15
MHD HEAT AND MASS TRANSFER FLOW OF A REACTIVE, RADIATIVE AND ABSORBING FLUID THROUGH A VERTICAL POROUS PLATE G Nagesh 1* Prof R Sivaprasad 2 1 Research Scholar, Department of Mathematics, S K University, Ananthapuramu-515001, A.P., India 3 Professor, Department of Mathematics, Sri Krishnadevaraya University, Ananthapuramu-515003, A.P., India Email: g[email protected] & [email protected] Abstract: In this paper an attempt is made to the unsteady, two-dimensional, laminar, boundary-layer flow of a viscous, incompressible, electrically conducting and heat-absorbing fluid along a semi-infinite vertical permeable moving plate in the presence of a uniform transverse magnetic field, thermal radiation, radiation absorbing and first order chemical reaction. The plate is assumed to move with a constant velocity in the direction of fluidflow while the free stream velocity is assumed to follow the exponentially increasing small perturbation law. The governing equations of this problem are solved using perturbation technique and the solutions for velocity, temperature, concentration, skin friction coefficient, Nusselt number and Sherwood number are obtained. The effects of various thermo physical parameters such as Schmidt number, magnetic parameter, chemical reaction parameter, Grashof number, thermal Grashof number, Prandtl number, heat absorption and radiation absorption parameter over the velocity, temperature, concentration, skin friction coefficient, Nusselt number and Sherwood number are discussed through graphs and tables. Keywords: Radiation absorption, Chemical reaction, Heat source, Magneto hydrodynamic (MHD), porous medium, skin-friction. 1. INTRODUCTION The study of magneto hydrodynamics (MHD) plays an important role in agriculture, engineering and petroleum industries. MHD has won practical applications, for instance, it may be used to deal with problems such as cooling of nuclear reactors by liquid sodium and induction flow water which depends on the potential difference in the fluid direction perpendicular to the motion and goes to the magnetic field and also study of MHD of viscous conducting fluids is playing a significant role, owing to its practical interest and abundant applications, in astro-physical and geo-physical phenomenon. Astro-Physicists and geo-physicists realized the importance of MHD in stellar and planetary processes. The main impetus to the engineering approach to the electromagnetic fluid interaction studies has come from the concept of the magneto hydro dynamics, direct conversion generator, ion propulsion study of flow problems of electrically conducting fluid, particularly of ionized gases is currently receiving considerable interest. Such studies have made for years in convection with astro-physical and geo-physical problems such as Sun spot theory, motion of the interstellar gas etc. Recently, some engineering problems need the studies of the flow of an electrically conducting fluid, in ionized gas are called plasma. Many names have been used in referring to the study of plasma phenomena. MHD double diffusive and chemically reactive flow through porous medium bounded by two vertical plates was studied by Ravi Kumar et al. [1]. MHD free convective flow through a porous medium past a vertical plate with ramped wall temperature was studied by Sinha et al.[2]. Effect of heat transfer on MHD blood flow through an inclined stenosed porous artery with variable viscosity and heat source was discussed by Tripatihi et al. [3]. Steady MHD Mixed Convective flow in presence of inclined magnetic field and thermal radiation with effects of chemical reaction and Soret embedded in a porous medium was studied by Sharmilaa et al. [4]. Rama Krishna reddy [5] studied MHD free convective flow past a porous plate. Joule heating and thermal Compliance Engineering Journal Volume 11, Issue 1, 2020 ISSN NO: 0898-3577 Page No: 295

MHD HEAT AND MASS TRANSFER FLOW OF A REACTIVE, … · MHD HEAT AND MASS TRANSFER FLOW OF A REACTIVE, RADIATIVE AND ABSORBING FLUID THROUGH A VERTICAL POROUS PLATE G Nagesh1* Prof

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Page 1: MHD HEAT AND MASS TRANSFER FLOW OF A REACTIVE, … · MHD HEAT AND MASS TRANSFER FLOW OF A REACTIVE, RADIATIVE AND ABSORBING FLUID THROUGH A VERTICAL POROUS PLATE G Nagesh1* Prof

MHD HEAT AND MASS TRANSFER FLOW OF A

REACTIVE, RADIATIVE AND ABSORBING FLUID

THROUGH A VERTICAL POROUS PLATE

G Nagesh1* Prof R Sivaprasad2

1Research Scholar, Department of Mathematics, S K University, Ananthapuramu-515001, A.P., India

