| 入口射流角度对通风方腔内流动的影响 |
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| 引用本文： | 赵明,杨茉,卢玫,王晓辉.入口射流角度对通风方腔内流动的影响[J].上海理工大学学报,2008,30(6). |
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| 作者姓名： | 赵明 杨茉 卢玫 王晓辉 |
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| 作者单位： | 上海理工大学动力工程学院,上海,200093 |
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| 基金项目： | 国家自然科学基金资助项目
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上海市教委科研资助项目
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| 摘 要： | 用数值方法探讨了入口射流角度对顶部对称送风方式的方腔内流动的影响.计算的物理模型为固定宽高比为1,进风角度θ分别取20°,45°,70°,90°,110°,135°及160°.计算结果表明,不同的射流角度对通风方腔内流动的影响是明显的.随进风角度的变化,在不同的控制参数下,方程的解呈现多样的、不稳定的非线性特征,可归结为定常解(稳态解)、周期性振荡解、非周期性振荡解.在选定的计算参数下,当进风角度的变化范围在20°≤θ≤160°时,考虑纯强制对流,θ为135°的流场最先失稳振荡;考虑自然对流的作用,θ为70°的流场最易失稳振荡.
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| 关 键 词： | 方腔 混合对流 数值研究 |
Influence of inlet flow angle on the mixed-convection in a rectangular cavity |
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| ZHAO Ming,YANG Mo,LU Mei,WANG Xiao-hui.Influence of inlet flow angle on the mixed-convection in a rectangular cavity[J].Journal of University of Shanghai For Science and Technology,2008,30(6). |
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| Authors: | ZHAO Ming YANG Mo LU Mei WANG Xiao-hui |
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| Institution: | ZHAO Ming,YANG Mo,LU Mei,WANG Xiao-hui(College of Power Engineering,University of Shanghai for Science , Technology,Shanghai 200093,China) |
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| Abstract: | A numerical study was made on the mixed-convection in a 2D rectangular cavity using a two-dimensional unsteady laminar mathematical model for investigating the influence of the inlet flow angle and the aspect ratio.The SIMPLE(semi-implicit method for pressure-linked equations) method on a staggered grid was adopted here,and the governing differential equations were discretized by the QUICK(quadratic upwind interpolation of covective kinematics) scheme.Numerical calculations were carried out under the air su... |
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| Keywords: | rectangular cavity mixed convection numerical study |
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