Acquisition of Three-Component Laser-Doppler Velocimeter

摘要-9906746B。 ARMALY首席研究员建议购买三分量激光多普勒测速仪。 该系统将用于测量分离的、受浮力影响的对流流中的三个速度分量。 该系统将与现有的用于温度测量的液晶热成像系统结合使用，同时测量来自加热的恒定通量表面的流场和表面传热系数，作为对后向台阶的三维几何结构中分离和重新附着的流动区域中的流动和传热进行协调实验和数值研究的一部分。 重点是确定传热和浮力对平均速度分量和脉动速度分量的影响。 将确定雷诺剪切应力、正应力和传热系数。三分量 LDV 将是密苏里大学系统和密苏里州四个校区中唯一的一个，并将可供其他参与流体力学研究的教师使用。

ABSTRACTCTS-9906746B. ARMALYThe principal investigator proposes the acquisition of three component laser Doppler velocimeter. The system will be used to measure the three velocity components in separated, buoyancy affected, convective flows. The system will be used in conjunction with an existing liquid crystal thermography system for temperature measurements to simultaneously measure the flow field and the surface heat transfer coefficients from a heated constant flux surface as part of a coordinated experimental and numerical study of the flow and heat transfer in the separated and reattached flow regions in the three ddimensional geometry of a backward facing step. The focus will be on determining the effect of the heat transfer and the buoyancy on the mean and fluctuating velocity components. Reynolds shear stresses, normal stresses, and heat transfer coefficients will be determined.The three component LDV will be the ony one in the four campus University of Missouri system and the State of Missouri and will be available to other faculty involved in fluid mechanics research.