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DAYANANOA SAGAR UNVERSiyY Question paper Course: 15ME423 - Computational Fluid Dynamics Event: B.Tech (70:30)- December 2018 DAYANANDA SAGAR UNIVERSITY USN No: VII Semester B. Tech Examinations - December 2018 / January 2019 Course Title: Computational Fluid Dynamics Course Code: 15ME423 Duration: 03 Hours Date: 31-12-2018 Time: 10:00 AM to 01:00 PM Max Marks: 70 Note: 1. Answer 5 full questions choosing one from each Section 2. Each Section carries 14 Marks 3. Formulae hand sheets are permitted 4. Missing Data may be suitably assumed SECTION -1 1a. What is CFD? List the applications of CFD. Briefly explain how a CED Code works. 1b. Explain the basis of classification of Partial Differential Equations. Classify (08 Marks) the following PDEs. (i) 2-D Poisson's Equation (ii) 2-D Laplace Equation (iii) 1-D Unsteady Conduction equation without heat generation (iv) 3-D Heat Diffusion equation (06 Marks) OR 2a. Write the Navier Stokes equation for fluid flow indicating various terms. (08 Marks) Reduce the same for: (i) 1-Dsteady incompressible flow (ji) Bernoullis equation 2.b. Derive the mass conservation equation in three dimensions. (06 Marks) SECTION - 2 3a. Develop Finite Difference Scheme for 1-D transient heat conduction equation. (04 Marks) 3b, A large uranium plate of thickness 10 em (k = 28 W/m-K, a = 125x106 m?/s) is initially at 100 C, Heat generation rate in the plate is § x 10 w/m’, At time t=0, the left and right sides of plate are subjected to convection with fluid at temperature 0° C and heat transfer co-efficient of 1500 W/m?-K. Using 2 divisions, determine the temperature distribution in the plate after 40 seconds. Show calculations of stability criterion for interior and boundary nodes. (10 Marks) Page 1 of 3 IONDVS 25-02-2019 114 sll d Scanned by CamScanner