The Study On The Theory Of Water Hummer

Firstly, the paper presents, briefly the basic theories of current water hammer calculation including both water hammer mathematic model and calculative methods; points out continuity equation not meeting the conditions of steady, sin being inherent illogically in current water hammer mathematics model, calculative methods of the equation being scarcely precise , etc, which account for the continuity equation is false in the current water hammer mathematics model. And detailedly analyzing reasons including these problems, it is can be found that not thinking of the slope of pipeline and the friction in the process of production water hammer pressure functions, but thinking of the effect of the slope pipeline in the process of production the consequent water hammer calculative continuity function , which results in the inconsequent illogicality in the whole process of producing. And in the process of producing the concepts of the total derivative and the partial derivative are confused. It is the fundamental reason lead to the continuity function faults.Consequently ,the paper makes out experimental investigation and numeric calculation for phenomenon of water hammer, and deeply proves that the continuity equation for water hammer calculation is false by comparing and analyzing them.In the end, the paper uses precise step to produce the continuity equation in the mathematics model for water hammer calculation and gains more perfect and more precise basic system of equations for water hammer calculation is show below:continuity equationmotion equationThe new basic system of equations for water hammer calculation can entirely meet the conditions of the steady flow.