| Experimental and Numerical Simulations of Flow and Heat Transfer in Heat Exchanger Elements Using Liquid Crystal Thermography |
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| 引用本文： | Jan STASIEK,Michele CIOFALO,Maciej WIERZBOWSKI. Experimental and Numerical Simulations of Flow and Heat Transfer in Heat Exchanger Elements Using Liquid Crystal Thermography[J]. 热科学学报(英文版), 2004, 13(2): 133-137. DOI: 10.1007/s11630-004-0021-8 |
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| 作者姓名： | Jan STASIEK Michele CIOFALO Maciej WIERZBOWSKI |
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| 作者单位： | Heat Technology Dept.，Gdansk Univ. of Technology，Narutowicza 11/12，80-952 Gdansk，Poland，University of Palermo，Dipartimento Ingeneria Nucleare，Viale delle Scienze，I-90128 Palermo，Italy，Heat Technology Dept.，Gdansk Univ. of Technology，Narutowicza 11/12，80-952 Gdansk，Poland |
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| 摘 要： | Experimental and numerical investigation of heat transfer and fluid flow were conducted for classic heat exchanger elements (flat plate with fin-tubes in-line, staggered and with vortex generators) and corrugated-undulated ducts under transitional and weakly turbulent conditions.The dependence of average heat transfer and pressure drop on Reynolds number and geometrical parameters was investigated. Distributions of local heat transfer coefficient were obtained by using liquid crystal thermography and surface-averaged values were computed. Three-dimensional numerical simulations were conducted by a finite-volume method using a low-Reynolds number k-e model under the assumption of fully developed flow. Computed flow fields provided otherwise inaccessible information on the flow patterns and the mechanisms of heat transfer enhancement.
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| 收稿时间： | 2005-03-09 |
Experimental and numerical simulations of flow and heat transfer in heat exchanger elements using liquid crystal thermography |
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| Jan Stasiek,Michele Ciofalo,Maciej Wierzbowski. Experimental and numerical simulations of flow and heat transfer in heat exchanger elements using liquid crystal thermography[J]. Journal of Thermal Science, 2004, 13(2): 133-137. DOI: 10.1007/s11630-004-0021-8 |
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| Authors: | Jan Stasiek Michele Ciofalo Maciej Wierzbowski |
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| Affiliation: | (1) Heat Technology Dept., Gdansk Univ. of Technology, Narutowicza 11/12, 80-952 Gdansk, Poland;(2) Dipartimento Ingeneria Nucleare, Viale delle Scienze, University of Palermo, I-90128 Palermo, Italy |
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| Abstract: | Experimental and numerical investigation of heat transfer and fluid flow were conducted for classic heat exchanger elements (flat plate with fin-tubes in-line, staggered and with vortex generators) and corrugated-undulated ducts under transitional and weakly turbulent conditions.The dependence of average heat transfer and pressure drop on Reynolds number and geometrical parameters was investigated. Distributions of local heat transfer coefficient were obtained by using liquid crystal thermography and surface-averaged values were computed. Three-dimensional numerical simulations were conducted by a finite-volume method using a low-Reynolds number k-e model under the assumption of fully developed flow. Computed flow fields provided otherwise inaccessible information on the flow patterns and the mechanisms of heat transfer enhancement. |
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| Keywords: | liquid crystal thermography heat transfer enhancement. |
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