摘要
针对近年来最小二乘法用于马斯京根法出现的一种趋势,从流量演算法的水力学理论出发,剖析了马斯京根法进行洪水演算的原理,指出了马斯京根法中参数的物理意义。同时通过马斯京根法的理论解释,从理论上论证了康吉演算法推算具有衰减特性的洪水波运动必须满足的条件,指出了最小二乘法用于马斯京根法公式参数确定时造成的参数物理意义的模糊,并且该做法并不能从理论上保证该条件的成立以及可能出现的问题,所得结论愿与读者商榷。
Aiming at the trend of the least square method used in Muskingum method in recent years, starting from the hydraulic theory of the flow algorithms method, this paper analyzes the flooding calculations principle of the Muskingum method and points out the physical meaning of parameters of Muskingum method. Then through theoretical explanation of the Muskingum method, this paper theoretically demonstrates the conditions which should be met when the Cunge algorithms method is used for flood with attenuation characteristics. It also points out the fuzzy of the parameters＇ physical meaning and possible arising problems when the least square method is used in the Muskingum method, and the method is not able to guarantee the establishment of the conditions.
出处
《节水灌溉》
北大核心
2009年第8期57-58,共2页
Water Saving Irrigation
关键词
流量演算法
马斯京根法
最小二乘法
参数确定
flow algorithms method
Muskingum method
least square method
determination of parameters
