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A Numerical Simulation Method for Parameter Design of Inner Circular Jet Regulator Cavity

A technology of numerical simulation and pressure stabilization chamber, which is applied in the field of high-pressure gas lubrication, can solve the problems of lack of parameter design method of inner annular jet pressure stabilization chamber and rareness, so as to improve the stability and practicability, and improve the stability and uniformity. , the effect of reducing the number of experiments

Active Publication Date: 2021-05-25
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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[0095]DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0096]Numerical Simulation Method for Numerical Design of Inner Ring to Jet Rad Storage Chamber,figure 1 As shown, it is mainly implemented by the following steps:

[0097]Step 1: Establish an integrated geometric model and two-dimensional calculation of the inner ring to jet stabilizing cavity;

[0098]Such asimage 3 As shown, the outlet section of the inner ring to the jet stabilizing cavity is the inlet section of the transition section of the high pressure disc gaseous bearing; the bearing adopts a double-symmetric shrinkage segment high pressure disk gas bearing, a disc gap 0.3mm, a radius of the short diameter of 30 mm, circle The disk exit radius is 90mm, the transition section diameter D = 10 mm; the mass flow formula of the bearing is:

[0099]

[0100]Where: k = 0.0404; acrIs the area of ​​the minimum cross section in the flow path, that is, the area of ​​the shortage of the shortage of the shortage; P * is a gas source pressure; ...

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Abstract

The invention relates to a numerical simulation method for parameter design of an inner circumferential jet flow stabilizing chamber. The stabilizing chamber is paired with a high-pressure disc gas bearing and belongs to the technical field of high-pressure gas lubrication. This method establishes the integrated geometric model of the bearing and the plenum and the two-dimensional calculation domain, divides the grid of the two-dimensional calculation domain, establishes the corresponding computational fluid dynamics model, and performs numerical simulation of the steady and unsteady flow fields. Out of the flow stability map of the inner circular impinging jet, and then determine the inner diameter D of the plenum chamber and the width h of the ring groove according to the flow stability map, as well as the value range of the position H of the ring groove and the distance I from the top of the chamber, and finally through the constant numerical simulation results Processing is performed to obtain the corresponding relationship between the flow field structure and the parameters of the plenum. The method of the invention reduces the design cost of the flow field, simplifies the experimental research, saves time and money, and improves the practical applicability of the numerical simulation in the process of designing the parameters of the stabilizing chamber.

Description

Technical field[0001]The present invention relates to the field of high pressure gas lubrication, and more particularly to a numerical simulation method for an inner ring to jet stabilizing cavity parameter design, which is used in use with high pressure disc gases.Background technique[0002]The invention patent No. 201610049454.7 is a high pressure disc stop gas bearing and design method using bis symmetric shrinkage segments. "By designing the streamline type design of the bearing structure, the supersonic run flow of the bearing gap is achieved. Restriction of gas pressure. However, the velocity uniformity difference between the high pressure air delivered to the bearing, the speed uniformity and the bearing transition section (i.e., the air flow exit section of the steady cavity) are large, so there is a gas stream stabilizing device to increase the airflow. Uniformity, such a device is referred to as a regulator.[0003]The invention patent application No. 201710051054.4 is a colu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F30/20G06F17/11G06F111/10
CPCG06F17/11G06F30/17G06F30/20G06F2111/10
Inventor 郭良斌王俊文
Owner WUHAN UNIV OF SCI & TECH
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