3Professor, Department of Mathematics, Sri Krishnadevaraya University, Ananthapuramu-515003,

A.P., India

Email: [email protected] & [email protected]

Abstract: In this paper an attempt is made to the unsteady, two-dimensional, laminar, boundary-layer flow

of a viscous, incompressible, electrically conducting and heat-absorbing fluid along a semi-infinite vertical permeable moving plate in the presence of a uniform transverse magnetic field, thermal radiation, radiation

absorbing and first order chemical reaction. The plate is assumed to move with a constant velocity in the direction of fluidflow while the free stream velocity is assumed to follow the exponentially increasing small perturbation law. The governing equations of this problem are solved using perturbation technique and the solutions for velocity, temperature, concentration, skin friction coefficient, Nusselt number and Sherwood number are obtained. The effects of various thermo physical parameters such as Schmidt number, magnetic parameter, chemical reaction parameter, Grashof number, thermal Grashof number, Prandtl number, heat absorption and radiation absorption parameter over the velocity, temperature, concentration, skin friction coefficient, Nusselt number and Sherwood number are discussed through graphs and tables.

Keywords: Radiation absorption, Chemical reaction, Heat source, Magneto hydrodynamic (MHD),

porous medium, skin-friction.

1. INTRODUCTION

The study of magneto hydrodynamics (MHD) plays an important role in

agriculture, engineering and petroleum industries. MHD has won practical applications, for instance, it may be used to deal with problems such as cooling of nuclear reactors by

liquid sodium and induction flow water which depends on the potential difference in the

fluid direction perpendicular to the motion and goes to the magnetic field and also study of MHD of viscous conducting fluids is playing a significant role, owing to its practical

interest and abundant applications, in astro-physical and geo-physical phenomenon.

Astro-Physicists and geo-physicists realized the importance of MHD in stellar and planetary processes. The main impetus to the engineering approach to the electromagnetic

fluid interaction studies has come from the concept of the magneto hydro dynamics, direct

conversion generator, ion propulsion study of flow problems of electrically conducting fluid, particularly of ionized gases is currently receiving considerable interest. Such

studies have made for years in convection with astro-physical and geo-physical problems

such as Sun spot theory, motion of the interstellar gas etc. Recently, some engineering problems need the studies of the flow of an electrically conducting fluid, in ionized gas

are called plasma. Many names have been used in referring to the study of plasma

phenomena.

MHD double diffusive and chemically reactive flow through porous medium

bounded by two vertical plates was studied by Ravi Kumar et al. [1]. MHD free

convective flow through a porous medium past a vertical plate with ramped wall temperature was studied by Sinha et al.[2]. Effect of heat transfer on MHD blood flow

through an inclined stenosed porous artery with variable viscosity and heat source was discussed by Tripatihi et al. [3]. Steady MHD Mixed Convective flow in presence of

inclined magnetic field and thermal radiation with effects of chemical reaction and Soret

embedded in a porous medium was studied by Sharmilaa et al. [4]. Rama Krishna reddy [5] studied MHD free convective flow past a porous plate. Joule heating and thermal

Compliance Engineering Journal

Volume 11, Issue 1, 2020

ISSN NO: 0898-3577

Page No: 295

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diffusion effect on MHD fluid flow past a vertical porous plate embedded in a porous

medium was studied by Obulesu et al, [6]. Free convection arises in the fluid when

temperature changes cause density variation leading to buoyancy force sacting on the fluid elements. The study of heat and mass transfer to chemical reacting MHD free

convection flow with radiation effects on a vertical plate has received a growing interest

during the last decades. Accurate knowledge of the overall convection heat transfer has vital importance in several fields such as thermal insulation, drying of porous solid

materials, heat exchanges, stream pipes, water heaters, refrigerators, electrical conductors

and industrial, geophysical and astrophysical applications, such as polymer reduction, manufacturing of ceramic, packed-bed catalytic reactors, food processing, cooling of

nuclear reactors, enhanced oil recovery, under ground energy transport, magnetized

plasma flow, high speed plasma wind, cosmic jets and stellar system. For some industrial applications such as glass production, furnace design, propulsion systems, plasma physics

and space craftre-entry aerothermodynamics which operate at higher temperatures and

radiation effect can also be significant.

