Simple MATLAB program

8/10/2019 Simple MATLAB program

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SKAA 3413

COMPUTER PROGRAMMING

GROUP PROJECT

RECTANGULAR CHANNEL CONSTRICTION

STUDENT/

MATRIC NO.

MOHD AZLAN BIN AMIR NORDIN

SX130554KAWS04

MOHD HASNAN BIN HASSAN

SX130580KAWS04

MOHD ZAMY SHAM BIN MOHD ZIN

SX130577KAWS04

MUHAMMAD ASYRAF BIN MASRISX130588KAWS04

NOORSHAFIY BIN AZMEY

SX130600KAWS04

SESI - SEM 2014/2015 1

SECTION 03

LECTURER DR. PONSELVI JEEVARAGAGAM


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ii

TABLE OF CONTENTS

CHAPTER TITLE PAGE

1

INTRODUCTION 1

1.1 Background of Problem 1

1.2 Objectives of Program 2

1.3 Benefits of Program 2

2

PROGRAM ALGORITHM 3

2.1 Analysis Method 3

2.2 Pseudo Code 4

2.3 Flow Chart 5

3

PROGRAM STRUCTURE 7

3.1 GUI Setting 7

3.2 Script 8

4 TEST PLAN 11

4.1 Input Validation 11

4.2

Test 1 - Wier 12

4.3 Test 2 - Constriction 14

4.4 Test 3 - Weir & Constriction 15

5

REFERENCES 16

APPENDICES

Appendix 1 - Work Program

Appendix 2 - Test Plan Calculation


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1.1 Background

The water wil

the flow. The possi

constriction or both.

Weir is a str

invert level while co

modify the hydraulic

CHAPTER 1

1

INTRODUCTION

of Problem

l flow uniformly in an open channel if there

le obstruction for the flow is either bro

cture that is placed at the channel invert th

striction is the reduction of the channel wid

profile and energy line of the flow.

Figure 1.1 Channel constriction.

is no obstruction to

d crested weir or

at will increase the

th. Obstruction will


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1.2

Objectives o

The program

trough the obstructio

1. State

2. Heigh

3. Width

The objective

1. To de

obstru

2. To ill

3. To wr

1.3

Benefits of P

The benefits

1. Quick

downs

2.

Quick3. User f

Figure 1.2 Broad crested weir.

Program

will analyse the flow of water in a rectan

. The hydraulic profile of the flow will depe

f flow before the obstruction (subcritical/su

t of weir, h.

of constriction,B2.

s of the program are:

ermine the water depth at the obstruction (

ction (y1) and downstream of the obstruction

strate the hydraulic profile of the flow.

te the output to text file Result.txt.

ogram

f the program are:

ly calculate values of E, y, and yc from u

tream section.

ly plot the elevation of hydraulic profile of thriendly by application of GUI.

2

ular open channel

nds on:

ercritical).

2), upstream of the

(y3).

pstream section to

e flow.


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CHAPTER 2

2

PROGRAM ALGORITHM

2.1 Analysis Method

The program is using the concept of specific energy as a method of analysis

as shown in equation below:

2

22

qE y

gy= +

The values of Eare equal from upstream to downstream of control structure

and must satisfy theEminfor each section. IfE0>Emin2+ h, the value ofE1andE2are

equal to the value ofE0and value ofy1andy3are equal with value of y0. The value

ofE2=E0 handy2to be calculated from equation below:

2

2

2 02

22

q

y E hgy+ =

IfE0


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4

2.2 Pseudo Code

The algorithm of the program is listed below:

1. User input Q , 0y , B, 2B and h

2. Validate input until Q , 0y , B, 2 0B > , 2B B< and 0h

3. q Q B= , 23cy q g= , min 1.5 cE y=

4. 2 2q Q B= ,23

2 2cy q g= , min2 21.5 cE y=

5.2

0 0

02

qE y

gy

= +

6. If 0 min2E E h> +

a. 1 3 0E E E= =

b. 1 3 0y y y= =

c. 2 0E E h=

d. Determine 2y by solving equation3 2 2

2 2 2 22 2 0gy gE y q + = where

2 2 0cy y y< < if 0 2cy y> or 0 2 2cy y y< < if 0 2cy y<

7. If 0 min2E E h< +

a. 2 min2E E=

b. 2 2cy y=

c. 1 3 min2E E E h= = +

d. Solving equation 3 2 212 2 0gy gE y q + = to determine 1y and 3y

where 1 0y y> and 3 cy y<

8. Plot graph to display E, y , and cy for section 0 to section 3

9. Write output Result.txt as format below

Location E(m) y(m) yc(m)

--------------------------------------------------

(0)Normal E0 y0 yc0

(1)Upstream E1 y1 yc1

(2)Structure E2 y2 yc2

(3)Downstream E3 y3 yc3


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5

2.3 Flow Chart

Main Program (PRJ_Main.m)

Input

0 2, , , ,Q y B B h

Start

q Q B= ,23

cy q g= , min1.5

cE y=

2 2q Q B=

, 232 2cy q g= ,

min 2 21.5 cE y=

2

0 002

q

E y gy= +

2

0 2, , , 0

0

B B

Q y B B

h

>

0 min2E E h> +

0 1 2 3

0 1 2 3

0 1 2 3

, , ,

, , ,

, , ,c c c c

E E E E

y y y y

y y y y

Plot hydraulic profile

Write Result.txt

End

UDF_ControlUDF_Uncontrol

Yes

No

Yes No


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6

UDF_Uncontrol.m:

UDF_Control.m:

1 3 0

1 3 0

E E Ey y y

= =

= =

2 0

3 2 2

2 2 2 2Solve 2 2 0

E E h

gy gE y q

=

+ =

2 min2

2 2c

E E

y y

=

=

1 3 min 2

3 2 2

1

1 0

3

Solve 2 2 0

c

E E E h

gy gE y q

y y

y y

= = +

+ =

>

2 2 0cy y y< 0

text(4.5,h,sprintf('h=%.2fm',h),'HorizontalAlignment',...'c','VerticalAlignment','bottom')

end,hold off

%Display resultaxes(handles.FigAns),cla reset,axis off,hold onxlim([0 7])text(0.5,0,sprintf('E_{0}=%.3fm\ny_{0}=%.3fm\ny_{c}=%.3fm' ,...

Out(1).E,Out(1).y,Out(1).yc),'HorizontalAlignment','c',...'VerticalAlignment','bottom')

text(2.5,0,sprintf('E_{1}=%.3fm\ny_{1}=%.3fm\ny_{c}=%.3fm' ,...Out(2).E,Out(2).y,Out(2).yc),'HorizontalAlignment','c',...'VerticalAlignment','bottom')

text(4.5,0,sprintf('E_{2}=%.3fm\ny_{2}=%.3fm\ny_{c2}=%.3fm' ,...Out(3).E,Out(3).y,Out(3).yc),'HorizontalAlignment','c',...'VerticalAlignment','bottom')

text(6.5,0,sprintf('E_{3}=%.3fm\ny_{3}=%.3fm\ny_{c}=%.3fm' ,...

Out(4).E,Out(4).y,Out(4).yc),'HorizontalAlignment','c',...'VerticalAlignment','bottom'),hold off

%Write resultfid=fopen('Results.txt','w');fprintf(fid,'%s%.3fm\n%s%.3fm\n%s%.3fm\n%s%.3fm\n%s%.3fm\n' ,...

