Transient Numerical Simulation Calculation Method for Full Channel of Hydraulic Torque Converter
A hydraulic torque converter and numerical simulation technology, which is applied in the field of hydraulic equipment, can solve the problems of high cost, long test period, and difficulty in predicting the characteristics of high-power and high-speed torque converters, and achieve low cost and short test period Effect
Active Publication Date: 2017-08-08
防城港市宾防发展有限公司
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Problems solved by technology
[0002] The internal flow field of the hydraulic torque converter is the core research object in the hydraulic mechanical transmission device. Up to now, the performance prediction of the torque converter by various enterprises has mostly been based on the bench test. However, this process has long experimental periods and high costs. In addition to the problem, the most critical problem is that the existing experimental equipment is difficult to predict the characteristics of the high-power high-speed torque converter
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[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings, but not as any limitation to the present invention.
[0016] Embodiments of the present invention: a transient numerical simulation calculation method for the full channel of a hydraulic torque converter, the method is to establish a geometric model of the hydraulic torque converter and pre-process the model, and establish the full flow of the hydraulic torque converter Then, the calculation domain is divided into the pump fluid domain, the turbine fluid domain, the guide wheel fluid domain and the grid interface between the mutual fluid domains. Next, the CFD slip grid technology is used to numerically simulate and analyze the flow field in the torque converter, and the effective results obtained from the numerical solution are substituted into the torque converter impeller torque calculation formula and the torque converter performance parameter calculation fo...
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The invention discloses a hydraulic torque converter full-flow-channel transient numerical simulation calculation method. The method is used for establishing a geometric model and conducting model pretreatment for a hydraulic torque converter, establishing a full-flow-channel mesh model of the hydraulic torque converter and dividing a computational domain of the full-flow-channel mesh model into a pump impeller fluid domain, a turbine fluid domain, a guide wheel fluid domain and mesh interfaces among the fluid domains. Under the working conditions of different rotating speed ratios of a pump impeller and a turbine, the CFD sliding mesh technology is used for numerical simulation and analysis of an internal flow field of the hydraulic torque converter, effective results obtained by numerical solution are substituted into an impeller torque computational formula and a performance parameter computational formula of the hydraulic torque converter, and characteristic curves of the hydraulic torque converter under different working conditions are fitted. According to the method, the priority is given to research on the flow field characteristics of the hydraulic torque converter, the method can be conducted with existing experiment equipment, an experimental period is short, and cost is low.
Description
technical field [0001] The invention relates to a transient numerical simulation calculation method for a full channel of a hydraulic torque converter, which belongs to the technical field of hydraulic equipment. Background technique [0002] The internal flow field of the hydraulic torque converter is the core research object in the hydraulic mechanical transmission device. Up to now, the performance prediction of the torque converter by various enterprises has mostly been based on the bench test. However, this process has long experimental periods and high costs In addition to the problem, the most critical problem is that the existing experimental equipment is difficult to predict the characteristics of the high-power high-speed torque converter. Contents of the invention [0003] The purpose of the present invention is: to provide a kind of hydraulic torque converter full channel transient numerical simulation calculation method, can realize the characteristic predicti...
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IPC IPC(8): G06F17/50
Inventor 蒋宏婉张文博何林李长虹
Owner 防城港市宾防发展有限公司