半开敞筒壳网架数值风洞研究  

Numerical Wind Tunnel Study of Semi-Open Silo Shell Grids

作　　者：武靖怡 王孟鸿 王世方 WU Jingyi;WANG Menghong;WANG Shifang(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044;China Academy of Building Research,Beijing 100020)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]中国建筑科学研究院有限公司,北京100020

出　　处：《北京建筑大学学报》2024年第1期84-92,共9页Journal of Beijing University of Civil Engineering and Architecture

基　　金：国家自然科学基金项目(51578038)。

摘　　要：大型筒壳网架大量运用于电厂等行业的储煤料棚中,根据工艺的需要端部会进行开洞,针对该类半开敞结构的静风效应,运用FLUENT的风工程计算功能进行数值风洞分析,基于二次开发的STADS和FLUENT的接口程序,通过菜单操作和参数控制,完成模型转换和风压的自动读取及加载,优化了程序的运行速度。以上部开敞的孟加拉某干煤棚和下部开敞的印度某钢厂筒壳网架为研究对象,考虑内外风压的共同作用,给出了不同风向角的风压系数以及风速矢量图。根据风压分布规律和风压相似分区准则,给出了上、下半开敞筒壳网架不同分区的内、外风载体型系数,其计算结果可以为该类半开敞结构的抗风设计提供参考。Large silo shell grids are used in a large number of coal storage sheds in power plants and other industries,where holes are cut in the ends as required by the process.Numerical wind tunnel analysis for the static wind effects of these semi-open structures are carried out by using the wind engineering calculation function of FLUENT.Based on the secondary development of the STADS and FLUENT interface program,the model conversion and the automatic reading and loading of wind pressure are completed through menu operation and parameter control,and the running speed of the program is optimized.With a dry coal shed in Bangladesh with an open upper section and a steel mill in India with an open lower section as research subjects,the wind pressure coefficients and wind speed vectors for different wind angles are given considering the combined effect of internal and external wind pressure.According to the wind pressure distribution law and the wind pressure similar partitioning criterion,the internal and external wind pressure partitioning body type coefficients of the upper and lower semi-open silo shell grids are provided,and the calculation results can be provided as reference for the structural design of similar structural projects.

关 键 词：半开敞筒壳 数值风洞 风压系数 分块体型系数 

分 类 号：TU333[建筑科学—结构工程]