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Experimental investigation of the influence of momentum thickness on the development of a slightly heated plane jet

โœ Scribed by P.R. Suresh; T. Sundararajan; Sarit K. Das

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
396 KB
Volume
35
Category
Article
ISSN
0735-1933

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โœฆ Synopsis

The influence of nozzle selection and consequent impact of momentum thickness is rarely investigated in heated horizontal plane jets. In the present work an experimental study is performed using a two dimensional converging nozzle and then by attaching a channel to the nozzle with air issued at a moderate Reynolds number of 4000 and at an inlet temperature of 60 ยฐC. A hotwire anemometer is used to measure velocity and temperature fields. The ratio of heat to momentum transport is 1.33 for nozzle jets and 1.4 for channel jets. Half widths based on mean excess temperature and velocity is higher for channel jets. The influence of buoyancy is negligible for the present case. But the spread of temperature as a scalar is important in the transport process.

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