Abstract
An experimental investigation to understand the influence of the impingement surface geometry on the heat transfer from a discretely heated surface to a single round impinging jet is conducted. In this study, heat transfer at the stagnation region of a discretely heated pedestal protruding into an air stream is compared to the heat transfer on a discretely heated flat plate to determine the influence of impingement surface geometry on heat transfer for various Reynolds numbers, jet diameters and jet exit-surface spacings. The round jet issues from a tube of diameter 3.5 mm, 9.5 mm or 21 mm at jet exit-to-surface distances of 2-5 diameters with Re = 10,000 - 30,000. Under all operating conditions, the presence of a protruding pedestal is found to increase heat transfer.
| Original language | English |
|---|---|
| Article number | IMECE2004-59011 |
| Pages (from-to) | 129-133 |
| Number of pages | 5 |
| Journal | American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD |
| Volume | 375 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2004 |
| Externally published | Yes |
| Event | 2004 ASME International Mechanical Engineering Congress and Exposition, IMECE - Anaheim, CA, United States Duration: 13 Nov 2004 → 19 Nov 2004 |