Numerical study of pressure drop for a new fibrous media model  

纤维滤料新模型的阻力数值模拟研究(英文)

作　　者：周斌[1] Paolo Tronville Richard Rivers 张小松[1] 

机构地区：[1]东南大学能源与环境学院,南京210096 [2]Department of Energetics,Politecnico di Torino [3]EQS Inc.,Louisville

出　　处：《Journal of Southeast University(English Edition)》2010年第2期311-315,共5页东南大学学报（英文版）

基　　金：China Scholarship Council Postgraduate Scholarship Program(No.2007U20027);the National Natural Science Foundation of China(No.50876020);the National Key Technology R&D Program of China during the 11th Five-Year Plan Period(No.2008BAJ12B02)

摘　　要：An open-source computational fluid dynamics（CFD）code named OpenFOAM is used to validate the flow field characteristics（flow patterns and pressure drop）around a single cylinder.Results show that OpenFOAM is suitable for simulating the low Reynolds number flow and Shaw＇s analytical expression is one of the solutions to Stokes＇ paradox.Experiments are performed on fibrous media and OpenFOAM simulation is carried out using the Tronville-Rivers two-dimensional random fiber model in terms of the characteristics of pressure drop.It is shown that the Kuwabara model predicts the pressure drop of fibrous filter media more accurately than the Happel model,and the experimental pressure drop is between simulated pressure drops with both non-slip and full-slip boundaries on fiber surfaces.利用流体力学开源代码OpenFOAM验证了单圆柱体周围的流体特性(包括流型和阻力),表明Open-FOAM能够用于模拟低Re数流,并发现Shaw的解析解是斯托克斯悖论的一种解.通过对纤维滤料进行试验以及对Tronville-Rivers二维纤维随机分布滤料新模型的阻力特性进行数值模拟,发现Kuwabara模型比Hap-pel模型更能精确预测纤维滤料的阻力,而且试验阻力值介于纤维表面为无滑移和全滑移边界条件下的数值模拟值之间.

关 键 词：fibrous media diameter distribution pressure drop computational fluid dynamics simulation 

分 类 号：TU834.8[建筑科学—供热、供燃气、通风及空调工程]