Flow induced vibration of thermowells

Traditional thermowell selection methods based on velocity rating tables ar e no longer a match for the demands of modern processes, and a new approach , involving dynamic analysis methods, is needed. Starting with the simplest possible thermowell, a uniform cantilever subjected to a combination of vo rtex shedding and drag forces, the dynamic stresses are obtained for a comp lete range of flows. This establishes a basis for extending the standard th ermowell stress model to cover a wider range of processes and flow conditio ns. (C) 1999 Elsevier Science Ltd. All rights reserved.