Relationship between the recovery factor and the viscous dissipation in a confined, impinging, circular jet of high-Prandtl number liquid
✍ Scribed by De-Yu Li; Zeng-Yuan Guo; Chong-Fang Ma
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 453 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0142-727X
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✦ Synopsis
The radial distribution of the recovery factor for a confined impinging jet of high-Prandtl number liquid is investigated by numerical approach with emphasis on its physical mechanism. The recovery factor is determined by the viscous dissipation and Prandtl number. Unlike the case of the gas jet impingement, the ree, overy factor in the region close to the stagnation point can be much larger than unity, while the recovery factor at the stagnation point approaches zero. The dependence of the recovery factor on the nozzle exit velocity profile, the jet Reynolds number, and the nozzle-to-plate spacing is examined.