Validation of the discrete element roughness method for predicting heat transfer on rough surfaces

Hanson David R.; Kinzel Michael P.; McClain Stephen T.

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Validation of the discrete element roughness method for predicting heat transfer on rough surfaces

机译：离散元素粗糙度法预测粗糙表面传热的验证

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The Discrete Element Roughness Method (DERM) is evaluated as an engineering solution to the problem of convective heat transfer on rough surfaces. As part of the present work, DERM is incorporated into a general purpose compressible CFD code and explored as a way of modeling the sub-resolved roughness scales. In addition, DERM-model inputs are evaluated in detail and developed to represent sand-grain roughness (SGR). The results display good agreement in a number of validation cases. The overall results clearly indicate that DERM has potential to improve heat transfer predictions beyond the capability of SGR models, while only slightly increasing the computation time. (C) 2019 Elsevier Ltd. All rights reserved.

机译：离散元素粗糙度法（DERM）作为对粗糙表面对流传热问题的工程解决方案进行了评估。作为当前工作的一部分，DERM被合并到通用的可压缩CFD代码中，并作为建模次分辨粗糙度标度的一种方式进行了探索。此外，将对DERM模型输入进行详细评估，并开发出代表沙粒粗糙度（SGR）的模型。在许多验证案例中，结果显示出良好的一致性。总体结果清楚地表明，DERM有潜力改善传热预测，而超出SGR模型的能力，而只是稍微增加了计算时间。（C）2019 Elsevier Ltd.保留所有权利。

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来源
《International Journal of Heat and Mass Transfer》 |2019年第6期|1217-1232|共16页
作者
Hanson David R.; Kinzel Michael P.; McClain Stephen T.;
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作者单位

Penn State Univ, Dept Aerosp Engn, 229 Hammond, University Pk, PA 16802 USA|Penn State Univ, Appl Res Lab, 214 GTWT BIg, University Pk, PA 16802 USA;

Penn State Univ, Dept Aerosp Engn, 229 Hammond, University Pk, PA 16802 USA|Penn State Univ, Appl Res Lab, 214 GTWT BIg, University Pk, PA 16802 USA|Univ Cent Florida, Mech & Aerosp Engn, ENGR 1,Room 353,12760 Pegasus Blvd, Orlando, FL 32816 USA;

Balyor Univ, Mech Engn Dept, One Bear Pl 97356, Waco, DC 76798 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
关键词
Large-scale roughness; Heat transfer; CFD;

机译：大尺度粗糙度;传热;CFD;

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Validation of the discrete element roughness method for predicting heat transfer on rough surfaces

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