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Actual gas physical property simulation method and system based on computational fluid mechanics

A computational fluid dynamics and real gas technology, applied in the field of computational fluid dynamics simulation, which can solve the problems of slow solution process, heavy computational burden, and difficulty in obtaining internal calculation methods.

Active Publication Date: 2021-11-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, none of the existing solvers provide the ability to solve compressible Riemann problems and simultaneously use non-ideal equations of state
In addition, the implemented non-ideal equation of state requires iterative solution, resulting in heavy computational burden and slow solution process
Existing commercial CFD software has various limitations in terms of flux format, actual physical parameter capture, and combination with optimization algorithms. It is difficult to obtain its internal calculation method, just like a "black box", and it cannot be applied to the research of cutting-edge exploration problems. among

Method used

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  • Actual gas physical property simulation method and system based on computational fluid mechanics
  • Actual gas physical property simulation method and system based on computational fluid mechanics
  • Actual gas physical property simulation method and system based on computational fluid mechanics

Examples

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Embodiment 1

[0036] This embodiment provides an actual gas physical property simulation method based on computational fluid dynamics;

[0037] Such as figure 1 As shown, the actual gas physical property simulation method based on computational fluid dynamics includes:

[0038] S101: Obtain the import and export parameters of the supercritical carbon dioxide turbine, the import and export parameters include: temperature, pressure and turbine speed;

[0039] S102: Perform full three-dimensional modeling of the supercritical carbon dioxide turbine, and perform spatial grid division on the established three-dimensional model;

[0040] S103: Based on the obtained inlet and outlet parameters and the 3D model after grid division, perform computational fluid dynamics simulation on the actual gas properties in the supercritical carbon dioxide turbine, and obtain the flow field distribution and flow conditions inside the turbine.

[0041] In this embodiment, the algorithm in the CFD solver is used...

Embodiment 2

[0104] This embodiment provides an actual gas physical property simulation system based on computational fluid dynamics;

[0105] Actual gas physical property simulation system based on computational fluid dynamics, including:

[0106] The obtaining module is configured to: obtain the import and export parameters of the supercritical carbon dioxide turbine, the import and export parameters include: temperature, pressure and the speed of the turbine;

[0107] A modeling module configured to: perform full three-dimensional modeling on the supercritical carbon dioxide turbine, and perform spatial grid division on the established three-dimensional model;

[0108] The simulation module is configured to: perform computational fluid dynamics simulation on the actual gas properties in the supercritical carbon dioxide turbine based on the obtained inlet and outlet parameters and the meshed three-dimensional model, and obtain the flow field distribution and flow conditions inside the tu...

Embodiment 3

[0113] This embodiment also provides an electronic device, including: one or more processors, one or more memories, and one or more computer programs; wherein, the processor is connected to the memory, and the one or more computer programs are programmed Stored in the memory, when the electronic device is running, the processor executes one or more computer programs stored in the memory, so that the electronic device executes the method described in Embodiment 1 above.

[0114] It should be understood that in this embodiment, the processor can be a central processing unit CPU, and the processor can also be other general-purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, o...

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Abstract

The invention discloses an actual gas physical property simulation method and system based on computational fluid mechanics, and the method comprises the steps: obtaining inlet and outlet parameters of a supercritical carbon dioxide turbine, the inlet and outlet parameters including temperature, pressure and the rotating speed of the turbine; performing full three-dimensional modeling on a supercritical carbon dioxide turbine, and performing spatial grid division on an established three-dimensional model; and based on the obtained inlet and outlet parameters and the three-dimensional model after grid division, performing computational fluid mechanics simulation on actual gas physical properties in the supercritical carbon dioxide turbine to obtain flow field distribution and flow conditions in the turbine. According to the method, a Riemannian problem solver and an actual gas physical property look-up table method are coupled, the method is suitable for the flux format of the actual gas physical property and the technology of reducing the difference error caused by look-up table and the like, the actual gas physical property Riemannian problem can be quickly and reliably simulated, and especially the problem of high-power-density compact turbomachinery is solved.

Description

technical field [0001] The invention relates to the field of computational fluid dynamics simulation based on actual gas physical properties, in particular to a simulation method and system for actual gas physical properties based on computational fluid dynamics. Background technique [0002] The statements in this section merely mention the background technology related to the present invention and do not necessarily constitute the prior art. [0003] Supercritical carbon dioxide (S-CO 2 ) power cycle has attracted extensive attention in recent years due to its compact structure, higher efficiency, and simpler cycle layout. S-CO 2 Considered to be an excellent working fluid because of its many advantages such as compatibility with H 2 Ease of criticality, availability, and low global warming potential compared to other gases compared to O or other fluids. For power cycles in the 0.1 to 25MW range, use S-CO 2 Allows a paradigm shift to use highly efficient radial turbin...

Claims

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Application Information

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IPC IPC(8): G06F30/28G06F30/23G06T17/20G06F113/08G06F119/14
CPCG06F30/28G06F30/23G06T17/205G06F2113/08G06F2119/14
Inventor 齐建荟徐进良韩奎华秦侃肖永清
Owner SHANDONG UNIV
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