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16/04/2013 1 Prof. Murali Kantharaj Department of Ocean Engineering, Indian Institute of Technology - Madras Chennai, INDIA; e-mail:[email protected] Outfall case studies & Modelling Outfall Case Studies & Modelling Water requirement Sea Water requirement for once through cooling system – 1,80,000 m 3 /hr. Temperaturedifferential upto7deg. No appreciable change in salinity Prof. Murali Kantharaj Department of Ocean Engineering, Indian Institute of Technology - Madras Chennai, INDIA; e-mail:[email protected] Outfall case studies & Modelling 2 Prof. Murali Kantharaj Department of Ocean Engineering, Indian Institute of Technology - Madras Chennai, INDIA; e-mail:[email protected] Outfall case studies & Modelling 3 Prof. Murali Kantharaj Department of Ocean Engineering, Indian Institute of Technology - Madras Chennai, INDIA; e-mail:[email protected] Outfall case studies & Modelling 4 4

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Page 1: OutfallCase&Modelling

16/04/2013

1

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Outfall Case Studies & Modelling

Water requirement

� Sea Water requirement for once through cooling system –

1,80,000 m3/hr.

� Temperature differential up to 7 deg.

� No appreciable change in salinity

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

2

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

3Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

44

Page 2: OutfallCase&Modelling

16/04/2013

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Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

5Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Layout Plan With Marine Facilities

6

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

7Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Page 3: OutfallCase&Modelling

16/04/2013

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Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Table 1. Summary Of Dilution Characteristics For Various Current Values.

10

Velocity

configuration

Distance to

initial dilution (m)

Initial Dilution

0.1m/s ~35 Within 50m

0.3m/s ~30 Within 45m

0.5m/s ~25 Within 45m

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Current

(0.1m/s)

direction

offshore

Fig.3 Details of model domain for 8 diffuser flow and dispersion model

Page 4: OutfallCase&Modelling

16/04/2013

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Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Modelling Pipelines and Multiport Diffusers

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Qdiff (m3/s)

LastDiffuser

FirstDiffuser

0

0.5

1

1.5

2

2.5

3

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Vdiff (m/s)

LastDiffuser

FirstDiffuser

6 pipe with 16 ports per pipe

0.47

0.48

0.49

0.5

0.51

0.52

0.53

0.54

0.55

0.56

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Ddiff (m)

LastDiffuser

First Diffuser

Page 5: OutfallCase&Modelling

16/04/2013

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Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Vpipe (m/s)

LastDiffuser

First Diffuser

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Dpipe (m)

LastDiffuser

First Diffuser

6 pipe with 16 ports per pipe

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

Modelling Cumulative Effects

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

UNDER CONSTRUCTION OF INTAKE HEAD

CFD Modelling of – Forebay and Sump

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

UNDER CONSTRUCTION OF INTAKE HEAD

CFD Modelling of – Forebay and Sump

Page 6: OutfallCase&Modelling

16/04/2013

6

Prof. Murali KantharajDepartment of Ocean Engineering, Indian Institute of Technology - MadrasChennai, INDIA; e-mail:[email protected]

Outfall case studies & Modelling

UNDER CONSTRUCTION OF INTAKE HEAD

CFD Modelling of – Forebay and Sump