The effect of buoyancy is removed from a turbulent Couette flow by testing it under conditions of microgravity. The velocity field of the cold flow under normal gravity forces is fully characterized. The feasibility of using acetone planar laser induced fluorescence to measure turbulent passive scalar diffusion is confirmed. It is determined that the full range of turbulence scales can be observed experimentally for Reynolds numbers of interest in subsequent combustion studies. (Author)
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Disseau et al. (1997) studied this question.
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