广东工业大学学报 ›› 2019, Vol. 36 ›› Issue (06): 105-110.doi: 10.12052/gdutxb.190012

• 综合研究 • 上一篇    

中性大气流动的CFD缩尺模拟方法

江升富, 汪新, 赵冰春   

  1. 广东工业大学 土木与交通工程学院, 广东 广州 510006
  • 收稿日期:2019-01-14 出版日期:2019-11-28 发布日期:2019-11-28
  • 通信作者: 汪新(1962-),男,教授,主要研究方向为计算流体力学、城市微气候.E-mail:xinwang@gdut.edu.cn E-mail:xinwang@gdut.edu.cn
  • 作者简介:江升富(1993-),男,硕士研究生,主要研究方向为计算流体力学.
  • 基金资助:
    国家自然科学基金资助项目（51378128）；广东省自然科学基金资助项目（2015A030313498）

CFD Scaled-down Modelling of Neutral Atmospheric Flow

Jiang Sheng-fu, Wang Xin, Zhao Bing-chun   

  1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2019-01-14 Online:2019-11-28 Published:2019-11-28

HTML

PDF (PC)

2584

摘要： CFD（Computational Fluid Dynamic）缩尺模拟可以有效地降低对计算硬件的依赖性，并提高计算效率.本文利用相似理论推导了中性大气流动的相似流动要求以及对应的边界条件，建立了虚拟流动介质为基础的缩尺方法.通过对一典型住宅小区的CFD足尺模拟和缩尺模拟比较分析，证明所建立的CFD缩尺模拟方法可以真实再现足尺模型的流动形态及具有较好的模拟精度，并可以有效地达到减少计算开销的目的.

关键词: 相似理论, 中性大气流动, 足尺模拟, 缩尺模拟

Abstract: Using the scaled-down model in a CFD (Computational Fluid Dynamic) simulation can deduce the dependence on computational hardware and improve the computational effectiveness. Based on the similarity theory, the method of CFD scaled modelling is proposed for neutral atmospheric flow, including the similarity criteria and corresponding boundary conditions. A virtual flow medium is introduced into the scaled simulation to ensure the requirements of the similarity criterion completely. The proposed method is verified in comparison of the full-scaled modelling with the scale-down one for a typical residential district. It is shown that the scaled-down modelling is of the ability to regenerate the same flow patterns and achieve the accuracy of same order as the full-scaled modeling. Meanwhile, the computational overhead can be reduced effectively.

Key words: similarity theory, neutral atmospheric flow, full-scaled modelling, scaled-down modelling

中图分类号: 

