Download GTU BE/B.Tech 2019 Summer 5th Sem New 2150104 Computational Fluid Dynamics Ii Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (NEW) EXAMINATION - SUMMER 2019

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. What are the various boundary conditions? (03)
2. Explain (1) Symmetry & (2) Periodic boundary conditions. (04)

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3. Explain steps involved in solving finite volume method for one dimensional steady state diffusion problem. (07)

Q.2

1. What is the full form of SIMPLE, SIMPLE-R & PISO? (03)
2. Explain Staggered Grid. (04)
3. Explain SIMPLE algorithm in detail. (07)

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OR

1. Compare SIMPLE, SIMPLE-R and SIMPLE-C. (07)

Q.3

1. Why pressure velocity coupling is required in the solution of Incompressible flow problems. (03)
2. What is TDMA? Explain in detail. (04)

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3. Explain PISO algorithm in detail. (07)

OR

1. Why under-relaxation is required in SIMPLE? (03)
2. State the need of Upwind scheme-over the central difference scheme. (04)
3. Write a note on Beam and Warming method. (07)

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Q.4

1. Draw 2D grid used for discretization problem and also write general discretized equation for interior nodes. (03)
2. Solve FVM for steady one dimensional convection and diffusion problem. (04)
3. What are the general properties of discretization schemes? (07)

OR

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1. How Finite Volume Method Works? Explain in brief. (03)
2. Explain-Crank-Nicolson Scheme for the FVM for unsteady heat conduction problem (04)
3. Explain how central differencing schemes works? (07)

Q.5

1. Explain supersonic viscid flow over the flat plate. (03)

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2. Explain different boundary conditions for supersonic viscid flow over the flat plate. (04)
3. Explain flow chart for Mac-Cormark subroutine. (07)

OR

1. How multidimensionality does make the solution more difficult? (03)
2. Explain 2^nd order upwind schemes. (04)

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3. Write a note on High Resolution schemes. (07)

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