Designing structures resistant to failure due to fluid induced vibration is a challenge. This paper shows a methodology of evaluating the cycles to failure of thermowells placed in a fluid flow through a large pipe in supercritical operation. The ASME PTC guide describes using Finite Element Analysis (FEA) to evaluate these conditions on a case by case basis. One case from several validated cases is presented using measurements available from the field.
- Fluids Engineering Division
Estimating Fatigue Life of Thermowells in Supercritical Operation
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Diwakar, P, Liu, Y, & Jaouhari, M. "Estimating Fatigue Life of Thermowells in Supercritical Operation." Proceedings of the ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change. Montreal, Quebec, Canada. July 15–20, 2018. V002T11A016. ASME. https://doi.org/10.1115/FEDSM2018-83426
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