Enhanced impingement heat transfer using a Self-Oscillating Jet Impingement Nozzle array /
1580, 890, 625, and 470 W/M2 K, for S/D of 3, 6, 14, 21, and
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 1580, 890, 625, and 470 W/M2 K, for S/D of 3, 6, 14, 21, and 18, respectively. Each S/D value correspond to the highly, 25, respectively. The maximum local heat transfer values 3, 8, 9, 10, 16 and 24 at H/D of 4. Each fell within the 350 W/m' K, at S/D of 3, 8, 9, 10, 16, and 24, respectively. A simple modification to an in-line jet (ILJ) has been proven addition of a collar over the nozzle exit. When extended to An arrayto-surface spacing of 4 diameters was found to be the average heat transfer coefficients and Nusselt numbers were coefficients were determined to be 790, 850, 665, 490, and coefficientsof 1030, 660, 470, and 345 W/m' K at nozzle determined. The research involved two 0.635 cm inside diameter SOJIN nozzles. The study consisted of acoustic distance. extensions were found to be 3.6 mm for the 60,000 and 100,000 following regions: 3 highly; 8, 9, 10 semi; 16 weakly; and 24 interactive regions. The optimum first stage collar laboratory's ambient air. An infrared camera was used to measure the temperature distribution of the impingement measurements and heat transfer testing conducted at Reynolds modified impinging jet nozzle has been labeled the Self- non-interactive. The average surface heat transfer numbers of 60,000, 100,000, and 140,000. Infrared imaging optimum height for heat transfer purposes. The 60,000 Oscillating Jet Impingement Nozzle (SOJIN). The experiments Reynolds number produced average surface heat transfer Reynolds numbers, and 4.1 mm for the 140,000 Reynolds number. S/D value investigated with a Reynolds number of 100,000 were semi, weakly, and non interactive regions, respectively. The separation distance-to-diameter ratios, S/D,of 3, 8, 13, and showed small changes with respect to nozzle separation standing wave and flow oscillations at the nozzle exit. The surface under various operating conditions. Local and The 140,000 produced the highest heat transfer coefficients. The average surface heat transfer coefficients were 2030, the proper length, the collar will create an acoustic The transport properties of the ILJ were enhanced by the to significantly increase its heat transfer capabilities. was used to identify highly, semi, weakly, and non- were conducted utilizing air jets submerged in the |
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| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | xvi, 128 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |