Heat-transfer characteristics of a two-dimensional model of a parallel louver fin
1990; Wiley; Volume: 19; Issue: 7 Linguagem: Inglês
ISSN
2688-4542
AutoresKanji SUZUKI, Atsuo Nishihara, Tsutomu Hayashi, Matthew J. SCHUERGER, Masanori Hayashi,
Tópico(s)Heat Transfer Mechanisms
ResumoThe interruption of a fin surface causes renewed boundary layers starting from the leading edge of each interrupted fin. This results in a boundary layer thinner in average over the entire length of the fin surfaces compared to the uninterrupted case. Therefore a higher degree of interruption is normally expected to lead to a higher degree of heat transfer. However, actually to realize this expectation, care must be taken of the geometrical allocation of each fin in an array so as to avoid other undesirable effects relating to the fin geometry. Numerical computation of flow and thermal fields has been made for two-dimensional models of two types of parallel louver fins and an offset fin. In this paper heat-transfer characteristics of parallel louver fins are discussed in comparison with those of an offset fin based upon the results obtained from the numerical computation. It is demonstrated that a certain type of parallel louver fin has a higher heat-transfer performance than that obtained with an offset fin.
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