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A Numerical Simulation Method for Parameter Design of Axisymmetric Jet Plenum

A technology of parameter design and numerical simulation, applied in the field of high-pressure gas lubrication, which can solve the problem of rare jet pressure chamber

Active Publication Date: 2021-03-26
WUHAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] However, the research on the axisymmetric jet plenum in the high-pressure gas lubrication system is extremely rare at present, and there is a lack of a systematic and perfect parameter design method for the axisymmetric jet plenum

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  • A Numerical Simulation Method for Parameter Design of Axisymmetric Jet Plenum
  • A Numerical Simulation Method for Parameter Design of Axisymmetric Jet Plenum
  • A Numerical Simulation Method for Parameter Design of Axisymmetric Jet Plenum

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Embodiment Construction

[0087] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0088] A numerical simulation method for parameter design of an axisymmetric jet plenum, such as figure 1 As shown, it is mainly realized by the following steps:

[0089] Step 1: Build a Physical Model

[0090] Such as figure 2 As shown, drawing the geometric model of the axisymmetric jet plenum needs to determine four dimensional parameters: the length of the plenum, the inner diameter of the plenum, and the diameter of the inlet of the plenum D. 1 And the outlet diameter of the plenum chamber d. The axisymmetric jet flow stabilizing chamber is used in conjunction with the high-pressure disc gas bearing with double symmetrical shrinkage sections. The design mass flow rate of the bearing is q max (The maximum mass flow q that can pass max ) and the outlet diameter d of the plenum chamber (that is, the diameter of the beari...

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Abstract

The invention relates to a numerical simulation method for designing parameters of an axis symmetric jet pressure-stabilizing cavity. The method includes: building an integrated geometric model of a bearing and the pressure-stabilizing cavity and a two-dimensional flow area, performing grid division on the two-dimensional flow area, and building a corresponding computational fluid mechanics modelfor fixed constant numerical simulation; determining a valuing range of length L according to sensitivity of axis speed distribution of the pressure-stabilizing cavity to inner diameter parameters D,determining the length L according to uniformity index of speed distribution on an outlet section, and determining inner diameter D according to whether cross section speed distribution is smooth or not. The method improves actual applicability of numerical simulation in the process of designing the parameters of the axis symmetric jet pressure-stabilizing cavity.

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 axisymmetric jet flow stabilizing chamber, which is used in conjunction 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 pipe is quite different from the velocity uniformity required by the inlet section of the bearing air supply hole (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 201710690902.6 is "a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/10
CPCG06F30/20
Inventor 郭良斌王俊文
Owner WUHAN UNIV OF SCI & TECH
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