The Response of a Thermal Barrier System to Acoustic Excitation in a Gas Turbine Nuclear Reactor PUBLIC ACCESS

[+] Author Affiliations
W. S. Betts, Jr., R. D. Blevins

General Atomic Co., San Diego, CA

Paper No. 81-GT-16, pp. V002T08A004; 7 pages
  • ASME 1981 International Gas Turbine Conference and Products Show
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Houston, Texas, USA, March 9–12, 1981
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7962-7
  • Copyright © 1981 by ASME


A gas turbine (GT) located within a High-Temperature Gas-Cooled Reactor (HTGR) induces high acoustic sound pressure levels into the primary coolant (helium). This acoustic loading induces high cycle fatigue stresses which may control the design of the thermal barrier system. This study examines the dynamic response of a thermal barrier configuration consisting of a fibrous insulation compressed against the reactor vessel by a coverplate which is held in position by a central attachment fixture. The results of dynamic vibration analyses indicate the effect of the plate size and curvature and the attachment size on the response of the thermal barrier.

Copyright © 1981 by ASME
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