The accuracy and parametric sensitivity of algebraic models for turbulent flow and convection

Stuart W. Churchill; Bo Yu; Yasuo Kawaguchi

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The accuracy and parametric sensitivity of algebraic models for turbulent flow and convection

机译：湍流和对流的代数模型的精度和参数敏感性

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Predictions of turbulent flow and convection in round tubes, channels and concentric circular annuli based on a correlating equation for the fraction of the shear stress due to turbulence have previously been shown to be within the scatter of the best experimental data. However, the sufficiency of this agreement has been questioned because of the scatter and limitations in scope of that data. As a supplementary test, the sensitivity of the predictions to each of the numerical empiricisms and arbitrary functions of the model has been investigated. On the whole, the uncertainties in these values and functions are not found to influence the predictions significantly.

机译：以前已经证明，基于湍流引起的切应力的比例的相关方程，可以预测圆形管，通道和同心圆形环空中的湍流和对流，这在最佳实验数据的分散范围内。但是，由于该数据的分散性和局限性，该协议的充分性受到了质疑。作为补充测试，研究了预测对模型的每个数值经验和任意函数的敏感性。总体而言，未发现这些值和函数的不确定性会显着影响预测。

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来源
《International Journal of Heat and Mass Transfer》 |2005年第26期|p.5488-5503|共16页
作者
Stuart W. Churchill; Bo Yu; Yasuo Kawaguchi;
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作者单位

Department of Chemical and Biomolecular Engineering, University of Pennsylvania, 311A Towne Building, 220 South 33rd Street, Philadelphia, PA 19104, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
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3. Computation of turbulent natural convection with the elliptic-blending differential and algebraic flux models [J] . Choi Seok-Ki, Han Ji-Woong, Kim Seong-O, Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology . 2017,第1a6期

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7. Numerical analysis of turbulent flow in a curved tube by a combination of the k-.EPSILON. model and the algebraic turbulent stress model. [O] . Yoshiyuki AOYAMA, Kunio HIJIKATA, Kozo FUTAGAMI 1990

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The accuracy and parametric sensitivity of algebraic models for turbulent flow and convection

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