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110 results for “Heat transfer”
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Research ArticleOpen accessIn the keywordsSoret and Dufour Effects on Natural Convection Flow Past a Vertical Surface in a Porous Medium with Variable Surface TemperatureHassan A.M. El-ArabawyProblem statement: In this research the researchers studied and made an analysis to the heat and mass transfer characteristics of natural convection about a vertical surface embedded in a saturated porous medium with surface temperature distribution proportional to xλ by taking into account the diffusion-thermo (Dufour) and thermal-diffusion (Soret) effects. Approach: The governing partial differential equations were transformed into a … …Journal of Mathematics and Statistics, Vol. 5, Issue 3 · 30 Sep 2009 · 7,489 accessesView PDFCite
Research ArticleOpen accessIn the keywordsExperimental Study of Flow Structures of Circular Pulsating Air JetRozli Zulkifli, Kamaruzzaman Sopian, Shahrir Abdullah, Mohd Sobri TakriffProblem Statement: Applications of impingement jets in industry for heating and cooling purposes requires a high convective heat transfer coefficient. Numerous studies have been conducted to improve the convective heat transfer coefficient for a steady impinging jet. A pulsating jet has a very high potential in replacing steady jet after it been found able to increase the heat transfer coefficients … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 7,782 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Numerical Estimation of Thermal Contact Resistance in Contacting SurfacesM.H. Shojaefard, K. GoudarziFor some manufacturing processes, the heat transfer between the components, the tools and the environment has an effect on tool-life and the accuracy of the formed component. Consequently, the measurement of Thermal Contact Resistance (TCR) is of increasing interest to researchers and industrial engineers participating in the manufacture of high-precision components. A new transient method and measurement apparatus are used … …American Journal of Applied Sciences, Vol. 5, Issue 11 · 30 Nov 2008 · 7,454 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSimulation Studies on A Cross Flow Plate Fin Heat ExchangerM. Thirumarimurugan, T. Kannadasan, E. RamasamyCompact heat exchangers which were initially developed for the aerospace industries in the 1940s have been considerably improved in the past few years. The main reasons for the good performance of compact heat exchangers are their special design which includes turbulent which in turn use high heat transfer coefficient and resists fouling, and maximum temperature driving force between the hot … …American Journal of Applied Sciences, Vol. 5, Issue 10 · 31 Oct 2008 · 7,241 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPerformance Analysis of Shell and Tube Heat Exchanger Using Miscible SystemM. Thirumarimurugan, T. Kannadasan, E. RamasamyAn experimental investigation on comparative heat transfer study on a solvent and solution were made using 1-1 Shell and Tube Heat Exchanger. Steam is the hot fluid, whereas Water and Acetic acid-Water miscible solution serves as cold fluid. A series of runs were made between steam and water, steam and Acetic acid solution. In addition to, the volume fraction of … …American Journal of Applied Sciences, Vol. 5, Issue 5 · 31 May 2008 · 8,372 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Pulsating Circular Hot Air Jet Frequencies on Local and Average Nusselt NumberRozli Zulkifli, Kamaruzzaman Sopian, Shahrir Abdullah, Mohd Sobri TakriffThe study was carried out to determine the effect of pulsating frequencies on the local and average heat transfer characteristic of a heated circular air jet. The velocity profile of a heated circular pulsating air jet was measured in the first part of the study. The same set-up was used to measure the heat flux of the pulsating jet impinging … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 1 · 31 Mar 2008 · 7,503 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAnalysis Heat Flow Between Seat and Valve of ICEM.H. Shojaefard, A.R. Noorpoor, M. Ghaffarpour, F. MohammadiAn interesting application of system identification method is to investigate the heat transfer from the exhaust valve, especially the valve burning at high temperatures. This study consists of experimental and analytical works. For the experiment, two co-axial rods were used to transfer heat constantly at their contact surfaces. Using the measured temperatures at different locations of the rods and the … …American Journal of Applied Sciences, Vol. 4, Issue 9 · 30 Sep 2007 · 7,208 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Successful Industrial Academic Cooperation, Development of Closed-cell Metallic FoamsSheng-Chung Tzeng, Chu-Wei Lin, Wei-Ping MaThis investigation proposes a successful case of industrial-academic cooperation between the Chienkuo Technology University and J. King Aluminum Inc. This study was proposed by the rotating machinery and heat transfer laboratory. They studied the optimal heat transfer and structural strength of closed-cell aluminum porous material. The cooperation involved the exchange of technical skills; the determination of policies and methods for … …American Journal of Applied Sciences, Vol. 2, Issue 1 · 31 Jan 2005 · 6,892 accessesView PDFCite
Research ArticleOpen accessIn the keywordsFinite Difference Solution for Precooling Process of Fish PackagesK. A. Abbas, F. A. Ansari, A. S. Mokhtar et al.The present work aims at finding an optimized finite difference scheme for the solution of problems involving pure convection heat transfer in slab shaped fresh water fish pieces. A generalized mathematical model was written in dimensionless form and an optimized scheme of the solutions was worked out. A fully explicit finite difference scheme, an implicit finite difference scheme and different … …American Journal of Applied Sciences, Vol. 1, Issue 4 · 31 Dec 2004 · 6,908 accessesView PDFCite
Research ArticleOpen accessIn the keywordsGeometric Optimization of Complex Heat Exchangers using Constructal TechniqueNahum Yustus GodiThe application of microchannel heat exchangers for cooling is documented in this study. Numerical optimization is carried out with the goal of minimising the peak wall temperature in the microchannel heat sink modelled with solid and half hollow square micro fins. A high-density heat flux q'' from a microelectronic device was applied at the bottom wall of the microchannel heat … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 1 · 8 Feb 2022 · 6,317 accessesView PDFCite