RGPowerFlow：面向高速旋转机械的强变热物性真实气体流动高精度数值仿真平台

doi:10.3901/JME.260156

机械工程学报 ›› 2026, Vol. 62 ›› Issue (12): 398-413.doi: 10.3901/JME.260156

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RGPowerFlow：面向高速旋转机械的强变热物性真实气体流动高精度数值仿真平台

张恩搏, 吴一鸣, 冯彦力, 沈明芋, 赵昆鹏, 白博峰

西安交通大学绿色氢电全国重点实验室西安 710049

收稿日期:2025-08-17 修回日期:2025-12-03 发布日期:2026-08-03
作者简介:张恩搏，男，1992年出生，博士，助理教授，硕士研究生导师。主要研究方向为叶轮机械高效气动热力设计。E-mail:enbo_zhang@xjtu.edu.cn
吴一鸣，男，2001年出生。主要研究方向为离心压缩机气动设计与结构优化。E-mail:1426681723@stu.xjtu.edu.cn
冯彦力，男，2001年出生。主要研究方向为径向式透平气动设计与结构优化。E-mail:feng_yanli@stu.xjtu.edu.cn
沈明芋，男，2002年出生。主要研究方向为叶轮机械整机集成与优化设计。E-mail:shenmy@stu.xjtu.edu.cn
赵昆鹏，男，1989年出生，博士，副教授，博士研究生导师。主要研究方向为多相流动与传热。E-mail:kunpeng_zhao@xjtu.edu.cn
白博峰(通信作者)，男，1971年出生，博士，二级教授，博士研究生导师。主要研究方向为动力工程多相流、多相流动与传热。E-mail:bfbai@mail.xjtu.edu.cn
基金资助:
国家自然科学基金(52506193)、中国博士后创新人才支持计划(BX20240283)、陕西省博士后科研(2025BSHSDZZ070)和陕西省三秦英才特殊支持计划资助项目。

RGPowerFlow：High-order Numerical Platform for Real Gas Flows with Strongly Variable Thermal Properties in High-speed Rotating Machines

ZHANG Enbo, WU Yiming, FENG Yanli, SHEN Mingyu, ZHAO Kunpeng, BAI Bofeng

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049

Received:2025-08-17 Revised:2025-12-03 Published:2026-08-03

摘要/Abstract

摘要： 针对高速旋转机械内真实气体热物性强烈突变导致流动过程模拟精度低、难以准确分析其气动特性等问题，开发一套高精度数值仿真平台。平台包括前处理模块、流动求解器和后处理模块，可实现通流域建模与网格划分、定常与非定常真实气体流动过程求解和流场仿真结果呈现等功能。流动求解器中真实气体热物性耦合迭代方法可准确计算热物性非线性突变行为，有限体积三阶通量重构格式可实现复杂通流结构内激波间断的精确捕捉，预处理全隐时间步进方法可解决低速流中特征速度差异带来数值振荡和伪物理解的问题。采用标准算例与试验对平台的性能进行了验证，并应用于超临界CO₂离心压缩机内部流场分析，结果表明：开发的数值仿真平台具备高速旋转机械流体域建模、网格划分、流场模拟仿真与结果呈现功能，可实现激波等复杂流动过程的准确模拟，收敛速度与稳定性优于传统数值格式；可预测超临界CO₂离心压缩机内流场分布，气动特性分析结果与试验相近。因此，开发的数值仿真平台有望为高速旋转机械内真实气体流场与气动特性分析提供解决方案。

关键词: 数值仿真平台, 旋转机械, 真实气体流动, 非线性热物性, 高阶数值格式

Abstract: A high-order numerical platform has been developed to address the problems of low simulation accuracy and difficulty in analyzing aerodynamic characteristics caused by sudden changes in real gas thermal properties in high-speed rotating machines. The numerical platform includes a pre-processing module, a flow solver and a post-processing module, which can realize the functions of fluid domain modeling and meshing, solving the steady and transient real gas flows, and presenting the results. The coupled iterative method accurately can predict the nonlinear abrupt behaviors of real gas thermophysical properties, the finite-volume third-order flux reconfiguration scheme can capture the shock waves within the complex structure, and the preconditioning implicit time-stepping method can solve the problem of numerical oscillations and pseudo-physical results due to characteristic velocity differences in low-velocity fields. The performance d platform is verified using the numerical examples and experiments, and applied to analysis the internal flow fields of supercritical CO₂ (S-CO₂) centrifugal compressor. The results show that platform can realize fluid domain modeling, mesh generation, flow fields simulation and results presentation, and can simulate complex flow processes, with better convergence and stability than traditional schemes. The flow fields inside the S-CO₂ centrifugal compressor can be simulated using this developed platform, and the results of aerodynamic characterization are similar to those of experiments. Therefore, the developed numerical platform is expected to provide a solution for the analysis of real gas flow fields and aerodynamic characteristics in high-speed rotating machines.

Key words: numerical platform, rotating machines, real gas flow, nonlinear thermophysical properties, high-order scheme

中图分类号:

TK05

张恩搏, 吴一鸣, 冯彦力, 沈明芋, 赵昆鹏, 白博峰. RGPowerFlow：面向高速旋转机械的强变热物性真实气体流动高精度数值仿真平台[J]. 机械工程学报, 2026, 62(12): 398-413.

ZHANG Enbo, WU Yiming, FENG Yanli, SHEN Mingyu, ZHAO Kunpeng, BAI Bofeng. RGPowerFlow：High-order Numerical Platform for Real Gas Flows with Strongly Variable Thermal Properties in High-speed Rotating Machines[J]. Journal of Mechanical Engineering, 2026, 62(12): 398-413.

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RGPowerFlow：面向高速旋转机械的强变热物性真实气体流动高精度数值仿真平台

RGPowerFlow：High-order Numerical Platform for Real Gas Flows with Strongly Variable Thermal Properties in High-speed Rotating Machines

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