Perform a steady-state CFD simulation on shapes and calculate value of 퐶푑. Shape used:  Square Shape  Triangle Shape  Vertical Plate

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Assignment No. 6
steady state CFD simulation
on basic shapes
14.04.2021
Shivam Choubey
Student No: CFDB30321004

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Objective
• Perform a steady state CFD simulation on shapes and calculate
value of 𝐶𝑑.
Shape used:
 Square Shape
 Triangle Shape
 Vertical Plate

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Problem Statement :1
• Inlet velocity is 80 m/s.
• Pressure outlet
• Calculate Cd value.
Inlet Outlet
Image 1

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CFD Setting
Mesh Setting:
Number of Nodes :79080
Number of Elements :78400
total volume (m3): 1.960000e-02
Aspect Ratio = 1.45401e+00
Orthogonal Quality = 9.98924e-01
Solver Setting
• Model used : K-w ssh model
• Working fluid :air
• Solver : Coupled
• Residual : 1e-8
Image 2
Image 3

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Results
The reference value is taken from the
Fluid mechanic's Book by Frank White.
All value is taking at Re >=10^4.
Table 1 Value
Reference Value of Cd 2.1
Simulation Value 2.4124
Error
E=(2.4124-2.1/2.1)*100
=14%
Image 4
Image 5

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Problem Statement:2
• Inlet velocity is 80 m/s.
• Pressure outlet
• Calculate Cd value.
Inlet Outlet
Image 6

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CFD Setting
Mesh Setting:
Number of Nodes :31390
Number of Elements :30985
total volume (m3):1.982679e-02
Aspect Ratio = 3.11816e+00
Orthogonal Quality = 7.43891e-01
Solver Setting
• Model used : K-w ssh model
• Working fluid :air
• Solver : Coupled
• Residual : 1e-8
Image 7
Image 8

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Results
The reference value is taken from the
Fluid mechanic's Book by Frank White.
All value is taking at Re >=10^4.
Table 2 Value
Reference Value of Cd 2.0
Simulation Value 2.5124
Error
E=(2.5124-2.0/2.0)*100
=25%
Image 9
Image 5

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Problem Statement:3
• Inlet velocity is 80 m/s.
• Pressure outlet
• Calculate Cd value.
Inlet Outlet
Image 10

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CFD Setting
Mesh Setting:
Number of Nodes : 31617
Number of Elements : 31217
total volume (m3):1.982679e-02
Aspect Ratio = 3.11816e+00
Orthogonal Quality = 7.43891e-01
Solver Setting
• Model used : K-w ssh model
• Working fluid :air
• Solver : Coupled
• Residual : 1e-8
Image 11
Image 12

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Results
The reference value is taken from the
Fluid mechanic's Book by Frank White.
All value is taking at Re >=10^4.
Table 3 Value
Reference Value of Cd 2.0
Simulation Value 2.6124
Error
E=(2.6124-2.0/2.0)*100
=30%
Image 13
Image 5