Vane pump cavitation numerical simulation automatic operation method based on ANSYS-CFX software

Abstract

The invention discloses a vane pump cavitation numerical simulation automatic operation method based on ANSYS-CFX software. The ANSYS-CFX software is used for setting a vane pump cavitation-free numerical calculation file which comprises initial modeling and mesh division of a flow field zone, boundary condition setting, calculation model selection and convergence condition judgment; a cavitation numerical calculation file is set and comprises vapor-phase physical property material addition, inlet two-phase component boundary condition setting, initial inlet pressure boundary condition setting and cavitation model selection; the ANSYS-CFX software is used for automatically operating a required file with a name suffix of ccl; a batch file capable of realizing cavitation numerical simulation automatic operation is established; and the file is double-clicked and operated, so that the automatic operation for vane pump cavitation numerical simulation can be realized. According to the method, the whole numerical calculation process can be guaranteed to operate continuously and automatically, so that the time spent in the whole numerical calculation process is shortened to the greatest extent.

Description

technical field [0001] The invention relates to a hydraulic mechanical cavitation numerical simulation operation method, in particular to an automatic operation method for vane pump cavitation numerical simulation based on ANSYS-CFX software. Background technique [0002] Vane pumps are strategic equipment related to the national economy, the people's livelihood and national security. As important energy conversion devices, they are widely used in various sectors of the national economy. The cavitation problem has always been the key core issue in the field of vane pump research, and also the core issue of key technologies in various engineering fields. Almost all vane pumps will encounter cavitation problems. Due to the complexity of cavitation phenomena, numerical calculation methods have always been one of the main means of cavitation research. At present, many CFD software can achieve this purpose, among which ANSYS-CFX is widely used because of its friendly interface, ...

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Problems solved by technology

However, when performing the numerical calculation of the vane pump cavitation problem, it is necessary to artificially reduce the inlet pressure boundary value of the vane pump until the required cavitation number is reached.

This requires the researchers to pay attention to the state of the calculation from time to time, and when the researchers go out or rest, one of the calculations under pressure converges and stops. At this time, the calculation enters the next step because the inlet pressure value cannot be modified in time. It will inevitably prolong the time of the whole cavitation numerical calculation process, so as to delay the progress of other projects

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