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Numerical simulation method of parameter design of inner-annular-direction jet flow pressure stabilization chamber

A technology of numerical simulation and plenum, which is applied in CAD numerical modeling, electrical digital data processing, design optimization/simulation, etc., can solve the problems of lack of parameter design method and rareness of inner annular jet plenum

Active Publication Date: 2018-07-31
WUHAN UNIV OF SCI & TECH
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Problems solved by technology

[0005] The inner circumferential impinging jet is a new flow form. At present, the research on the inner circumferential impinging jet and the inner circumferential jet plenum is extremely rare, and there is a lack of a systematic and complete parameter design method for the inner circumferential jet plenum.

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  • Numerical simulation method of parameter design of inner-annular-direction jet flow pressure stabilization chamber
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  • Numerical simulation method of parameter design of inner-annular-direction jet flow pressure stabilization chamber

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Embodiment Construction

[0095] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0096] A numerical simulation method for parameter design of inner annular jet plenum, such as figure 1 As shown, it is mainly realized by the following steps:

[0097] Step 1: Establish the integrated geometric model and two-dimensional calculation domain of the high-pressure disc gas bearing and the inner circumferential jet plenum;

[0098] Such as image 3 As shown, the outlet section of the inner annular jet flow stabilizing chamber is the inlet section of the transition section of the high-pressure disc gas bearing; the bearing adopts a double-symmetric contraction segment high-pressure disc gas bearing, the gap between the discs is 0.3 mm, and the radius of the contraction segment exit is 30 mm. The disc outlet radius is 90mm, and the transition section diameter d=10mm; the mass flow formula of the bearing is:

[0099...

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Abstract

The invention relates to a numerical simulation method of parameter design of an inner-annular-direction jet flow pressure stabilization chamber, and belongs to the technical field of high-pressure gas lubrication. The pressure stabilization chamber is used in pairing with a high-pressure disk gas bearing. According to the method, an integrated geometric model of the bearing and the pressure stabilization chamber and a two-dimensional calculation domain are established; a two-dimensional calculation domain mesh is divided; a corresponding calculation fluid dynamics model is established; numerical simulation of steady and unsteady flow fields is carried out, and flow stability graphs of inner-annular-direction impinging jet flow are firstly drawn; then an inner diameter D of the pressure stabilization chamber, annular-groove width h, and value ranges of an annular-groove position H and a chamber top distance I are determined according to the flow stability graphs; and finally, correspondence relationships of flow field structures and parameters of the pressure stabilization chamber are obtained through processing on steady-numerical-simulation results. According to the method of theinvention, flow field design costs are reduced, experiment research is simplified, time and fees are saved, and practical application of numerical simulation in a parameter design process of the pressure stabilization chamber is improved.

Description

technical field [0001] The invention relates to the technical field of high-pressure gas lubrication, in particular to a numerical simulation method for parameter design of an inner circumferential jet flow stabilizing chamber, which is used in pairs with a high-pressure disc gas bearing. Background technique [0002] Patent No. 201610049454.7 is an invention patent "a high-pressure disc thrust gas bearing and design method using double symmetrical contraction section air supply". air pressure limitation. However, the velocity uniformity of the high-pressure air delivered to the bearing by the air supply pipeline is quite different from the velocity uniformity required by the inlet section of the bearing transition section (that is, the airflow outlet section of the plenum chamber), so an airflow stabilization device is needed to improve the airflow. Uniformity, this device is called a plenum. [0003] The invention patent application with the application number 2017100510...

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Application Information

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IPC IPC(8): G06F17/50G06F17/11
CPCG06F17/11G06F30/17G06F30/20G06F2111/10
Inventor 郭良斌王俊文
Owner WUHAN UNIV OF SCI & TECH
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