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Method for establishing nuclear power system shell-and-tube heat exchanger numerical model under motion condition

A technology for shell-and-tube heat exchangers and establishment methods, which is applied in CAD numerical modeling, instruments, 3D modeling, etc., can solve the problems of less research on the performance of shell-and-tube heat exchangers, and achieve the effect of high calculation accuracy

Active Publication Date: 2020-06-12
XI AN JIAOTONG UNIV
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Problems solved by technology

However, most of them only consider the influence of ocean conditions on the flow momentum equation, and further research is needed in the coupling calculation of convection and heat transfer. Secondly, there are few studies on the performance of shell-and-tube heat exchangers under ocean conditions.

Method used

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  • Method for establishing nuclear power system shell-and-tube heat exchanger numerical model under motion condition
  • Method for establishing nuclear power system shell-and-tube heat exchanger numerical model under motion condition
  • Method for establishing nuclear power system shell-and-tube heat exchanger numerical model under motion condition

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing, the present invention is described in further detail

[0044] Such as figure 1 As shown, the method for establishing the numerical model of the shell-and-tube heat exchanger of the nuclear power system under the motion condition of the present invention, the specific steps are as follows:

[0045] Step 1: According to the geometric structure characteristics of the shell-and-tube heat exchanger of the nuclear power system, according to the existing three-dimensional geometric modeling technology, the three-dimensional geometric model of the shell-and-tube heat exchanger suitable for the computational fluid dynamics program is established:

[0046] In order to obtain a larger heat transfer area for the shell and tube heat exchanger in the nuclear power system factory, a large number of heat transfer tubes are generally arranged between the primary and secondary sides, and the wall size of the heat transfer tubes is generally...

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Abstract

The invention discloses a method for establishing a numerical model of a shell-and-tube heat exchanger of a nuclear power system under a motion condition. The method is suitable for establishing a three-dimensional numerical calculation model of large heat exchange equipment of the nuclear power system under the motion condition that different forms are generated under certain external force. Thethree-dimensional numerical calculation model is mainly based on a three-dimensional thermal hydraulic numerical calculation model of the shell-and-tube heat exchanger in static operation. According to the motion forms and the stress characteristics under different motion conditions, the stress is uniform; motion decomposition, stress analysis and decomposition of a single motion, establishment ofan additional force source item acting on a momentum equation under the single motion, and a composite motion additional force source item synthesis process are carried out on a shell-and-tube heat exchanger under a composite motion condition; and finally, establishing a set of numerical calculation model capable of accurately describing the thermal hydraulic characteristics of the shell-and-tubeheat exchanger of the nuclear power system under the composite motion condition.

Description

technical field [0001] The present invention relates to the technical field of a numerical calculation model describing a shell-and-tube heat exchanger of a nuclear power system under different motion conditions, in particular to a shell-and-tube heat exchanger capable of operating under three-dimensional six-degree-of-freedom motion conditions. A numerical model establishment method for calculating the thermal-hydraulic operating characteristics of the heater. Background technique [0002] Nuclear power systems, especially small nuclear power systems, are increasingly being used in various working conditions due to their small size, high energy density, high stability and reliability. In the design process of typical offshore floating nuclear power system stations and miniaturized mobile nuclear power system equipment, the influence of sea wind and waves and the form of transportation on its internal nuclear power system should be fully considered. Secondly, due to natural ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06T17/00G06F111/10G06F119/08G06F119/14
CPCG06T17/00
Inventor 苏光辉赵晓晗王明军章静田文喜秋穗正
Owner XI AN JIAOTONG UNIV
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