contributor author | N. Syred | |
contributor author | A. Kozlov | |
contributor author | A. Shchukin | |
contributor author | R. Agachev | |
contributor author | A. Khalatov | |
date accessioned | 2017-05-09T00:06:16Z | |
date available | 2017-05-09T00:06:16Z | |
date copyright | July, 2001 | |
date issued | 2001 | |
identifier issn | 0889-504X | |
identifier other | JOTUEI-28689#609_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/126036 | |
description abstract | Turbulent heat transfer and hydrodynamics have been studied in concavely and convexly curved dimples with Reynolds numbers ranging from 1.3×105 to 3.1×105. The large-scale single hemispherical dimple 50 mm in diameter and 25 mm in depth was arranged on the smooth concave or convex wall of a curved rectangular-shaped passage. The fluid flow and heat transfer measurements, and surface streamline observations were performed within the flow curvature parameter δ**/R ranged from 0.002 to 0.007. The “tornado-like” oscillating vortex bursting periodically out of the dimple was registered in the experiments with a “curved” dimple. This vortex structure is similar to that earlier observed in a “flat” dimple. The surface curvature considerably influences the dimple heat transfer rate in both cases. It enhances heat transfer in a “concave” dimple and reduces it in a “convex” one; however, the more remarkable effect occurred in a concavely curved dimple. The correction factors describing the effect of curvature on average heat transfer in a “curved” dimple have been obtained as a result of experimental study. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Effect of Surface Curvature on Heat Transfer and Hydrodynamics Within a Single Hemispherical Dimple | |
type | Journal Paper | |
journal volume | 123 | |
journal issue | 3 | |
journal title | Journal of Turbomachinery | |
identifier doi | 10.1115/1.1348020 | |
journal fristpage | 609 | |
journal lastpage | 613 | |
identifier eissn | 1528-8900 | |
keywords | Hydrodynamics | |
keywords | Heat transfer | |
keywords | Reynolds number | |
keywords | Flow (Dynamics) AND Measurement | |
tree | Journal of Turbomachinery:;2001:;volume( 123 ):;issue: 003 | |
contenttype | Fulltext | |