By use of this model,it is demonstrated that the Karman constant is varied in vertical distance from near(0.4) in near bed region to below(0.4) in main flow region.

• 利用该流速分布模型；得到挟沙水流的卡门常数沿垂线是变化的结论；即从近底区的约0.；4渐变到主流区的小于0