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- Title
Numerical study of laminar pulsed impinging jet on the metallic foam blocks using the local thermal non-equilibrium model.
- Authors
Hosseinalipour, Seyed Mostafa; Rashidzadeh, Soroush; Moghimi, Mahdi; Esmailpour, Kazem
- Abstract
In this study, thermal performance of an impingement jet with the presence of porous block is numerically investigated. The study is comprised of two main parts. At first, a parametric study is conducted on the steady impingement jet with porous block. Later, the effect of porous block is assessed on the pulsative impingement jet. The effect of different pulsation frequencies and amplitudes is analyzed on the heat transfer between the jet and porous block. In order to model the thermal performance, the local thermal non-equilibrium model is applied to the system. An entropy generation study was also conducted in order to investigate the system's performance from second law of thermodynamics point of view. In addition to the mentioned studies, by utilizing the energy density flux vector, different regimes of heat transfer in various cases are demonstrated and some of the trends obtained in parametric study are justified. The results suggest that porous block can change the Nusselt number distribution on the target plate. A more flattened Nusselt number distribution is observed with the presence of porous blocks. While lower frequencies and amplitudes of pulsation do not affect the thermal performance of the jet, higher ones have a moderate effect on the heat transfer rate of the impinging jet.
- Subjects
JET impingement; METAL foams; NUSSELT number; SECOND law of thermodynamics; HEAT transfer; FOAM; FLUX (Energy)
- Publication
Journal of Thermal Analysis & Calorimetry, 2020, Vol 141, Issue 5, p1859
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-019-09225-1