1. Computational Fluid Dynamics (CFD) Simulations for Industry G. R. Shevare shevare@aero.iitb.ac.in www.aero.iitb.ac.in/~iitzeus Department of Aerospace Engineering Who are We? What is CFD Typical CFD Simulation – break up of cost CFD Simulation for Automobile

2. Who are We? Type of Organisation Structured group consisting of faculty / students / staff Present strength - 25 Being incubated by IIT as a company MissionConverting CFD to CAE Type of businessProducts : CFDTutor TM (available in the country and east Asia) CFDExpert TM (being launched by April 2004) Services:End to end CFD high fidelity solutions Training:Training of man power in executing CFD StrengthExcellent manpower at extremely attractive cost Excellent infrastructure from IIT ExpertiseTechnical skill:Building Cluster of PCs.. to paralleling Domain knowledge:Fluid Dynamics, CAD, CG, GRIDS, CFD,…. Typical ProjectsProducts for niche market in CFD Mission critical projects ( 2 to 20 person months) Technical Investigation Agencies / ClientsDefense agencies, C-DAC, ISRO, BARC, MNCs, TCS, …

3. CFD: What, Why and How? What is CFD Computational Fluid Dynamics or simply CFD is concerned with obtaining numerical solution to fluid flow, heat transfer, mass transfer, chemical reactions, and related phenomena problems using computers Why CFD CFD provides smart and efficient way to work with fluids / combustion in industry Efficient combustion in engine Efficient heat transfer in engine Estimation of lift and drag forces on vehicle Passenger comfort in cabin Use of CFD in industry requires Ample computing power Good CFD software Trained manpower – how to execute programs Expert with domain knowledge – what to expect

4. Model the problem Which additive behaves in what fashion? Domain expertise needed Typical CFD Simulation Calendar time spent in a 15 days CFD cycle Produce graphs, pictures & plots for the designer Special software required Fluid Mechanics equation are solved on millions of discrete points Special software and special skill required Millions of points at which solution is found is are required to be generated Special Software and Special skill required CAD geometry always requires repair Skill normally available

5. Surface and volume grids for IC Engine simulation Surface grids and boundaries of volume grids for complete automobile being simulated for aerodynamic loads CFD Simulation for Automobile - ongoing