Shock-Turbulence Interaction: Annotated Reference

This is the first of several, informal technical memos in which I will attempt both a ''memory dump'' and an update on past and present research on shock wave-turbulence interaction. Despite decades of attention, questions remain about wily, how, and to what degree shock interaction with V-existing turbulence amplifies the turbulence, extends its active range and, consequently, has the potential to significantly increase the average level of turbulent component mixing. (As used here, pre-existing turbulence is defined as an initial state of fluid. dynamic turbulence which has been produced independently and prior to encountering the shock wave). However, much as in the underlying, unresolved problem of fluid dynamic turbulence, a general solution is not sought (even if such an unlikely goal could be considered attainable in a professional lifetime). Instead, our more limited (but achievable) goal is to elevate our understanding of the phenomena by combining scaleable experiments, appropriately sensitive diagnostic techniques, approximating model developments, and analysis. We also hope to attain a reasonable level of confidence in our ability to estimate the influence of the phenomena when subjected to a range of thermo-physical states and flow conditions of programmatic interest. Additionally, this review should help establish a carefully evaluated data base for baseline checks, validation, and refinement of numerical simulation procedures. These tested and experimentally verified procedures may then be applied with some confidence to simulate and predict shock enhanced turbulent mixing incorporating the necessarily full range of driving influences from visible, explicitly computable large scale dynamics down to eddy enhanced molecular diffusion scales when subjected to our unusual and demanding programmatic material, state, and flow conditions. An appreciation of the level of understanding that has been attained about this process in more conventional fluid dynamic environments should be useful and perhaps vital for reaching this goal. These memoranda are intended to assist in developing this appreciation and extending it to fit our special requirements