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三维混合层的直接数值模拟和实验验证
引用本文:罗坤,刘小云,樊建人,岑可法.三维混合层的直接数值模拟和实验验证[J].中国电机工程学报,2004,24(3):183-186.
作者姓名:罗坤  刘小云  樊建人  岑可法
作者单位:能源洁净利用与环境工程教育部重点实验室,浙江大学热能工程研究所,浙江,杭州,310027
基金项目:国家自然科学基金,国家重点基础研究发展计划(973计划)
摘    要:为了验证直接数值模拟三维中低流动雷诺数湍流的正确性和可靠性,该文采用拟谱方法对三维平面混合层流场进行了直接数值模拟,并将数值模拟得到的结果与Lasheras等的平面混合层经典实验结果进行了对比.定量比较了流场不同断面的流向速度平均值、脉动强度、混合层的动量厚度及涡量厚度等流动量.结果表明,直接数值模拟的结果与实验结果吻合良好,证明了直接数值模拟中低三维混合层的正确性和有效性,为扩大直接数值模拟的应用打下了基础.

关 键 词:直接数值模拟  实验验证  三维混合层  速度剖面  动量厚度
文章编号:0258-8013(2004)03-0183-04
修稿时间:2003年8月12日

DIRECT NUMERICAL SIMULATION AND EXPERIMENTAL VERIFICATION OF THE THREE-DIMENSIONAL MIXING LAYER
LUO Kun,LIU Xiao-yun,FAN Jian-ren,CEN Ke-fa.DIRECT NUMERICAL SIMULATION AND EXPERIMENTAL VERIFICATION OF THE THREE-DIMENSIONAL MIXING LAYER[J].Proceedings of the CSEE,2004,24(3):183-186.
Authors:LUO Kun  LIU Xiao-yun  FAN Jian-ren  CEN Ke-fa
Abstract:In order to check the correctness and reliability of direct numerical simulation of the three-dimensional turbulence with the moderate or low flow Reynolds number, this paper adopts the pseudospectral method to direct numerically simulate(DNS) the three-dimensional plane mixing layer. The DNS results are compared with the classic experimental results of Lasheras et al on the plane mixing layer. The streamwise mean velocity profiles, the longitudinal velocity fluctuation profiles, the momentum thickness and the vorticity thickness obtained by DNS are mulually contrasted quantitatively. Consequently, the DNS results are in good agreement with the experimental ones. It proves that the DNS of three-dimensional mixing layer is correct and reliable, that lays a foundation for extending the applications of DNS.
Keywords:Direct numerical simulation  Experimental  verification  Three-dimensional mixing layer  Velocity profiles  Momentum thickness
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