Effect of wall corrugation on local convective heat transfer in coiled tubes

被引：50
作者：
Bozzoli, Fabio [1 ,2 ]
Cattani, Luca [1 ]
Rainieri, Sara [1 ,2 ]
机构：
[1] Univ Parma, Dept Ind Engn, Parco Area Sci 181-A, I-43124 Parma, Italy
[2] Univ Parma, SITEIA PARMA Interdept Ctr, Parco Area Sci 181-A, I-43124 Parma, Italy
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2016年 / 101卷
关键词：
Compound heat transfer enhancement; Helically coiled tube; Corrugated tubes; Inverse Heat Conduction Problem; TRANSFER COEFFICIENT; CONDUCTION PROBLEM; SOURCE RECONSTRUCTION; FLUID TEMPERATURE; FLOW; LAMINAR;
D O I：
10.1016/j.ijheatmasstransfer.2016.04.106
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present paper presents the application of an inverse analysis approach to experimental infrared temperature data with the aim of estimating the local convective heat transfer coefficient for forced convection flow in coiled pipe having corrugated wall. The estimation procedure here adopted is based on the solution of the Inverse Heat Conduction Problem within the wall domain, by adopting the temperature distribution on the external coil wall as input data of the inverse problem: the unwanted noise is filtered out from the infrared temperature maps in order to make feasible the direct calculation of its Laplacian, embedded in the formulation of the Inverse Heat Conduction Problem, in which the convective heat transfer coefficient is regarded to be unknown. The results highlighted the local effects of both wall curvature and of wall corrugation on the convection heat transfer augmentation mechanism. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：76 / 90
页数：15
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