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  1. Frontiers of Energy and Power Engineering in China
  2. Frontiers of Energy and Power Engineering in China : Volume 5
  3. Frontiers of Energy and Power Engineering in China : Volume 5, Issue 3, September 2011
  4. Nucleate boiling in two types of vertical narrow channels
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Frontiers of Energy and Power Engineering in China : Volume 11
Frontiers of Energy and Power Engineering in China : Volume 10
Frontiers of Energy and Power Engineering in China : Volume 9
Frontiers of Energy and Power Engineering in China : Volume 8
Frontiers of Energy and Power Engineering in China : Volume 7
Frontiers of Energy and Power Engineering in China : Volume 6
Frontiers of Energy and Power Engineering in China : Volume 5
Frontiers of Energy and Power Engineering in China : Volume 5, Issue 4, December 2011
Frontiers of Energy and Power Engineering in China : Volume 5, Issue 3, September 2011
Dynamic mechanism for the decline of China’s energy intensity during the 11th FYP (Five-Year Plan)
Nucleate boiling in two types of vertical narrow channels
Technology for the preparation and application of cermet coatings and claddings in thermal power plants
A two-stage deep freezing chemisorption cycle driven by low-temperature heat source
Micro/nanofluidics-enabled energy conversion and its implemented devices
Numerical simulation of a new hollow stationary dehumidity blade in last stage of steam turbine
Assessment of wind energy potential in Gaza Strip
Computer modeling of crystal growth of silicon for solar cells
Imaging studies of in-cylinder HCCI combustion
Emission components characteristics of a bi-fuel vehicle at idling condition
Biomass to dimethyl ether by gasification/synthesis technology—an alternative biofuel production route
Investigation of Cu leaching from municipal solid waste incinerator bottom ash with a comprehensive approach
Frontiers of Energy and Power Engineering in China : Volume 5, Issue 2, June 2011
Frontiers of Energy and Power Engineering in China : Volume 5, Issue 1, March 2011
Frontiers of Energy and Power Engineering in China : Volume 4
Frontiers of Energy and Power Engineering in China : Volume 3
Frontiers of Energy and Power Engineering in China : Volume 2
Frontiers of Energy and Power Engineering in China : Volume 1

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Nucleate boiling in two types of vertical narrow channels

Content Provider Springer Nature Link
Author Guo, Lei Zhang, Shusheng Cheng, Lin
Copyright Year 2010
Abstract To explore the mechanism of boiling bubble dynamics in narrow channels, we investigate 2-mm wide Iand Z-shaped channels. The influence of wall contact angle on bubble generation and growth is studied using numerical simulation. The relationships between different channel shapes and the pressure drop are also examined, taking into account the effects of gravity, surface tension, and wall adhesion. The wall contact angle imposes considerable influence over the morphology of bubbles. The smaller the wall contact angle, the rounder the bubbles, and the less time the bubbles take to depart from the wall. Otherwise, the bubbles experience more difficulty in departure. Variations in the contact angle also affect the heat transfer coefficient. The greater the wall contact angle, the larger the bubble-covered area. Therefore, wall thermal resistance increases, bubble nucleation is suppressed, and the heat transfer coefficient is lowered. The role of surface tension in boiling heat transfer is considerably more important than that of gravity in narrow channels. The generation of bubbles dramatically disturbs the boundary layer, and the bubble bottom micro-layer can enhance heat transfer. The heat transfer coefficient of Zshaped channels is larger than that of the I-shaped type, and the pressure drop of the former is clearly higher.
Starting Page 250
Ending Page 256
Page Count 7
File Format PDF
ISSN 20951701
Journal Frontiers of Energy and Power Engineering in China
Volume Number 5
Issue Number 3
e-ISSN 16737504
Language English
Publisher SP Higher Education Press
Publisher Date 2010-11-23
Publisher Institution Chinese Universities
Publisher Place Heidelberg
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword nucleate boiling narrow channel numerical simulation bubble dynamics Energy Technology
Content Type Text
Resource Type Article
Subject Energy Engineering and Power Technology
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