Method for analyzing pipeline water hammer

Abstract

The invention relates to the technical field of fluid mechanics, and provides a new method for analyzing a pipeline water hammer, a water hammer equation under a moving coordinate system is solved, and simulation of a water hammer phenomenon in a pipeline is achieved. Meanwhile, the pipeline water hammer problem can be more conveniently simulated on the premise that the numerical precision is met.Therefore, the technical scheme adopted by the invention is as follows: the method comprises the following steps: step 1, initialization: initializing related variables, particles and upstream and downstream virtual particle information; step 2, listing a solving equation and performing iterative computation; and step 3, outputting a result. The method is mainly applied to fluid mechanics engineering design occasions.

Description

technical field [0001] The invention relates to the technical field of fluid mechanics, in particular to a new method for analyzing pipeline water hammer. Background technique [0002] The pipeline water hammer problem can be solved by rigid column theory, characteristic line method or some grid methods when the elasticity of water is not considered. However, in most cases, in order to solve the problem more accurately, the elasticity of the water body must be considered sometimes. However, the characteristic line method or grid method usually needs to track the movement of the interface, which will cause complex calculation problems, and the calculation accuracy will also decrease with the accumulation of interpolation errors. When the gridless particle method in the form of density summation is used to solve the pipeline water hammer problem, the elasticity of water can be fully considered, and the calculation process is more convenient, and the pipeline water hammer probl...

AI Technical Summary

Problems solved by technology

[0002] The pipeline water hammer problem can be solved by rigid column theory, characteristic line method or some grid methods when the elasticity of water is not considered. However, in most cases, in order to solve the problem more accurately, the elasticity of the water body must be considered sometimes. However, the characteristic line method or grid method usually needs to track the movement of the interface, which will cause complex calculation problems, and the calculation accuracy will also decrease with the accumulation of interpolation errors

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