Acquisition of Three-Component Laser-Doppler Velocimeter

abstractcts - 9906746 b。研究人员提出了三分量激光多普勒测速仪的研制方案。该系统将用于测量分离流、受浮力影响流和对流流中的三个速度分量。该系统将与现有的液晶热成像系统结合使用，用于温度测量，同时测量从加热的恒定通量表面的流场和表面传热系数，作为在三维几何形状的向后台阶中分离和重新连接的流动区域的流动和传热的协调实验和数值研究的一部分。重点将是确定传热和浮力对平均和波动速度分量的影响。雷诺兹剪应力，正应力和传热系数将被确定。三组分LDV将是密苏里大学系统和密苏里州四个校区中唯一的LDV，并将提供给参与流体力学研究的其他教师。

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.