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矩形通道高宽比对单相层流特性的影响

幸奠川 阎昌琪 王畅 孙立成

幸奠川, 阎昌琪, 王畅, 孙立成. 矩形通道高宽比对单相层流特性的影响[J]. 力学学报, 2013, 45(3): 331-336. doi: 10.6052/0459-1879-12-246
引用本文: 幸奠川, 阎昌琪, 王畅, 孙立成. 矩形通道高宽比对单相层流特性的影响[J]. 力学学报, 2013, 45(3): 331-336. doi: 10.6052/0459-1879-12-246
Xing Dianchuan, Yan Changqi, Wang Chang, Sun Licheng. EFFECTS OF ASPECT RATIO OF RECTANGULAR CHANNEL ON CHARACTERISTICS OF SINGLE-PHASE LAMINAR FLOW[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(3): 331-336. doi: 10.6052/0459-1879-12-246
Citation: Xing Dianchuan, Yan Changqi, Wang Chang, Sun Licheng. EFFECTS OF ASPECT RATIO OF RECTANGULAR CHANNEL ON CHARACTERISTICS OF SINGLE-PHASE LAMINAR FLOW[J]. Chinese Journal of Theoretical and Applied Mechanics, 2013, 45(3): 331-336. doi: 10.6052/0459-1879-12-246

矩形通道高宽比对单相层流特性的影响

doi: 10.6052/0459-1879-12-246
基金项目: 国家自然科学基金资助项目(11175050,51076034).
详细信息
    通讯作者:

    幸奠川,博士研究生,主要研究方向:核反应堆热工水力学及气液两相流阻力.E-mail:spiderxdc@126.com

  • 中图分类号: TL334

EFFECTS OF ASPECT RATIO OF RECTANGULAR CHANNEL ON CHARACTERISTICS OF SINGLE-PHASE LAMINAR FLOW

Funds: The project was supported by the National Natural Science Foundation of China (11175050, 51076034).
  • 摘要: 通过分析壁面切应力,比较了不同高宽比矩形通道宽边和窄边壁面摩擦阻力特性. 结果表明宽边摩擦阻力随高宽比的减小而急剧增加;窄边摩擦阻力变化趋势与宽边相反,但变化幅度比宽边小;总摩擦阻力随高宽比的减小而增大. 宽边摩擦阻力占总摩擦阻力的份额随高宽比的增加而减小,且高宽比越大,变化速率越慢. 高宽比对窄边局部切应力的影响很小,对宽边局部切应力的大小和分布形状均有明显影响. 采用能量梯度法,对不同高宽比矩形通道内单相层流-湍流转捩雷诺数进行求解,并将理论计算结果整理成多项式,其预测值和实验值有很好的一致性.

     

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出版历程
  • 收稿日期:  2012-09-10
  • 修回日期:  2012-12-17
  • 刊出日期:  2013-05-18

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