contributor author | S. Baldauf | |
contributor author | A. Schulz | |
contributor author | S. Wittig | |
date accessioned | 2017-05-09T00:06:13Z | |
date available | 2017-05-09T00:06:13Z | |
date copyright | October, 2001 | |
date issued | 2001 | |
identifier issn | 0889-504X | |
identifier other | JOTUEI-28692#758_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/126005 | |
description abstract | Local adiabatic film cooling effectiveness on a flat plate surface downstream a row of cylindrical holes was investigated. Geometric parameters such as blowing angle and hole pitch, as well as the flow parameters blowing rate and density ratio, were varied in a wide range emphasizing engine relevant conditions. IR thermography was used to perform local measurements of the surface temperature field. A spatial resolution of up to seven data points per hole diameter extending to 80 hole diameters downstream of the ejection location was achieved. Since all technical wall materials have a finite thermoconductivity, a procedure for correcting the measured surface temperature data based on a Finite Element analysis was developed. Heat loss over the back and remnant heat flux within the test plate in lateral and streamwise directions were taken into account. The local effectiveness patterns obtained are systematically analyzed to quantify the influence of the various parameters. As a result, a detailed description of the characteristics of local adiabatic film cooling effectiveness is given. Furthermore, the locally resolved experimental results can serve as a data base for the validation of CFD codes predicting discrete hole film cooling. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | High-Resolution Measurements of Local Effectiveness From Discrete Hole Film Cooling | |
type | Journal Paper | |
journal volume | 123 | |
journal issue | 4 | |
journal title | Journal of Turbomachinery | |
identifier doi | 10.1115/1.1371778 | |
journal fristpage | 758 | |
journal lastpage | 765 | |
identifier eissn | 1528-8900 | |
keywords | Flow (Dynamics) | |
keywords | Temperature | |
keywords | Cooling | |
keywords | Measurement | |
keywords | Coolants | |
keywords | Resolution (Optics) | |
keywords | Density | |
keywords | Jets | |
keywords | Heat flux | |
keywords | Momentum AND Turbulence | |
tree | Journal of Turbomachinery:;2001:;volume( 123 ):;issue: 004 | |
contenttype | Fulltext | |