A Theoretical Model for Flow Boiling CHF From Short Concave Heaters-Reference-Cited by-同舟云学术

A Theoretical Model for Flow Boiling CHF From Short Concave Heaters

Published:1995-08-01 Issue:3 Volume:117 Page:698-707
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Galloway J. E.¹,Mudawar I.¹

Affiliation:

1. Boiling and Two-Phase Flow Laboratory, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

Abstract

Experiments were performed to enable the development of a new theoretical model for the enhancement in CHF commonly observed with flow boiling on concave heaters as compared to straight heaters. High-speed video imaging and photomicrography were employed to capture the trigger mechanism for CHF for each type of heater. A wavy vapor layer was observed to engulf the heater surface in each case, permitting liquid access to the surface only in regions where depressions (troughs) in the liquid–vapor interface made contact with the surface. CHF in each case occurred when the pressure force exerted upon the wavy vapor–liquid interface in the contact regions could no longer overcome the momentum of the vapor produced in these regions. Shorter interfacial wavelengths with greater curvature were measured on the curved heater than on the straight heater, promoting a greater pressure force on the wavy interface and a corresponding increase in CHF for the curved heater. A theoretical CHF model is developed from these observations, based upon a new theory for hydrodynamic instability along a curved interface. CHF data are predicted with good accuracy for both heaters.

Publisher

ASME International

Subject

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

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/117/3/698/5509588/698_1.pdf

Reference23 articles.

1. Costello, C. P., and Adams, J. M., 1963, “Burnout Heat Fluxes in Pool Boiling at High Accelerations,” Proc. 2nd Int. Heat Transfer Conf., Boulder, CO, pp. 255–261.

2. Fiori, M. P., and Bergles, A. E., 1970, “Model of Critical Heat Flux in Sub-cooled Flow Boiling,” Proc. 4th Int. Heat Transfer Conference, Vol. 6, Versailles, France, pp. 354–355.

3. Galloway, J. E., and Mudawar, I., 1989, “Boiling Heat Transfer From a Simulated Microelectronic Heat Source to a Dielectric Liquid Film Driven by a Rotating Stirrer,” Heat Transfer in Electronics, ASME HTD-Vol. 111, pp. 66–77.

4. Galloway, J. E., 1991, “Critical Heat Flux Enhancement in the Presence of Stream-wise Curvature,” Ph.D. Thesis, School of Mechanical Engineering, Purdue University, West Lafayette, IN.

5. Galloway J. E. , and MudawarI., 1992, “Critical Heat Flux Enhancement by Means of Liquid Subcooling and Centrifugal Force Induced by Flow Curvature,” Int. J. Heat Mass Transfer, Vol. 35, pp. 1247–1260.

Cited by 10 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Research on prediction of non-uniform heated rod bundle CHF based on subchannel analysis code coupling modified mechanistic model;Annals of Nuclear Energy;2024-09

2. Research on Prediction of Non-Uniform Heated Rod Bundle Chf Based on Subchannel Analysis Code Coupling Modified Mechanistic Model;2023

3. Effects of two-phase inlet quality, mass velocity, flow orientation, and heating perimeter on flow boiling in a rectangular channel: Part 2 – CHF experimental results and model;International Journal of Heat and Mass Transfer;2016-12

4. Assessment of high-heat-flux thermal management schemes;IEEE Transactions on Components and Packaging Technologies;2001-06

5. Critical heat flux in a long, curved channel subjected to concave heating;International Journal of Heat and Mass Transfer;1999-10