장애물이 있는 정사각 덕트의 역류유동 특성

In the present study the reverse flow phenomenon in a square duct is investigated using PIV. The flow features are much different in this case compared to the two-dimensional channel as we are dealing with the three dimensional square duct flow (side:b) and the obstruction now is a square plate. The flow at the rear end of the duct where reverse flow enters, reveals features of three dimensional vortical flow and shear layer interactions. Figure 1 shows the flow field at the entrance and rear ends of the duct for a typical case. The detailed flow field including animation and PIV measurements will be presented in the final version of the paper.