Prediction of the damaging flow-induced vibrations in tubular heat exchangers with triangular arrays

Yehia A. Khulief, Salem A. Bashmal, Sayed A. Said, Dhawi A. Al-Otaibi, Khalid M. Mansour

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The prediction of flow rates at which the vibration-induced instability takes place in tubular heat exchangers due to crossflow is of major importance to the performance and service life of such equipment. In this paper, the semi-analytical model developed in [1] for square tube arrays was extended and utilized to study the triangular tube patterns. A laboratory test rig with instrumented test section is used to measure the fluidelastic coefficients to be used for tuning the mathematical model. The test section can be made of any bundle pattern. In this study, two test sections were constructed for both the normal triangular and the rotated triangular tube arrays. The developed scheme is utilized in predicting the onset of flowinduced instability in the two triangular tube arrays. The results are compared to those obtained for two other bundle configurations; namely the square and rotated square arrays reported in [1]. The results of the four different tube patterns are viewed in the light of TEMA predictions. The comparison demonstrated that TEMA guidelines are more conservative in all configurations considered.

Original languageEnglish
Title of host publicationSymposia
Subtitle of host publicationFluid Machinery; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791846223
StatePublished - 2014

Publication series

NameAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
ISSN (Print)0888-8116

Bibliographical note

Publisher Copyright:
Copyright © 2014 by ASME.


  • Cross-Flow
  • Fluid-Structure Interaction
  • Heat Exchangers

ASJC Scopus subject areas

  • Mechanical Engineering


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