A New Method for Calculating the Flow Field in a Dump Combustor.
Final rept. 15 May 83-15 Aug 84,
VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF MECHANICAL ENGINEERING
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A combined ellipticparabolic scheme was developed in which the elliptic code, STARPIC, was only used for the recirculation region of a dump combustor. Downstream of the recirculation region the parabolized form of the Navier-Stokes equation was used. The code written for this region used an architecture similar to that found in STARPIC. These programs were then combined producing what we call a hybrid code. Calculations were run in a dump combustor having an area ratio of approximately four. Comparisons were made of the radial profiles of velocity and turbulence kinetic energy with both the totally elliptic calculations and with experiment. In all cases the hybrid method agreed with the experiments at least as well as the elliptic calculations, and in most cases showed even better agreement. Results indicate that an order of magnitude savings in both computational time and machine storage can be achieved if the hybrid method is used. Author
- Computer Hardware
- Fluid Mechanics