Relative Spreading and Structure of Coupled Turbulent Thermal and Velocity Fields.

摘要

Brief descriptions of research accomplished under the grant 'Relative Spreading and Structure of Coupled Turbulent Thermal and Velocity Fields'are presented in nine categories: (a) data acquisition and processing, (b) interaction of a cold and a lukewarm wake, (c) metallic films for thermal tracing, (d) point-source thermal tracer techniques, (e) dynamic temperature compensation for hot-films, (f) effect of upstream laminar wakes on blunt bodies, (g) response of split-and hot-films, (h) differential temperature measurements,and (i) circular cylinder near wake. The techniques of thermal tracing,resistance thermometry,temperature compensation,digital data acquisition and processing,conditional sampling and averaging,and phase detection and averaging are developed and combined in the experimental investigation of three fluid mechanical problems.