A Unified 3D Numerical Model for Boiling Curve in a Temperature Controlled Mode

[+] Author and Article Information
Deepak Garg

University of California - Los Angeles, 420 Westwood Plaza, Los Angeles

Dr. Vijay K. Dhir

University of California - Los Angeles, 420 Westwood Plaza, Los Angeles

1Corresponding author.

ASME doi:10.1115/1.4041798 History: Received September 15, 2017; Revised September 17, 2018


In the present study level set method is used to simulate the entire boiling curve in a temperature controlled mode spanning all the three regimes viz. nucleate, transition and film boiling with a unified numerical model supplemented with correlations specifying nucleation site density and waiting time between successive nucleations. In order to improve the performance of the code parallel computing has also been implemented. Vapor evolution process along with temporal and spatial averaged wall heat flux and wall void fraction are computed for a uniform wall superheat case. Wall void fraction is found to increase with increase in wall superheat non linearly as different regimes of boiling were traversed. Energy partitioning from wall into liquid, interface and microlayer has also been examined where it is found that as the wall void fraction increases the percent energy going into liquid decreases while the microlayer contribution peaks around CHF. Numerical simulations are carried out in 3D with water as test liquid and contact angle of 38°.

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