Author/Authors :
YEMENİCİ, Onur Uludağ Üniversitesi - Mühendislik-Mimarlık Fakültesi - Makine Mühendisliği Bölümü, Turkey , FIRATOĞLU, Z. Abidin Harran Üniversitesi - Mühendislik-Mimarlık Fakültesi - Makine Mühendisliği Bölümü, Turkey
Title Of Article :
Heat Transfer Enhancement in Turbulent Flows by Blocked Surfaces
Abstract :
In this study, the heat transfer analyses over flat and blocked surfaces were carried out in turbulent flow under the influence of the block height. A constant-temperature hot wire anemometer was used to the velocity and turbulent intensity measurements, while temperature values were measured by copper-constantan thermocouples. The average Stanton numbers for block heights of 15 and 25 mm were higher than those of flat surface by %38 and %84, respectively. The results showed that the presence of the blocks increased the heat transfer and the enhancement rose with block heights.
NaturalLanguageKeyword :
Blocked surface , Turbulent flow , Heat transfer enhancement.
JournalTitle :
Uludağ University Journal of The Faculty of Engineering
