Numerical models to simulate heat and mass transfer at sharp interfaces in nucleate boiling. (17th November 2018)

• Record Type: Journal Article
• Authors: Perez-Raya, Isaac; Kandlikar, Satish G.
• Is Part Of: Numerical heat transfer. Volume 74:Number 10(2018)
• Page Start: 1583
• Page End: 1610
• Publication Date: 2018-11-17
• Subjects: Heat -- Transmission -- Measurement -- Periodicals; Mass transfer -- Measurement -- Periodicals; Numerical analysis -- Periodicals; 621.4022
• DOI: 10.1080/10407782.2018.1543918
• Languages: English
• ISSNs: 1040-7782

Abstract

Abstract: This work describes a simulation technique for nucleate boiling that considers mass transfer with interfacial temperature gradients and a sharp interface. Interpolation functions estimate the temperature at points located in a direction normal to the interface. A linear temperature profile at the interface interpolates the temperature of the interface-cells. An interface-cells segregation algorithm avoids the interface smearing. Simulations with water at 6.2 K wall superheat show good agreement with the available experimental data on bubble growth rate. Results reveal large heat transfer coefficients over a 200 μm region near the interface. Analysis of the wall shear stress indicates an influence region around the bubble base of two-times the departure bubble diameter.