서브머지드 단일수분류의 열전달에 관한 실험적 연구
An experimental study of heat transfer in a submerged water jet
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Abstract
An experimental study of heat transfer of submerged water jet impinging normally on a flat plate is presented. Heat transfer measurements obtained with Reverse cone type nozzle(Rcone) were compared to those obtained with Cone type nozzle(Cone) and Square edged type nozzle(Vert) of the same diameter(D=8mm) for different jet velocities in the range of 3～7m/s() and various nozzle-to target spacings(H/D=2～10). The local Nusselt number profiles exhibited a sharp drop for r/D≤0.5 and 2nd, 3rd peaks revealed at r/D=2, 3 respectively, followed by a slower decrease there after. The peaks were weakened with increasing the nozzle-to target spacing and decreasing the jet velocity. The stagnation Nusselt number of the Reverse cone type nozzle was larger than those of the other two nozzles for H/D=2. 10, but Cone type nozzle had the highest value for H/D=4～8. Also average Nusselt number of the Reverse cone type nozzle was higher than those of the other two nozzles at H/D=2～10, except for =7m/s of H/D=6.
참고문헌 (13)
- "Correlating equations for impingement cooling of small heat sources with single circular liquid jets", pp.106~115 (1993)
- "Local heat transfer to impinging liquid jets in the initially laminar", 37(8), pp.1207~1216 (1994)
- "Confined and submerged liquid jet impingement heat transfer", 117, pp.871~877 (1995)
- "Flow field effects on heat transfer in confined jet impingement", 119, pp.630~632 (1997)
- "Impingement heat transfer and recovery effect with submerged jets of large Prandl number liquid-1. Unconfined circular jets", 40(6), pp.1481~1490 (1997)
- "서브머지드 단일 충돌 수분류에 의한 평판상의 열전달에 관한 연구", 3(4), pp.523~531 (2002)
- "원추형 오리피스를 이용한 서브머지드 충돌 수분류의 열전달에 관한 실험적 연구", 4(4), pp.481~488 (2003)
- ""단일수분류 및 수분류군에 의한 열전달(1) -단일수분류-"", 21(9), pp.1105~1114 (1997)
- "Impinging liquid jets on heated surfaces", 1, pp.275~285
- "The effect of nozzle configuration on stagnation region heat transfer enhancement of axisymmetric jet impingement", 43, pp.3497~3509 (2000)
- "Local heat transfer measurements flow elliptic jet impinging on a flat plate using liquid crystal", 37(6), pp.967~976 (1994)
- "Heat and mass transfer between impinging gas jet and solid surfaces", 13
- "Local convective heat transfer coefficients for jets impinging on a plate", 5, pp.293~297 (1974)