A Theoretical Model to Predict Pool Boiling CHF Incorporating Effects of Contact Angle and Orientation-Reference-Cited by-同舟云学术

A Theoretical Model to Predict Pool Boiling CHF Incorporating Effects of Contact Angle and Orientation

Published:2001-04-23 Issue:6 Volume:123 Page:1071-1079
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Kandlikar Satish G.¹

Affiliation:

1. Mechanical Engineering Department, Rochester Institute of Technology, Rochester, NY 14623

Abstract

A theoretical model is developed to describe the hydrodynamic behavior of the vapor-liquid interface of a bubble at the heater surface leading to the initiation of critical heat flux (CHF) condition. The momentum flux resulting from evaporation at the bubble base is identified to be an important parameter. A model based on theoretical considerations is developed for upward-facing surfaces with orientations of 0 deg (horizontal) to 90 deg (vertical). It includes the surface-liquid interaction effects through the dynamic receding contact angle. The CHF in pool boiling for water, refrigerants and cryogenic liquids is correctly predicted by the model, and the parametric trends of CHF with dynamic receding contact angle and subcooling are also well represented.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/123/6/1071/5495956/1071_1.pdf

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