0

Full Content is available to subscribers

Subscribe/Learn More  >

Time-Resolved Thermal Surface Flow Structures in Impinging Slot Jet Flows

[+] Author Affiliations
V. Narayanan

Oregon State University, Corvallis, OR

Paper No. HT2003-47493, pp. 585-594; 10 pages
doi:10.1115/HT2003-47493
From:
  • ASME 2003 Heat Transfer Summer Conference
  • Heat Transfer: Volume 1
  • Las Vegas, Nevada, USA, July 21–23, 2003
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-3693-2 | eISBN: 0-7918-3679-7
  • Copyright © 2003 by ASME

abstract

This paper presents low-frequency time-resolved measurements of impingement surface temperature in a turbulent submerged impinging slot jet flow at an exit Reynolds number of 22,500 using infrared (IR) thermography. The nozzle-to-surface spacing was varied from 0.5 to 5 nozzle hydraulic diameters. Time-traces of temperature at specific locations of interest, identified from mean temperature maps, are presented. At a nozzle spacing of 5 hydraulic diameters corresponding to transitional jet impingement, the time traces of surface temperature show mild, but periodically repeating hot and cold streaks, suggesting the presence of near-wall streamwise counter-rotating vortex pairs along the impingement line. At a closer nozzle spacing of 0.5 hydraulic diameter corresponding to impingement of the jet potential core, the temperature streaks at the impingement line could not be detected. Previously unreported distinct thermal streaks are observed at locations corresponding to the local minimum and secondary maximum in heat transfer. Data of rms-averaged temperature fluctuations for the two spacings corroborate well with time trace observations.

Copyright © 2003 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In