Numerical Investigation of Nonequilibrium Flow Mechanics Dpending on Time and Space Scales in Non-perfect Gas

非完美气体中时空尺度上的非平衡流动力学的数值研究

• 批准号: 12650154
• 负责人: YAMAMOTO Satoru
• 金额: $ 2.05万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650154/
• 关键词: Computational Fluid Dynamics; Compressible Flows; Nonequilibrium Flows; Non-Perfect Gas; Condensation; Heterogeneous Nucleation; Low-Mach Number Flows; Numerical Method; エアロゾル; 非定常流れ; 蒸気タービン

The purpose of this research is to develop the computational algorithms for solving nonequilibrium flow phenomena deeply depending time and space scales in non-perfect gas. Especially, nonequilibrium condensate flows with homogeneous and heterogeneous nucleation, magneto-plasma dynamics(MPD) flows with thermal nonequilibrium, and very low-Mach-number flows with condensation were taken into consideration.In 2000, a condensation model which is applicable to condensation with heterogeneous nucleation in atmospheric weather conditions was developed. Numerical simulations for turbine stator-rotor interaction in wet-steam turbine considering nonequilibrium condensation were also executed.In 2001, a computational algorithm based on the preconditioning method for solving low-Mach-number condensate flows was developed. A computational code for solving MPD flows with thermal nonequilibrium was also developed.In 2002, transonic condensate flows in atmospheric flight conditions were numerically investigated using the condensation model developed in 2000. Furthermore, thermal convections with condensation in low gravity environment were calculated using the preconditioning algorithm developed in 2001.

本研究的目的是发展求解非完美气体中深度依赖时间和空间尺度的非平衡流动现象的计算算法。特别考虑了均匀和非均匀成核的非平衡凝析流、热非平衡磁等离子体动力学（MPD）流和极低马赫数凝析流。2000年，建立了一个适用于大气天气条件下非均相成核凝结的凝结模型。对考虑非平衡冷凝的湿蒸汽轮机定转子相互作用进行了数值模拟。2001年，提出了一种基于预处理法求解低马赫数凝析流的计算算法。本文还开发了求解热不平衡MPD流动的计算程序。2002年，利用2000年开发的凝结模型对大气飞行条件下的跨音速凝结流进行了数值研究。在此基础上，利用2001年提出的预处理算法计算了低重力环境下带凝结的热对流。

项目成果

山本 悟: "前処理型陰的流束分離スキームとその熱対流問題への応用"日本機械学会論文集B編. 69. 274-279 (2003)

Satoru Yamamoto：“预处理隐式通量分离方案及其在热对流问题中的应用”，日本机械工程师学会汇刊，B 版 69. 274-279 (2003)。

S.Yamamoto: "Preconditioning Method for Heterogeneous Condensate Flows"Proc.5th JSME-KSME Fluids Engineering Conference. 1(CD-ROM). (2002)

S.Yamamoto：“非均相凝结水流的预处理方法”Proc.5th JSME-KSME 流体工程会议。

D.Sato: "Implicit Calculation of Condensate Transonic Flows"Proc 1st Int.Symp.Advanced Fluid Information. 1. 536-541 (2001)

D.Sato：“凝结水跨音速流的隐式计算”Proc 1st Int.Symp.Advanced Fluid Information。

H.Takeda: "Numerical Investigation of Supersonic MPD Viscous Flows with Ionization"JSME Int. J.. 45. 97-101 (2002)

H.Takeda：“超音速 MPD 电离粘性流的数值研究”JSME Int。

山本 悟: "前処理型陰的流束分離スキームとその熱対流問題への応用"日本機械学会論文集B編. 69・678(印刷中). (2003)

Satoru Yamamoto：“预处理隐式磁通分离方案及其在热对流问题中的应用”，日本机械工程师学会会议录，B 版（2003 年）。