All rights reserved © 2007 - Combustion Research and Flow Technology, Inc. (CRAFT Tech®).

Commercial Technology Overview:

• Automobile Cylinder Solutions

CRAFT Tech had developed a multi-zone technique for CFD simulation of in-cylinder flowfields. The simulation technique is based on development of a multi-zone grid with sliding interfaces with an automated procedure for removal/addition of cell layers to account for piston/valve motion. These specific capabilities are unique to in-cylinder flowfield simulation requirements and were implemented in a specialized version of the unstructured CRUNCH CFD code, developed by CRAFT Tech.

IC Engine Simulation
Mach Number Contours and Particle Flow Traces
Intake Cycle

Exhaust Cycle

  1. Sinha, N., Cavallo, P., Hosangadi, A., Lee, R.A., Affes, H., and Chu, D., “Efficient CFD Simulations For In-Cylinder Flows Using Hybrid Grids,” SAE Paper No. 1999-01-1184, 1999 SAE Int’l Congress and Exhibition, Cobo Center, Detroit, MI, March 1–4, 1999.
  2. Sinha, N., Cavallo, P.A., Lee, R.A., Hosangadi, A., Kenzakowski, D.C., Dash, S.M., Affes, H., and Chu, D., "Novel CFD Techniques for In-Cylinder Flows On Tetrahedral Grids," SAE Paper No. 980138, 1998 SAE Int'l Congress and Exposition, Detroit, MI, February 23-26, 1998.
  3. Sinha, N., Hosangadi, A., Lee, R.A., York, B.J., Cavallo, P.A., and Dash, S.M. "Applications of Upwind Combustive/Multiphase Numerics to Automotive In-cylinder and Fuel-Fill Flowfields," Paper No. FEDSM97-3027, 1997 ASME Fluids Engineering Division Summer Meeting, Vancouver, British Columbia, Canada, June 1997.