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Início - ICHMT DL Ano atual Arquivos Comitê executivo Centro Internacional para Transferência de Calor e Massa


DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.1680
pages 1724-1727

Mohammad Moshfeghi
Multi-Phenomena CFD Engineering Research Center, Baekbeomro 35, Mapo, Seoul, 121-742, Korea

Byung Ha Kang
School of Mechanical Systems Engineering, Kookmin University, Seoul, Korea

Jaisuk Yoo
Department of Mechanical Engineering, Ajou University, Suwon, Korea

Nahmkeon Hur
Multi-Phenomena CFD Engineering Research Center, Baekbeomro 35, Mapo, Seoul, 121-742, Korea; Department of Mechanical Engineering, Sogang University, Sinsoo 1, Mapo, Seoul 121-742, Korea


Any mechanism for changing the mixing process and instability inside the boundary layer and the replacement of hot fluid adjacent to wall surface with cold fluid from bulk flow affects the heat transfer efficiency. Hence, synthetic jet actuators (SJAs) have become popular for heat transfer enhancement projects. In a SJA system, frequency of the injection is an important factor. This paper first studies the effects of frequency of the SJA on a heat transfer enhancement in a 3D rectangular duct. In another part, the effects of hybrid injection are also investigated. The unsteady CFD simulations are carried out using SST-k-ω turbulence model. The comparisons are presented in terms of turbulence intensity, streamline and temperature distribution.

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