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Adjoint operator approach to functional reliability analysis of passive fluid dynamical systems

DSpace at IIT Bombay

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Title Adjoint operator approach to functional reliability analysis of passive fluid dynamical systems
 
Creator ARUL, AJ
IYER, NK
VELUSAMY, K
 
Subject probabilistic safety assessment
heat removal system
sensitivity theory
design
uncertainties
simulation
adjoint operator
sensitivity
response surface
reliability
natural convection
passive system
fluid dynamics
 
Description Reliability analysis of passive systems mainly involves quantification of the margin to safety limits in probabilistic terms. For systems represented by complex models, propagating input uncertainty to get the response uncertainty and hence probability information requires intensive computational effort. Here a computationally efficient method for the functional reliability analysis of passive fluid dynamical systems is presented. The approach is based on continuous adjoint operator technique to generate a response surface approximating the given system model from the sensitivity coefficients. A numerical application of this method to the reliability analysis of heat transport in an asymmetrical natural convection loop is demonstrated. Computational efficiency and accuracy compared with the direct Monte-Carlo and forward response surface methods. (C) 2009
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-21T19:56:02Z
2011-12-26T12:52:08Z
2011-12-27T05:39:10Z
2011-07-21T19:56:02Z
2011-12-26T12:52:08Z
2011-12-27T05:39:10Z
2009
 
Type Article
 
Identifier RELIABILITY ENGINEERING & SYSTEM SAFETY, 94(12), 1917-1926
0951-8320
http://dx.doi.org/10.1016/j.ress.2009.06.008
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5973
http://hdl.handle.net/10054/5973
 
Language en