Numerical simulation of reactive flow on the IBM ES/3090 Vector Multiprocessor

Prohibiting knock damage in internal combustion engines presents severe restrictions for engineers. Laboratory experiments are expensive or even impossible; nevertheless, numerical attempts that employ supercomputers have been rarely undertaken. The numerical approach described in this paper combines a recent shock-capturing finite-volume scheme for the compressible Navier Stokes equations, with semi-implicit treatment of the chemical source terms. An algorithm is described and validated by experiment that is optimaliy adapted to vector and parallel computersT. he algorithm has been implemented on the IBM Enterprise System/3090™ (ES/3090™) Vecto Multiprocessor. Performance measurements are discussed. The potential of the codeis illustrated by an example: formation of pseudos hock waves due to interaction of a shock wave with turbulent boundary layer flow.