Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
659685 | International Journal of Heat and Mass Transfer | 2011 | 9 Pages |
Abstract
Whereas the heat transfer mechanisms in steady impinging jets are well understood, the available knowledge of heat transfer to impinging synthetic jets remains inconsistent. This paper provides an objective comparison of the stagnation point heat transfer performance of axisymmetric impinging synthetic jets versus established steady jet correlations. Furthermore, a general correlation for the stagnation point Nusselt number is proposed including the effect of all appropriate scaling parameters: Reynolds number (500 ⩽ Re ⩽ 1500), jet-to-surface spacing (2 ⩽ H/D ⩽ 16) and stroke length (2 ⩽ L0/D ⩽ 40). Based on the ratio of stroke length to jet-to-surface spacing L0/H, four heat transfer regimes are identified.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Tim Persoons, Alan McGuinn, Darina B. Murray,