GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (OLD) EXAMINATION - WINTER 2017
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Subject Code: 160105 Date: 08-11-2017
Subject Name: Computational Fluid Dynamics-I1
Time: 02:30 pm to 05:00 pm Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) What is CFD? State its application in various fields. [07]
(b) State the disadvantage of Central difference scheme and explain 1st order upwind scheme. [07]
Q.2 (a) What is Grid transformation? Explain with an example of airfoil. [07]
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(b) Write a note on Multidimensional Problem. [07]OR
(b) What is the need of Linearization? Explain the Beam and Warming Method. [07]
Q.3 (a) Derive the flux terms of governing equations for Numerical Solution of Prandtl-Mayer expansion flow field. [07]
(b) Discuss the calculation of step size in space and time for flow over flat plate. [07]
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OR
Q.3 (a) Explain purely subsonic flow through the CD nozzle. Also explain the boundary conditions for the same. [07]
(b) Explain TVD and flux limiters in brief [07]
Q.4 (a) Explain the MacCormack subroutine for a flat plate [07]
(b) Write a short note on High Resolution Schemes. [07]
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OR
Q.4 (a) Write a note on Shock tube problem. [07]
(b) Write a short note on Stretched Grids with example. [07]
Q.5 (a) Write a short note on Boundary Fitted Coordinate systems with example. [07]
(b) Transform the governing equations of Prandtl-Mayer expansion flow field from (x,y) coordinate system to (§,1) coordinate system [07]
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OR
Q.5 (a) Discuss the initial and boundary conditions for two dimensional unsteady, supersonic, viscous flow over the flat plate. [07]
(b) Write a short note on The Godunov Approach with the help of the shock tube problem. [07]
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