Heat Transfer Enhancement and RTD in Pipes with Flow Inversion

R. ZITNY; T. C. T. Luong; P. STRASAK; J. SESTAK

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Heat Transfer Enhancement and RTD in Pipes with Flow Inversion

机译：逆流管道中的传热增强和RTD

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The inversion of streamlines between the centerline and wall region of a pipe improves residence time distribution (RTD) characteristics and heat transfer in laminar flows. Suggested one-parametrical inversion models predict RTD and Nusselt number values for the flow of a Newtonian liquid in a pipe with one or more flow inverters. These models are used for inverter description based upon the principle of Dean's vortices in a local tube bend. Results obtained by CFD programs reveal an optimum inversion effect at Re{sub}φ ≈ 110, where φ is the angle of bend. Model identification using first appearance time and heat transfer enhancement is discussed.

机译：管道中心线和壁区域之间的流线反转可以改善停留时间分布（RTD）特性和层流中的热传递。建议的一参数反演模型可预测具有一个或多个流量逆变器的管道中牛顿液体流量的RTD和Nusselt值。这些模型用于基于局部弯管中的Dean涡流原理对逆变器进行描述。通过CFD程序获得的结果表明，在Re {sub}φ≈110时具有最佳的反演效果，其中φ是弯曲角度。讨论了使用首次出现时间和传热增强的模型识别。

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《Heat Transfer Engineering》 |2004年第4期|p.67-79|共13页
作者
R. ZITNY; T. C. T. Luong; P. STRASAK; J. SESTAK;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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正文语种 eng
中图分类工业用热工设备;
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Heat Transfer Enhancement and RTD in Pipes with Flow Inversion

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