Cheng and Minkowycz [7] have presented similarity solutions for free thermal convection

from a vertical plate in a fluid-saturated porous medium. The problem of combined

thermal convection from a semi-infinite vertical plate in the presence or absence of a porous medium has been studied by many authors. Nakayama and Koyama [8] have

studied pure, combined and forced convection in Darcian and non-Darcian porous media.

Lai and Kulacki [9] have investigated coupled heat and mass transfer by mixed convection from an isothermal vertical plate in a porous medium. Hsieh et al [10]has

presented non-similar solutions for combined convection in porous media. Chamkha [11]

has investigated hydro magnetic natural convection from aiso-thermal inclined surface adjacent to a thermally stratified porous medium. Hall current effects on MHD convective

flow past a porous plate with thermal radiation, chemical reaction and heat generation

/absorption was studied by Obulesu et al. [12]. Mohammed Ibrahim et al.[13]have investigated Heat source and chemical effects on

MHD convection flow embedded in a porous medium with Soret, viscous and Joules

dissipation. Chamkha et al [14] has presented MHD flow of uniformly stretched vertical permeable surface in the presence of heat generation / absorption and chemical reaction.

Chandra Reddy et al. [15] have presented MHD Natural Convective Heat

Generation/Absorbing and Radiating Fluid Past a Vertical Plate Embedded in Porous Medium – an Exact Solution. Chemical reaction on unsteady MHD convective heat and

mass transfer past a semi-infinite vertical permeable moving plate with heat absorption

was studied by Mythreye et al, [16]. Radiation absorption effect on MHD dissipative fluid past a vertical porous plate embedded in porous media was studied by Obulesu et al. [17].

Obulesu, Dastagiri and Siva prasad [18] have presented Radiation absorption and

chemical reaction effects on MHD radiative heat source/sink fluid past a vertical porous plate. Radiation absorption effect on MHD, free convection, chemically reacting

viscoelasticfluid past an oscillatory vertical porous plate in slip flow regime was studied

by Raju et al, [19]. Effect of Inclined Magnetic Field and Radiation Absorption on Mixed Convection Flow of a Chemically Reacting and Radiating Fluid Past a Semi Infinite

Porous Plate was studied by Obulesu et al. [20]. K Raghunath et al. [21] have studied

Heat and mass transfer on Unsteady MHD flow of a second grade fluid through porous medium between two vertical plates. Raghunath K et al. [22] Discussed Hall Effects on

MHD Convective Rotating Flow of Through a Porous Medium past Infinite Vertical

Plate. Raghunath k, et al. [23] have discussed Heat and mass transfer on MHD flow of Non-Newtonian fluid over an infinite vertical porous plate.

2. MATHEMATICAL FORMULATION

Consider unsteady two-dimensional flow of a laminar, incompressible, viscous,

electrically conducting and heat absorbing fluid past a semi-infinite vertical permeable

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moving plate embedded in a uniform porous medium and subjected to a uniform

transverse magnetic field in the presence of thermal and concentration buoyancy effects.

The governing equations for this investigation are based on the balances of mass, linear momentum, energy and concentration species. Taking into consideration the assumptions

made above, these equations can be written in Cartesian frame of reference, as follows

0*

*

y

v (1)

p

CTK

uu

BCCgBTTg

y

u

x

p

y

uV

t

u **)*()*(

*

*

*

*1

*

**

*

*2

0**

2

2

(2)

)*()*(*

*1

*

*

*

**

*

* *1*1

2

2

CC

C

RTT

C

Q

y

q

Cy

T

y

TV

t

T

pp

r

p

(3)

)*(*

*

*

**

*

* *

2

2

CCK

y

CD

y

CV

t

CC

(4)

Where x*, y*, and t* are the dimensional distances along and perpendicular to the plate and dimensional time, respectively. U* and V* are the components of dimensional

velocities along x* and y* directions, respectively, is the fluid density, is the

kinematic viscosity, CP is the specific heat at constant pressure, is the fluid electrical

Conductivity, B0 is the magnetic induction, K* is the permeability of the porous medium, T is the dimensional temperature,Q0 is the dimensional heat absorption coefficient, C is

the dimensional concentration, is the fluid thermal diffusivity, D is the mass

diffusivity, g is the gravitational acceleration, and βT and βC are the thermal and

concentration expansion coefficients, respectively. The magnetic and viscous dissipations

are neglected in this study. Under the above assumptions, the appropriate boundary conditions for the distributions of velocity, temperature and concentration are given by

