Response of fully developed pipe flow to a wall-attached ring-type roughness element

Bremhorst K. and Bullock K.J. (1982) Response of fully developed pipe flow to a wall-attached ring-type roughness element. Nuclear Engineering and Design, 70 2: 253-260. doi:10.1016/0029-5493(82)90204-7


Author Bremhorst K.
Bullock K.J.
Title Response of fully developed pipe flow to a wall-attached ring-type roughness element
Journal name Nuclear Engineering and Design   Check publisher's open access policy
ISSN 0029-5493
Publication date 1982-06-02
Sub-type Article (original research)
DOI 10.1016/0029-5493(82)90204-7
Volume 70
Issue 2
Start page 253
End page 260
Total pages 8
Subject 2102 Curatorial and Related Studies
2104 Nuclear Energy and Engineering
2205 Civil and Structural Engineering
2210 Mechanical Engineering
2213 Safety, Risk, Reliability and Quality
Abstract The flow field downstream of a wall-attached roughness element in heated axisymmetric flow has been examined experimentally. Velocity and temperature fluctuations at selected points were examined for sensitivity to changes in position relative to the disturbance. Results indicate that the turbulent Prandtl number in the downstream flow field is in the range 0.4-1.2, that large Reynolds stresses are generated near the tip of the roughness element but diffuse towards the core with downstream distance, and that spectral peaks exist which decay rapidly with downstream distance. The restraining effect of the wall on the lateral turbulence intensity is also well illustrated. The rapidly changing features of the flow with downstream distance from the flow disturbance open up possibilities for monitoring of reactor fuel assemblies as well as in-service location of faults.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Sat, 09 Jul 2016, 16:13:46 EST by System User