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.
On Development of a Semimechanistic Wall Boiling Model
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received January 22, 2014; final manuscript received February 18, 2016; published online March 22, 2016. Editor: Portonovo S. Ayyaswamy.
Das, S., and Punekar, H. (March 22, 2016). "On Development of a Semimechanistic Wall Boiling Model." ASME. J. Heat Transfer. June 2016; 138(6): 061501. https://doi.org/10.1115/1.4032833
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