Topic
Fin (extended surface)
About: Fin (extended surface) is a research topic. Over the lifetime, 16110 publications have been published within this topic receiving 142280 citations.
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TL;DR: In this paper, thermal-hydraulic design correlations are developed to predict isothermal f and Nu for in-tube, turbulent flows with twisted-tape inserts, and various mechanisms attributed to twisted tapes are identified.
Abstract: Thermal-hydraulic design correlations are developed to predict isothermal f and Nu for in-tube, turbulent flows with twisted-tape inserts. Experimental data taken for water and ethylene glycol are analyzed, and various mechanisms attributed to twisted tapes are identified. Tube blockage and tape-induced vortex mixing are the dominant phenomena that result in increased heat transfer and pressure drop; for loose- to snug-fitting tapes, the fin effects are insignificant. The limiting case of a straight tape insert correlates with the hydraulic-diameter-based smooth tube equation
438 citations
TL;DR: In this paper, a generalized heat transfer correlation for louver fin geometry is developed with the aid of a large data bank consisting of 91 samples of louvered fin heat exchangers with different geometrical parameters.
436 citations
TL;DR: A review of vortex-induced heat transfer enhancement can be found in this article, where the theoretical basis for the method is discussed and both active and passive implementations are reviewed, and the aim of this survey is to critically review recent progress and to identify research needs in the area of vortexinduced heat exchanger enhancement.
435 citations
TL;DR: In this article, a correlation for fin-and-tube heat exchanger having plain fin geometry is proposed, which can describe 88.6% of the database within ±15%.
417 citations
TL;DR: In this paper, the Optimal Homotopy Asymptotic Method (OHAM) is used to solve nonlinear equations arising in heat transfer, which provides a convenient way to control the convergence of approximation series and adjust convergence regions when necessary.
375 citations