'Q = ',Inp.Q,'y0 = ',Inp.y0,'B = ',Inp.B,'B2 = ',...Inp.B2,'h = ',Inp.h)

fprintf(fid,'\n Location E(m) y(m) yc(m)\n')fprintf(fid,'---------------------------------------------\n' )fori=1:4

fprintf(fid,' %s%10.3f%10.3f%10.3f\n',Out(i).Loc,...Out(i).E,Out(i).y,Out(i).yc)

endfclose(fid)end


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10

btnCLEAR script

% --- Executes on button press in btnCLEAR.functionbtnCLEAR_Callback(hObject, eventdata, handles)% hObject handle to btnCLEAR (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)set(handles.txtQ,'string','')set(handles.txty0,'string','')set(handles.txtB,'string','')set(handles.txtB2,'string','')set(handles.txth,'string','')set(handles.txtVal,'string','')axes(handles.FigGraph)cla resetset(handles.FigGraph,'Visible','off')axes(handles.FigAns)cla resetset(handles.FigAns,'Visible','off')

btnEND script

% --- Executes on button press in btnEND.functionbtnEND_Callback(hObject, eventdata, handles)% hObject handle to btnEND (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)delete(handles.PRJ_Main)


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CHAPTER 4

4

TEST PLAN

Testing for this program was made using exercise from Hydraulics Lecture

Notes by Mr. Amat Sairin Demun.

4.1 Input Validation

The program requires all inputs are positive number. A notification will

appear if any of the input is not a positive number as shown below.


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The program

B. If the value ofB2i

4.2 Test 1 - Wier

2 3AR S

Qn

=

5 3

2 3

A Qn

P S= =

( )( )

5 3

02 3

02By

B y+

also requires the value ofB2is less than or e

s greater thanBa notification will appear as

5 3

2 3

A S

P n=

9.8 0.0155.197

0.0008

=

( )( )

5 3

002 3

0

2.6 5.197 2.2702.6 2

y y my

= =

+

12

qual to the value of

hown below.


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13

Location E(m) y(m) yc(m)--------------------------------------------- (0)Normal 2.411 2.270 1.131(1)Upstream 2.411 2.270 1.131(2)Structure 1.911 1.642 1.131(3)Downstream 2.411 2.270 1.131

Location E(m) y(m) yc(m)--------------------------------------------- (0)Normal 2.411 2.270 1.131(1)Upstream 2.617 2.501 1.131

(2)Structure 1.697 1.131 1.131(3)Downstream 2.617 0.599 1.131


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4.3 Test 2 - Cons

( )

( )

5 3

0

2 3

0

2.6

2.6 2

y

y+

triction

0

9.8 0.0161.109 0.715

0.02y m

= = =

14


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4.4 Test 3 - Weir

Location

-----------------

(0)Normal

(1)Upstream

(2)Structure

(3)Downstream

& Constriction

E(m) y(m) yc(m)----------------------------

2.715 0.450 0.9728.794 8.788 0.9723.794 2.529 2.5298.794 0.231 0.972

15


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5

REFERENCES

Amat Sairin Demun (2010).Hydraulics Lecture Notes. (3rd Edition). Skudai: UTM.

Mohamad Hidayat Jamal (2014). Lecture Module for SKAA 2513 Hydraulics.

Unpublished, UTM.

Ponselvi Jeevaragagam (2014). Lecture Module for SKAA 3413 Computer

Programming. Unpublished, UTM.


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APPENDIX 1

Work Program


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PROGRAM FOR RECTANGULAR CHANNEL CONSTRICTION

Work Program

No. Works Description Action by

November December January

Week

10

Week

11

Week

12

Week

13

Week

14

Week

15

Week

16

Week

17

Week

18

1Choosing the problem:Weir & constriction

Everyone

2Plan the program, pseudocode, flowchart, algorithm

Shafiy/Hasnan

3 Draft the program, GUI Hasnan/Zamy

4 Develop the program, script Asyraf/Azlan

5 Test the program Everyone

6Prepare the report, compile

the programZamy/Shafiy

7 Submission


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APPENDIX 2

Test Plan Calculation


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Documents

Simple MATLAB program