GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (NEW) EXAMINATION - WINTER 2018
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Subject Code:2150104
Subject Name:Computational Fluid Dynamics
Date:20/11/2018
Time: 10:30 AM TO 01:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) Why Pressure-Velocity coupling is required? | 03 |
| (b) What is Staggered Grid? Why is it used? | 04 | |
| (c) Explain different types of inlet and outlet boundary conditions. | 07 | |
| Q.2 | (a) Explain 1st order Upwind scheme. | 03 |
| (b) State the advantages of SIMPLE-R algorithm. | 04 | |
| (c) Write a note on PISO algorithm. | 07 | |
| OR | ||
| (c) Write a short note on Flux Vector Splitting. | 07 | |
| Q.3 | (a) State the disadvantages of SIMPLE algorithm. | 03 |
| (b) What is TVD condition? | 04 | |
| (c) Explain finite volume method (FVM) for two dimensional diffusion problems. | 07 | |
| OR | ||
| (c) Explain 2nd order Upwind scheme. | 07 | |
| Q.4 | (a) State the advantages of PISO. | 03 |
| (b) Explain SIMPLE Algorithm. | 04 | |
| (c) Number of calculations involved in SIMPLE-R is more than SIMPLE. True or False? Why? | 07 | |
| OR | ||
| (a) What is TDMA? Why it is used? | 03 | |
| (b) Explain finite volume method (FVM) for steady one dimensional convection and diffusion problems. | 04 | |
| Q.5 | (a) What is the need of Upwind scheme? | 03 |
| (b) How does SIMPLE and SIMPLE-C differ? | 04 | |
| (c) Write a note on SIMPLE-R algorithm. | 07 | |
| OR | ||
| (a) What is No-slip boundary condition? Explain with example. | 03 | |
| (b) How step size is calculated for the flow over a flat plate? | 04 | |
| (c) Write a note on Beam and Warming Method. | 07 | |
| OR | ||
| (a) Explain Crank-Nicholson scheme. | 03 | |
| (b) Explain Tri Diagonal Matrix Algorithm (TDMA). | 04 | |
| (c) Explain FVM for One-Dimensional unsteady heat conduction problem | 07 | |
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