Full Content is available to subscribers

Subscribe/Learn More  >

Probabilistic Prediction of Fatigue Life of Pipes Under Turbulent Fluid Mixing

[+] Author Affiliations
Oriol Costa Garrido, Leon Cizelj

Jožef Stefan Institute, Ljubljana, Slovenia

Paper No. ICONE24-60194, pp. V005T15A010; 9 pages
  • 2016 24th International Conference on Nuclear Engineering
  • Volume 5: Student Paper Competition
  • Charlotte, North Carolina, USA, June 26–30, 2016
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5005-3
  • Copyright © 2016 by ASME


This paper presents a recently proposed analysis of the uncertainties involved in the thermal fatigue assessment of pipes under turbulent fluid mixing. The assumed overriding contributor to the uncertainty of the predicted fatigue life is the variability inherent in the temperature histories of the turbulently mixing fluids, which intrinsically depends on the length of temperature histories considered in the assessment.

The fluid temperature histories are generated with an improved spectral loading approach within the temperature variation space, which includes all physically possible temperature fluctuations and all flow regimes. The results of the presented analysis are compared with the typical sinusoidal method, emphasizing the well-known over-conservatism of this method.

This paper extends the analyses to the initial thermo-mechanical transient of the pipe wall around the mixing fluids and its influence on fatigue life predictions. The high stresses arising at the beginning of the transient yield, generally, conservative life time results. In a separate sensitivity analysis, the impact of the heat transfer coefficient on fatigue predictions is also studied. This is the first attempt to correlate the uncertainties in the physical fluid mixing conditions and heat transfer to the estimated fatigue life.

Copyright © 2016 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In