| 稳态燃烧室进气过程的大涡模拟 |
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| 引用本文： | 杨萍,解茂昭.稳态燃烧室进气过程的大涡模拟[J].工程热物理学报,2010,31(1). |
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| 作者姓名： | 杨萍 解茂昭 |
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| 作者单位： | 大连理工大学能源与动力学院,辽宁大连,116024 |
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| 基金项目： | 国家基础研究重点规划项目(No.2007CB210002) |
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| 摘 要： | 为精确描述燃烧室进气过程中的流场动态特性,本文应用大涡模拟模型对燃烧室稳态进气过程进行三维瞬态数值模拟研究,着重考察了三种不同亚网格模型(SGS)的性能,这三种SGS模型是:代数Smagorinsky模型、动态Smagorinsky模型和单方程动态动能输运模型(LDKEM)。计算结果表明LEDKEM模型和动态Smagorinsky模型均能较好地反映流场的瞬变性和随机性,前者性能最佳;而代数Smagorinsky模型精度较差,且不能模拟流场的微结构。
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| 关 键 词： | 大涡模拟 进气过程 燃烧室 |
LARGE EDDY SIMULATION OF INTAKE PROCESS IN A STEADY COMBUSTION CHAMBER |
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| YANG Ping,XIE Mao-Zhao.LARGE EDDY SIMULATION OF INTAKE PROCESS IN A STEADY COMBUSTION CHAMBER[J].Journal of Engineering Thermophysics,2010,31(1). |
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| Authors: | YANG Ping XIE Mao-Zhao |
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| Affiliation: | School of Energy and Power Engineering;Dalian University of Technology;Dalian 116024;China |
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| Abstract: | The purpose of this paper is to characterize the dynamic behavior of intake flow through a valve into a steady combustion chamber with Large-eddy simulation turbulence model by using three different approaches,namely,Smagorinsky-model,Dynamic Smagorinsky-model(DSM) and Kinetic-Energy Transport model(LKDEM),for modeling the sub-grid scale turbulence.LES results exhibited a finer flow structure and significantly better agreement with measured data than that of the RANS solutions.It is also shown that both LDK... |
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| Keywords: | large eddy simulation inlet combustion chamber |
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