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Heat Transfer Research

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ISSN Печать: 1064-2285

ISSN Онлайн: 2162-6561

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NUMERICAL SIMULATION AND OPTIMIZATION OF CONVECTIVE HEAT TRANSFER AND PRESSURE DROP IN CORRUGATED TUBES

Том 43, Выпуск 6, 2012, pp. 527-544
DOI: 10.1615/HeatTransRes.2012005454
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Краткое описание

The fluid flow and heat transfer inside corrugated tubes have been studied numerically using the JL (Jones and Lauder, 1973) low-Re k−ε turbulence model. The simulated results agree well with the experimental results. Numerical calculation results widen the Reynolds number range of the fluid flow and heat transfer correlation for corrugated tubes. It is found that the tendency of the friction coefficient to variation with the Reynolds number for the corrugated tubes follows the exponential law in a wider Reynolds number range. Effects of different ripple heights and ripple spacings on fluid flow and heat transfer are investigated, and comprehensive evaluation is made for the performance of the model parameters. The results show that the effects of ripple height on flow and heat transfer inside corrugated tubes are more significant than those of ripple spacing. The optimized calculation and analysis are performed; it is found that the enhancement of heat transfer in corrugated tubes could be realized only at high Reynolds numbers, there exists an optimal Reynolds number range (10,000 < Re < 12,000) where the heat transfer factors of η reach the peak, hence, the heat transfer and fluid flow in corrugated tubes are optimal.

ЦИТИРОВАНО В
  1. Kareem Zaid S., Abdullah Shahrir, Lazim Tholudin M., Mohd Jaafar M.N., Abdul Wahid Ammar F., Heat transfer enhancement in three-start spirally corrugated tube: Experimental and numerical study, Chemical Engineering Science, 134, 2015. Crossref

  2. Kareem Zaid S., Mohd Jaafar M.N., Lazim Tholudin M., Abdullah Shahrir, Abdulwahid Ammar F., Passive heat transfer enhancement review in corrugation, Experimental Thermal and Fluid Science, 68, 2015. Crossref

  3. Promthaisong P., Jedsadaratanachai W., Eiamsa-ard S., 3D Numerical study on the flow topology and heat transfer characteristics of turbulent forced convection in spirally corrugated tube, Numerical Heat Transfer, Part A: Applications, 69, 6, 2016. Crossref

  4. Balla Hyder H., Enhancement of heat transfer in six-start spirally corrugated tubes, Case Studies in Thermal Engineering, 9, 2017. Crossref

  5. Yu Jiawen, Chen Jie, Mi Xiaoguang, Jiang Yiqiang, Fan Xiaozhou, Zhu Zuchao, Study on flow and heat transfer characteristics for propane in twisted oval and the two-start twisted helically wound tube, Advances in Mechanical Engineering, 13, 12, 2021. Crossref

  6. Al‐Obaidi Ahmed Ramadhan, Alhamid Jassim, Saleh Qasim, Analysis on flow structure and improvement of heat transfer in 3D circular tube with varying axial groove turbulator configurations, Heat Transfer, 50, 7, 2021. Crossref

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