波、流联合作用下的推移质输沙率

本文基于Bagnold水流功率原理,考虑到非线性波传播质速度的影响,导出了在波浪单独作用下推移质净输沙率公式,该公式体现了有限水深前进波在沙质床面上波浪掀沙、水流输沙的机理,并得到试验资料的验证.在此基础上进一步推导了波、流联合作用下推移质单宽输沙率公式,并与现有的波流输沙率公式作了比较,计算结果适中.上述公式具有一定理论基础,概念清晰,结构简明,使用方便,可适用于非破碎带输沙计算.

Bedload Transport Rate under Action of Waves with Currents

Based on the theory of Bagnold's fluid energy,the formulas of bedload transport rate (?) waves are derived and verified in this paper by considering the effect of the mass tranport of nonlinear waves. These formulas represent the machanism that sand particals are entrained by waves and transported by currents on the surface of sandy bed under the action of waves.The formulas of bedload transport rate of waves with currents are further derived,and com-pared with other formulas. By paired comparison,the formulas are derived in this paper With strict basis of theory and simple formation, it can be used to calculate bedload transport Under unbreaking wave condition.