通过圆形涵洞进行上溯洄游的鱼类通常受到涵洞内较高水流流速的影响。研究采用了计算流体动力学模型,验证了不同尺寸涵洞内各种几何形状扰流板在减小水流流速、增大水深,最终使小体形鱼类上溯洄游率上升方面的效果。结果表明,为特定鱼类或鱼群设计的标准挡板,可以成功地运用于各种尺寸的涵洞。现场试验也更加证实了该设计的有效性。 Fish traced upstream through circular culverts are often affected by higher flow velocities within the culvert. The computational fluid dynamics model was used to verify the effectiveness of the spoilers of various geometrical shapes in different sizes of culverts in reducing the velocity of flow, increasing the depth of water and finally increasing the upward migration of small-sized fish. The results show that standard baffles designed for a particular fish or school of fish can be successfully applied to culverts of all sizes. Field tests also confirmed the effectiveness of the design.