ESDU 96031 D-2010
结构响应涡旋脱落的计算机程序 圆形或多边形横截面结构 第1部分 Microsoft Excel 模块

Computer programs for response of structures to vortex shedding Structures of circular or polygonal cross section Part 1. Microsoft Excel module


 

 

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标准号
ESDU 96031 D-2010
发布
2010年
发布单位
ESDU - Engineering Sciences Data Unit
 
 
适用范围
INTRODUCTION ESDU 960306 describes the nature of the lateral response to vortex shedding of structures of circular cross section. It then develops a method for calculation of this response together with the data required for its implementation. This method takes account also of the lateral response to buffeting by across-wind atmospheric turbulence components@ using the methods of ESDU 890495. Comparisons of predictions with both model and full-scale measurements and a discussion of methods of reducing the response to vortex shedding are also included in ESDU 96030. The calculation method is complex and it can realistically be implemented only through a computer program. A program is currently available as a Microsoft Excel* spreadsheet Module. This Item gives guidance on the use of the Excel Module. Section 2 considers installation and running? of the Module. Section 3 describes the input data required and Section 4 the output produced by the program. Section 5 describes a set of Worked Examples. Appendix A provides some guidance on values for input data. The method can be applied for the following structure types and flow conditions: ? parallel-sided@ tapered and stepped structures@ ? circular or regular polygon cross section (8 or more sides)@ ? smooth or rough surfaces (for structures with ancillaries such as ladders attached@ the method applies only if the ancillary is entirely within the main structure wake)@ ? cantilevered structures and structures between end fixings@ ? vertical@ horizontal or inclined structures@ ? structures with or without strakes@ ? uniform or shear flow@ ? smooth or turbulent flow@ ? normal or yawed flow (a yawed wind affects the response only if the structure is not vertical)@ ?natural wind (full scale)@ simulated wind (wind tunnel)@ ? internal flows in which the structure causes a blockage of less than 10%. Example applications include stacks (chimneys) and process plant towers@ lighting standards and elements of lattice structures. Several worked examples are described in Section 5 and some guidance on sources of input data is given in Appendix A. * Microsoft and Excel are trademarks of the Microsoft Corporation ? Some familiarity with the Microsoft Windows operating system and the Microsoft Excel spreadsheet program is assumed. For further guidance on these topics@ consult the appropriate Manuals or Help Files.

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