contributor author | D. R. Buttsworth | |
contributor author | T. V. Jones | |
date accessioned | 2017-05-08T23:58:11Z | |
date available | 2017-05-08T23:58:11Z | |
date copyright | July, 1998 | |
date issued | 1998 | |
identifier issn | 0889-504X | |
identifier other | JOTUEI-28666#601_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/121316 | |
description abstract | This paper discusses the operation of a fast-response total temperature probe based on transient thin film heat flux gage technology. The probe utilizes two thin film gages located close to the stagnation point of a hemispherically blunted fused quartz cylinder. Development of the present total temperature probe was motivated by the need for a fast-response device with a high spatial resolution. The diameter of the probe was 2.8 mm and the two films were separated by a distance of less than 1 mm. Measurement of the flow total temperature requires the films to operate at different temperatures. In the present work, the temperature difference was generated using a current pulse (approximately 70 mA with a duration of around 1 s) to heat one of the thin film resistance gages. With this technique, temperature differences between the hot and cold films of around 120 K were achieved. The interpretation of the transient surface temperature measurements is discussed, and the validity and utility of the technique are demonstrated with reference to total temperature and convective heat transfer coefficient measurements in a compressible free jet. The results demonstrate that accurate total temperature and convective heat transfer coefficient measurements with high spatial and temporal resolution can be obtained with the present device. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | A Fast-Response High Spatial Resolution Total Temperature Probe Using a Pulsed Heating Technique | |
type | Journal Paper | |
journal volume | 120 | |
journal issue | 3 | |
journal title | Journal of Turbomachinery | |
identifier doi | 10.1115/1.2841758 | |
journal fristpage | 601 | |
journal lastpage | 607 | |
identifier eissn | 1528-8900 | |
keywords | Temperature | |
keywords | Resolution (Optics) | |
keywords | Probes | |
keywords | Heating | |
keywords | Gages | |
keywords | Thin films | |
keywords | Measurement | |
keywords | Convection | |
keywords | Cylinders | |
keywords | Temperature measurement | |
keywords | Electrical resistance | |
keywords | Flow (Dynamics) | |
keywords | Heat | |
keywords | Heat flux AND Quartz | |
tree | Journal of Turbomachinery:;1998:;volume( 120 ):;issue: 003 | |
contenttype | Fulltext | |