0at)(*,)(*,*****

yeCCCCeTTTTuu tn

ww

tn

wwp

yCCTTeUuu tn as**),1(***

0 (5)

Where up*, Cw and Tw are the wall dimensional velocity, concentration and temperature,

respectively. Up*, C∞ and T∞ are the free stream dimensional velocity, concentration and temperature, respectively. U0and n* are constants.It is known from Eq.(1) that the

suction velocity at the plate surface is a function of time only and it is assumed in the

following form:

V* = - V0(1+ ɛAent) (6)

WhereA is a real positive constant, and A are small less than unity and V0 is a scale

of suction velocity which has non-zero positive constant. Outside the boundary layer, Eq. (2) gives

*

2

0**

**

*1

U

BU

Kdt

dU

x

p

p

(7)

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On introducing the following non-dimensional quantities,

2

0

0

2

0

2

2

0

2

00

***

2

00

**

2

0

2

0

**

*

**

*

0

*

0

*

0

00

*,

*,

*,,

)(,

)(,

,,Pr,*

,*

,,,*

,*

,*

v

vnn

Lvh

vtt

KvK

vU

CCgGc

vU

TTgGr

v

BM

DSc

K

C

CC

CCC

TT

TT

U

uU

U

UU

yvy

vU

uu

pwcwT

p

ww

p

p

)(

)(,,

4,

**2

0

**2

1

0

1

2

0

2

1

2

0

TTKv

CCRR

vC

QQ

Kv

IF

v

KKr

w

w

p

C

(8)

The governing equations (2) to (4) can be rewritten in the non-dimensional form as

follows

)()1(2

2

uUNCGcGry

u

dt

dU

y

uAe

t

u nt

(9)

RCFyy

Aet

nt

12

2

)1Pr(Pr (10)

ScKrCy

C

y

CAeSc

t

CSc nt

2

2

)1( (11)

QFFKMNwhere 1,/1

The corresponding boundary conditions are given by

yasCeUu

yateCeUu

nt

ntnt

p

0,0,1

0,1,1,

(12)

3. SOLUTION OF THE PROBLEM

The equations (9) to (11) are coupled, non-linear partial differential equations and these cannot be solved in closed form. However, these equations can be reduced to a set of

ordinary differential equations, which can be solved analytically. So this can be done,

when the amplitude of oscillations (ε <<1) is very small, we can assume the solutions of

flow velocity u, temperature field θ and concentration in the neighborhood of the plate

as:

)()(),(

)()(),(

)()(),(

10

10

10

yCeyCtyC

yeyty

yueyutyu

nt

nt

nt

(13)

Substituting equations (13) into equation (9)–(11) and equating the coefficients at the

terms with the same powers of ε, and neglecting the terms of higher order, the following

equations are obtained.

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Zero order terms:

00000 Gm - Gr - -N=uN - Cuu (14)

00100 R- =F-Pr C (15)

0=ScK 000 rCCScC (16)

First order terms:

110111 Gc - Gr -A - n)-(N n)u(N- Cuuu (17)

RC-PrA - = )Pr(Pr 101111 Fn (18)

0111 ScA)( CCnKrScCScC (19)

The corresponding boundary conditions are

yasCCuu

yatCCuUu p

0,0,0,0,1,1

01,1,1,1,0,

101010

101010

(20)

Solving equations (14) – (19) under the boundary conditions (20), the following solutions

are obtained

)exp( 10 ymC (21)

)exp()exp( 22110 ymbymb (22)

)exp()exp()exp(1 3524130 ymbymbymbu (23)

)exp()exp( 47161 ymbymbC (24)

)exp(

)exp()exp()exp(

511

41029181

ymb

ymbymbymb

(25)

)exp()exp()exp(

)exp()exp()exp(1

617516415

3142131121

ymbymbymb

ymbymbymbu

(26)

Substituting equations (21)–(26) in equation (13) we obtain the velocity temperature and concentration field

))exp()exp()exp(

)exp()exp()exp(1(

))exp()exp()exp(1(

617516415

314213112

352413

ymbymbymb

ymbymbymbe

ymbymbymbu

nt

(27)

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))exp(

)exp()exp()exp((

)exp()exp(

511

4102918

2211

ymb

ymbymbymbe

ymbymb

nt

(28)

