Published August 2013 | Version v1
Journal article Metadata-only

Visualized experiment study on sliding and lift-off of bubbles in narrow rectangular channel

Creators

  • 1. National Energy R and D Center of Pressurized Water Reactor Technology, Nuclear Power Institute of China, Chengdu (China)
  • 2. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu (China)

Description

The phenomenon on sliding and lift-off of bubbles in a narrow rectangular channel were observed through the top view and side view of the narrow rectangular channel using a high speed digital camera. In inclined upward facing upflow boiling and in vertical downflow boiling, the bubble tends to lift off from the surface. The bubble velocity increases after lift-off from the heating surface, and the condensation phenomenon of lift-off bubble will occur when the bulk flow is subcooling, which results in the change of bubble shape. Base on the experimental results, the effects of different flow mode and heating surface inclined mode on the sliding and lift-off of bubble are analyzed. (authors)

Additional details

Publishing Information

Journal Title
Nuclear Power Engineering
Journal Volume
34
Journal Issue
4
Journal Page Range
p. 73-78
ISSN
0258-0926

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
47112323
Subject category
S42: ENGINEERING;
Descriptors DEI
BOILING; BUBBLES; FLOW VISUALIZATION; HEATING; RECTANGULAR CONFIGURATION; SHAPE; SUBCOOLING; SURFACES; VAPOR CONDENSATION; VELOCITY
Descriptors DEC
CONFIGURATION; COOLING; PHASE TRANSFORMATIONS

Optional Information

Notes
5 figs., 9 refs.