Affiliation:
1. ANSYS Fluent India Pvt Ltd., Plot No. 34/1, Pune Infotech Park, MIDC, Hinjewadi, Pune 411057, India e-mail:
Abstract
To predict nucleate boiling, a novel semimechanistic wall boiling model is developed within a mixture multiphase flow framework available in ansys fluent. The mass transfer phenomenon is modeled using an evaporation–condensation model, and enhancement of wall-to-fluid heat transfer due to nucleate boiling is captured using a 1D empirical correlation, modified for 3D computational fluid dynamics (CFD) environment; hence this model can be used for a complex-shaped coolant passage. For a series of operating conditions, the present model is rigorously validated against available experimental data in which a 50% volume mixture of aqueous ethylene glycol was used as coolant. Subsequently, this model is applied to study boiling heat transfer for a typical automobile exhaust gas recirculation (EGR) cooler under a typical condition.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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