))exp()exp(()exp( 47161 ymbymbeymC nt (29)

Skin Friction:

The non-dimensional skin friction at the surface is given by

0

yy

u

ntebmbmbmbmbmbm

bmbmbm

)(

)(

176165154143132121

534231

(30)

NusseltNumber :

The rate of heat transfer in terms of the Nusselt number is given by

ntebmbmbmbmbmbmNu )()( 11510492812211 (31)

Sherwood Number :

The rate of mass transfer on the wall in terms of Sherwood number is given by

0

yy

CSh

ntebmbmmSh )( 74611 (32)

4. RESULTS AND DISCUSSION

In order to get a physical insight into the problem numerical calculations are carried out

for the velocityu, the temperatureT and concentration C,in terms of the parameters Magnetic field parameter (M),Permeability parameter (K), Grash of number (Gr),

modified Grash of number (Gc), Schmidt number (Sc), Prandtl number (Pr), Heat

absorption parameter (Q), Chemical reaction parameter (Kr), Radiation parameter (F) and Radiation absorbtion parameter respectively. Throughout the computations we employ the

Prandtl number Pr= 0.71, Grashofnumber G r= 3, modified Grashof number Gc= 1,

Schmidt number SC=0.22, Magnetic field parameter M=2, Radiation parameter F=0.5, Heat absorption parameter Q=1, Chemical reaction parameter Kr=1, Permeability

Parameter K= 1, Radiation absorbtion parameter R=2, the frequency of oscillations n

=0.1, scale of free stream velocity Up = 0.5, t=1,ε = 0.2, and A=0.5.

0

yy

Nu

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4.1. Velocity Profiles

Figures 1 to 4 display the effects of a magnetic field parameter (M), permeability

parameter (K), Grashofnumber (Gr) and modified Grashofnumber (Gc) on velocity distributions respectively. From Figure 1, it is observed that an increase of magnetic field

parameter leads to decrease in velocity fields. It is because that the application of

transverse magnetic field will result a resistive type force (Lorentz force) similar to drag force which tends to resist the fluid flow and thus reducing its velocity. In Figure 2, we

represent the velocity profiles for different values of permeability parameter (K). The

flow field sufferan increase in the velocity at all points in the presence of permeability parameter(K). In Figures 3 and 4, velocity profiles are displayed with the variation in

Grashof number(Gr) and modified Grashof number (Gc). From these figures are noticed

the velocity gets increase by the increase of Grashof number(G) and modified Grashof number (Gc).

Figure 1: Effect of Magnetic Parameter on Velocity

Figure 2: Effect of Permeability Parameter on Velocity

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Figure 3: Effect of Grashof Number on Velocity

Figure 4: Effect of Modified Grashof Number on Velocity

4.2. Temperature Profiles

Figures 5 to 8 show the effects of material parameters such as Pr, F, R and Q on

temperature distribution. The effect of Prandtl number is very important in temperature

profiles. There is a decrease in temperatures due to increasing values of the Prandtl number (Pr) as shown in Figure 5. From Figure 6, it is clear that temperature decreases

with the increase in radiation parameter (F). In Figure7, the effect of heat absorption

parameter (Q) is shown on temperature profile. From this figure it is observed that temperature decreases with an increase in Q. In Figure 8, the effect of radiation

absorption parameter (R) is shown on temperature profile. From this figure it is observed

that temperature decreases with an increase in R.

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Figure 5: Effect of Prandtl Number on Temperature

Figure 6: Effect of Radiation Parameter on Temperature

Figure 7: Effect of Heat absorption Parameter on Temperature

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Figure 8: Effect of Radiation absorption Parameter on Temperature

4.3. ConcentrationProfiles

Figures (25) and (26) show the effect of Schmidt number (Sc) and chemical reaction parameter (Kr) on concentration profile. From Fig25-26, it is clear that concentration

decreases with the increase in Schmidt number and chemical reaction parameter.

Figure 9: Effect of Schmidt Number on Concentration

Figure 10: Effect of Chemical reaction Parameter on Concentration

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Table – 1, shows numerical values of skin-friction for various of Grashof number (Gr),

modified Grashof number (Gc), Magnetic parameter (M), Porosity parameter (K). From table 1, we observe that the skin-friction increases with an increase in Grashof number

(Gr), modified Grashof number (Gc) and Porosity parameter (K)where as it decreases

under the influence of magnetic parameter.

