| 摘要 |
PURPOSE:To adjust the distribution of flow speeds of circulating fluid readily, by providing a device, which sucks the fluid at the boundary layer of an inner wall and discharges the fluid to the downstream along the inner wall, at the corner part of a circulating flow path. CONSTITUTION:At a corner part 1A of a circulating flow path 1 of a water circulating tank for flowing force tests, a fluid sucking flow path 11 and a fluid discharge flow path 13 are provided. A pump 15 is provided between both flow paths. In this way, a device A is arranged. By said device A, a boundary layer in the vicinity of an inner wall, which causes the reduction in speed of the circulating fluid at the inner surface part, is sucked. The layer is discharged to the downstream along the inner wall. Therefore, the separation of the fluid from the wall surface of the inner flow path is suppressed. The difference between the flow speeds at the inner surface side and the outer surface sides is suppressed to the smallest extent. Thus the adjustment of the distribution of the flow speeds of the circulating fluid can be performed very easily. |
