The value of additional coefficientof raft roughness is established through the comparative analysis of raft prototype resistance measurement on the spot and relevant model experiment.
通过木排原型阻力的现场测试与相应的模型试验分析对比,确定了木排粗糙度附加系数的数值。
2
In the calculations of roll torque of ablation lag, a rapid method for calculating combined influence of ablation injection and roughness on skin friction coefficient is mainly described.
Since if the frictional resistance coefficient is a function of relative roughness, then the form resistance coefficient is independent of the Reynolds number.