Skin Friction (τ)

Gr Gc M K τ

3 4.2394

5 5.5383

8 7.4867

10 8.7856

2 4.8288

4 6.0078

6 7.1868

8 8.3658

2 4.2394

2.4 4.1858

2.8 4.1467

3 4.1315

0.5 4.1315

1 4.2394

1.5 4.986

2 4.3346

Table – 2 demonstrates the numerical values of Nusselt number (Nu) for different values

of Prandtl number (Pr), Radiation parameter (F), Heat absorption parameter (Q) and Radiation absorption parameter (R). From table 2, we notice that the Nusselt number

increases with an increase in Prandtl number, Radiation parameter and Heat source

parameter where as it decreases under the influence of Radiation absorption parameter.

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Nusselt Number (Nu)

Pr F R Q Nu

0.11 0.3278

0.31 0.4098

0.51 0.5032

0.71 0.6080

1 0.9682

2 1.5272

3 1.9664

4 2.3359

1 1.3271

1.5 0.9675

2 0.6080

2.5 0.2484

0.5 0.1451

0.8 0.4389

1 0.6080

1.2 0.7613

Table – 3 shows numerical values of Sherwood number (Sh) for the distinction values of

Schmidt number (Sc) and Chemical reaction parameter (Kr). It can be noticed from Table - 3 that the Sherwood number enhances with rising values of Schmidt number and the

Chemical reaction parameter.

Sherwood Number (Sh)

Sc Kr Sh

0.2 0.9200

0.5 1.6031

0.9 2.3491

1 0.7421

1.2 0.7949

1.4 0.8436

2 0.9727

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5. CONCLUSIONS

In this problem, is studied the MHD heat and mass transfer flow of a reactive, radiative

and absorbing fluid through a vertical porous plate. In the analysis of the flow the

following conclusions are made:

1. Velocity increases with an increase in Grashof number and as well as modified

Grashof number and Porosityparameter of the porous medium while, it decreases

in the existence of magnetic parameter. 2. Temperature decreases with an increase in Prandtl number, radiation parameter,

heat absorption parameter and increases with an increase in radiation absorption

parameter(R). 3. Concentration decreases with an increase in Schmidt number, chemical reaction

parameter.

4. As significant increase in seen in skin friction for Grashof number, modified Grashof number and porosityparameter while a decrease is seen in the presence of

magnetic parameter.

5. The rate of heat transfer increases with an increase Prandtl number, heat absorption parameter, radiation parameterand decreases with a radiation

absorption parameter.

6. The rate of mass transfer increases with an increase Schmidt number and Chemical reaction parameter.

APPENDIX

KMN

1 QFF 1

2

42

1

KrScScScm

2

4PrPr 1

2

2

Fm

2

4113

Nm

2

)(42

4

nKrScScScm

2

Pr)(4PrPr 1

2

5

nFm

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Compliance Engineering Journal

Volume 11, Issue 1, 2020

ISSN NO: 0898-3577

Page No: 307

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[13]. Mohammed Ibrahim S, and Suneetha K; "Heat source and chemical effects on MHD convection flow embedded in a porous medium with Soret, viscous and

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[14]. Chamkha A.J.: MHD flow of uniformly stretched vertical permeable surface in

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[15]. Chandra Reddy P, Raju M.C,Raju G.S.S: MHD Natural Convective Heat

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Porous Medium – an Exact Solution , Journal of the Serbian Society for Computational Mechanics / Vol. 12 / No. 2, 2018.

[16]. Mythreye A , Pramod J.P , Balamurugan K.S; Chemical reaction on unsteady MHD convective heat and mass transfer past a semi-infinite vertical permeable

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[17]. Obulesu M, Siva Prasad R; Radiation Absorption Effect on MHD Dissipative

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[18]. Obulesu M, Dastagiri Y, Siva Prasad R;Radiation absorption and chemical

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[19]. Raju M.C., Vidyasagar B., Varma S.V.K., Venakataramana S.: Radiation

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[20]. Obulesu M, Siva Prasad R;,Effect of Inclined Magnetic Field and Radiation Absorption on Mixed Convection Flow of a Chemically Reacting and Radiating

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[21]. K Raghunath, R Sivaprasad, GSS Raju, Heat and mass transfer on Unsteady

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