在封闭水槽中用氢气泡方法观察了纵向涡对近壁湍流结构的影响，涡的下洗侧出现了展向距离较宽、流动较稳定的快斑区，流向速度快；涡的上洗侧出现了含有慢斑的区域，流动结构复杂，流向速度慢，纵向涡使下洗侧速度较快的流体流向壁面，使上洗侧速度较慢的流体远离壁面。 The effect of longitudinal vortex on the turbulent structure of the near wall was observed by hydrogen bubble method in a closed tank. The fast wash zone with wide spreading distance and stable flow appeared on the bottom wash side of the vortex, and the flow velocity was fast. On the upper wash side A region with a slow spot appears, the flow structure is complex, the flow velocity is slow, and the longitudinal vortex causes the fluid at the lower wash side to flow to the wall, leaving the fluid at a slower rate on the wash side away from the wall.