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Title: The effect of flat bar supports on the crossflow induced response of heat exchanger U-tubes

Abstract

A wind tunnel study was conducted to determine the effect of flat bar supports on the crossflow induced response of heat exchanger U-tubes. The 13-mm-dia tubes formed a triangular array with a pitch ratio of 1.57 and a mean U-bend diameter of about 1.5 m. A 0.3-m-long section of the array was exposed to a flow parallel to the plane of the U-bends. Experiments were conducted with no supports, with one set of flat bars at the apex, and with two sets of flat bar supports at the apex and 45 deg points. In each case, the tube response was monitored to a flow velocity beyond that required for fluid elastic instability. Limited experiments were also conducted to examine the effect of tube support clearance on tube response. Conclusions are drawn regarding the effectiveness of flat bars as U-bend antivibration supports.

Authors:
;
Publication Date:
Research Org.:
Department of Mechanical Engineering, McMaster University, Hamilton, Ontario
OSTI Identifier:
6696891
Resource Type:
Journal Article
Journal Name:
J. Eng. Power; (United States)
Additional Journal Information:
Journal Volume: 105:4
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; HEAT EXCHANGERS; CROSSFLOW SYSTEMS; TUBES; SUPPORTS; DIMENSIONS; EXPERIMENTAL DATA; PERFORMANCE TESTING; DATA; INFORMATION; MECHANICAL STRUCTURES; NUMERICAL DATA; TESTING; 200101* - Fossil-Fueled Power Plants- Cooling & Heat Transfer Equipment & Systems

Citation Formats

Weaver, D S, and Schneider, W. The effect of flat bar supports on the crossflow induced response of heat exchanger U-tubes. United States: N. p., 1982. Web.
Weaver, D S, & Schneider, W. The effect of flat bar supports on the crossflow induced response of heat exchanger U-tubes. United States.
Weaver, D S, and Schneider, W. 1982. "The effect of flat bar supports on the crossflow induced response of heat exchanger U-tubes". United States.
@article{osti_6696891,
title = {The effect of flat bar supports on the crossflow induced response of heat exchanger U-tubes},
author = {Weaver, D S and Schneider, W},
abstractNote = {A wind tunnel study was conducted to determine the effect of flat bar supports on the crossflow induced response of heat exchanger U-tubes. The 13-mm-dia tubes formed a triangular array with a pitch ratio of 1.57 and a mean U-bend diameter of about 1.5 m. A 0.3-m-long section of the array was exposed to a flow parallel to the plane of the U-bends. Experiments were conducted with no supports, with one set of flat bars at the apex, and with two sets of flat bar supports at the apex and 45 deg points. In each case, the tube response was monitored to a flow velocity beyond that required for fluid elastic instability. Limited experiments were also conducted to examine the effect of tube support clearance on tube response. Conclusions are drawn regarding the effectiveness of flat bars as U-bend antivibration supports.},
doi = {},
url = {https://www.osti.gov/biblio/6696891}, journal = {J. Eng. Power; (United States)},
number = ,
volume = 105:4,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1982},
month = {Fri Oct 01 00:00:00 EDT 1982}
}