分段计算的渠道恒定非均匀流能量方程稳定性探讨及验证

Discussion and Verification about Stability of Subsection Calculational Channel Steady Nonuniform Flow Energy Equation

工程设计中求解渠道水面线常采用能量方程分段计算法,但该计算法将导致计算误差向后续计算传播,因此需对能量方程的稳定性进行分析,以确保计算误差能在后续计算的传播过程中得到有效控制。该文对渠道恒定非均匀流能量方程的稳定性进行了初步探讨,并给出误差控制的建议,同时对天然河道水面线计算也有一定的参考意义,可供相关工程设计人员参考。

energy equation is usually applied to piecewise calculate the channel water surface curve in engineering design , howev-er, subsequent transmission of inaccuracy can be resulted in , so the stability of energy equation needs to be analyzed to a sure the validation control of inaccuracy in subsequent calcunlation .The article is about stability of channel steady nonuniform flow energy e-quation, giving some advise to inaccuracy control , meanwhile, certain reference significance in calculating of water surface profiles in natural river has been provided .