摘要
根据笔者关于脉动切应力的假设,建立了明槽均匀流基本方程;对二维和矩形断面等简单情形,给出了流速分布和Chézy系数C的公式;对梯形和其它断面形状,建议了一个数值方法和估算Chézy系数C的方法.给出了糙率n和糙度k_1的对应表,据此对矩形断面明槽的C值作了计算比较,以说明表格的适用性.
An equation of uniform flow in open channel is established based upon the author's hypothesis of fluctuating shear-stress. The formulas of velocity-distribution and chézy's coefficient C for twodimensional flow and flow with a rectangular cross-section are presented. For trapezoidal and other prismatic channel sections, a method for estimating the value of C is given, and a numerical method is proposed. Futher, the relation betveen roughmess coefficient ? and roughness height K_s is tabulated. For Comparison the Chézy's coefficient C is computed with both empirical formulas and the author's theoretical formula.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1993年第1期39-47,共9页
Journal of Hohai University(Natural Sciences)
关键词
流场分析法
明槽
均匀流
flow-field method
Chézy's coefficient
roughness coefficient
roughness height
uniform flow in open-channel
