BODY CAPTURING IN IMPACTING SUPERSONIC FLOWS

A mathematical model of sonic and supersonic flows, validated previous ly for the prediction of free jets and jets which impinge a flat surfa ce orthogonally, is used to simulate the near field structure of super sonic flows which impact a number of cones. Representation of the impa cted surfaces, which are misaligned with the finite-volume grid employ ed, is by means of a body capturing technique based on the use of hier archical, adaptive Cartesian grids. The accuracy of the model and the body capturing approach is assessed by comparing predictions with expe rimental data on impinging supersonic flows available in the literatur e. For the axisymmetric situations considered, results derived from th e model are found to be inclose agreement with data on the location of both Gee and attached shocks formed in the vicinity of the impacted o bjects, with the model also providing good estimates of pressures occu rring on the surface of the cones. (C) 1998 BG pie. Published by Elsev ier Science Inc. All rights reserved.