  • O351.2
[1] 陈谟. 如何使用CFD来确定风洞实验模型的缩尺比例——风洞试验模型设计准则从感性到理性的飞跃[J]. 宇航学报, 2007, 28(3):594-597 CHEN M. How to Determine the scale ratio of wind tunnel test models by CFD——a leap in the design standard of wind tunnel test models from the perception to the reason[J]. Journal of Astronautics, 2007, 28(3):594-597
[2] 石启印, 李爱群, 杜东升, 等. 首都机场新塔台模型风洞模拟相似理论分析[J]. 特种结构, 2004, 21(1):47-49 SHI Q Y, LI A Q, DU D S, et al. Wind-induced vibration similarity theory analysis to the model of new toll tower structure on bering airport with aero elastic model test[J]. Special Structures, 2004, 21(1):47-49
[3] 王福军. 计算流体动力学分析——CFD软件原理与应用[M]. 北京:清华大学出版社, 2004.
[4] 张冬兵, 梁枢果, 陈寅, 等. 高层建筑风场的数值模拟和风洞试验结果比较[J]. 武汉理工大学学报, 2011, 33(4):104-108 ZHANG D B, LIANG S G, CHEN Y, et al. Comparison of numerical simulation results with wind tunnel data for wind field of high-rise building[J]. Journal of Wuhan University of Technology, 2011, 33(4):104-108
[5] 郭栋鹏, 闫函, 姚仁太, 等. 复杂建筑物对近场扩散影响的数值与风洞模拟的比较分析[J]. 实验流体力学, 2013, 27(2):56-62 GUO D P, YAN H, YAO R T, et al. A comparion study on numerical and wind-tunnel simulation of flow and dispersion around complex building[J]. Journal of Experiments in Fluid Mechanics, 2013, 27(2):56-62
[6] 邹超. 典型高层建筑风荷载及其影响因素的实验研究[D]. 长沙:中南大学, 2014.
[7] MUSTO M, ROTONDO G. CFD analysis of a realistic reduced-scale modeling equipped with axial jet fan[J]. Fire Safety Journal, 2015, 74:11-24
[8] PROTSENKO V S, DANILOV F I. Application of dimensional analysis and similarity theory for simulation of electrode kinetics described by the marcus-hush-chidsey formalism[J]. Journal of Electroanalytical Chemistry, 2012, 669:50-54
[9] 齐万泉, 汪宗福, 马蔚宇, 等. 相似原理应用于混响室缩比模型的验证分析[J]. 电波科学学报, 2011, 26(1):180-185 QI W Q, WANG Z F, MA W Y, et al. Verification and analysis on similitude principium used in compact model of reverberation chamber[J]. Chinese Journal of Radio Science, 2011, 26(1):180-185
[10] 李新华, 曹伟魏, 唐敏. 相似理论在大型复杂构件有限元分析中的应用[J]. 机械设计与研究, 2013, 29(5):18-20 LI X H, CAO W W, TANG M. The Application of similarity theory in the finite element analysis of complex and large components[J]. Machine Design & Research, 2013, 29(5):18-20
[11] FRISHTER L U. Application of the methods of the theory similarity and dimensional analysis for research the local stress-strain state in the neighborhood of an irregular point of the boundary[J]. Procedia Engineering, 2016, 153:151-156
[12] 胡宇, 黄晨, 蔡宁. 大空间建筑及其相似放大建筑的室内热环境模拟分析[J]. 流体机械, 2012, 40(9):67-71 HU Y, HUANG C, CAI N. Numerical simulation for analyzing thermal environment of a large-scale building and its similar construction[J]. Fluid Machinery, 2012, 40(9):67-71
[13] COSTANTINO A, MUSTO M, ROTONDO G, et al. Numerical analysis for reduced-scale road tunnel model equipped with axial jet fan ventilation system[J]. Energy Procedia, 2014, 45:1146-1154
[14] 陆超, 姜治芳, 王涛. 利用缩比模型CFD数值模拟计算舰船舰面空气流场相似准数的影响探讨[J]. 中国舰船研究, 2008, 3(6):45-48 LU C, JIANG Z F, WANG T. Discussion on comparability of scaled models for CFD numerical simulation for ship airwake[J]. Chinese Journal of Ship Research, 2008, 3(6):45-48
[15] ZHANG X Y, CHEN H D. Numerical study on similarity of plume infrared radiation between reduced-scale solid rocket motors[J]. Chinese journal of aeronautics, 2016, 29(4):924-93
[16] 姚帅. 基于CFD原理的CAARC标准建筑模型的数值模拟分析[D]. 武汉:武汉理工大学, 2015.
[17] 龚晨, 汪新. 城市住宅小区环境大气局部流动特征研究[J]. 广东工业大学学报, 2012, 29(3):103-106 GONG C,WANG X. Research on the characteristics of local atmospheric flow in urban residential areas[J]. Journal of Guangdong University of Technology, 2012, 29(3):103-106
[18] 赵冰春, 汪新, 赖志平. 居住小区布局形式对热环境的影响[J]. 广东工业大学学报, 2016, 33(6):91-95 ZHAO B C,WANG X,LAI Z P. Effects of building layout forms on thermal environment in residential districts[J]. Journal of Guangdong University of Technology, 2016, 33(6):91-95
[1] 曹嘉佳. 直管内流体特性的数值模拟[J]. 广东工业大学学报, 2020, 37(05): 75-81.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
版权所有 © 2017 《广东工业大学学报》编辑部
地址：广州市东风东路729号广东工业大学 邮编：510090
电话：020-37626653,020-37626139,020-37626396
邮箱：xbzrb@gdut.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发