On every step, the maximum of the turbulencedissipation rate is at the step tip. Because the interaction between the skimming flow and the step tips causes the energy to dissipate continuously, so that the step can have better energy dissipation results.

• 在每个阶梯上，紊动耗散率的最大值出现在阶梯的突角处，正是由于滑移主流与阶梯突角之间的相互作用使能量不断耗散，从而使阶梯具有良好的消能效果。