scholarly journals Combining Interval and Probabilistic Uncertainty: What Is Computable?

2016 ◽  
pp. 13-32 ◽  
Author(s):  
Vladik Kreinovich ◽  
Andrzej Pownuk ◽  
Olga Kosheleva
Keyword(s):  
Probabilistic Uncertainty

scholarly journals Fast Probabilistic Uncertainty Quantification and Sensitivity Analysis of a Mars Life Support System Model

2020 ◽  
Vol 53 (2) ◽  
pp. 7268-7273
Author(s):  
Georgios Makrygiorgos ◽  
Soumyajit Sen Gupta ◽  
Amor A. Menezes ◽  
Ali Mesbah
Keyword(s):  
Sensitivity Analysis ◽  
Uncertainty Quantification ◽  
Support System ◽  
Life Support ◽  
System Model ◽  
Life Support System ◽  
Probabilistic Uncertainty

scholarly journals Probabilistic uncertainty analysis of an FRF of a structure using a Gaussian process emulator

2011 ◽  
Vol 25 (8) ◽  
pp. 2962-2975 ◽  
Author(s):  
Thomas E. Fricker ◽  
Jeremy E. Oakley ◽  
Neil D. Sims ◽  
Keith Worden
Keyword(s):  
Uncertainty Analysis ◽  
Gaussian Process ◽  
Probabilistic Uncertainty ◽  
Gaussian Process Emulator

Dynamic Sensitivity Analysis of Thermal-Mechanical Deformation of a CANDU Fuel Channel

2008 ◽  
Author(s):  
J. C. Luxat
Keyword(s):  
Mechanical Deformation ◽  
Time Dependent ◽  
Pressure Tube ◽  
Perturbation Approach ◽  
Probabilistic Uncertainty ◽  
Sensitivity Functions ◽  
Dynamic Sensitivity ◽  
Input Parameters ◽  
Sensitivity Method ◽  
Dynamic Sensitivity Analysis

In a limiting critical break loss of coolant accident in a CANDU reactor significant degradation of heat transfer from the fuel can occur. As a result of the subsequent increase in fuel temperature it is possible that the pressure tube undergoes heat up at intermediate pressure during blowdown. This can result in ballooning deformation of the pressure tube into contact with its calandria tube. It is required that fuel channels not fail as a consequence of the thermal mechanical deformation of the pressure tube and calandria tube in such events. Dynamic sensitivity functions are derived as analytical partial differential equations derived from the equations used to model the time-dependent behavior of physical systems. The dynamic sensitivity functions can be used to propagate uncertainties using a time-dependent perturbation approach in which the variations in a set of output variables, with respect to perturbations of the input parameters, are evaluated about reference response trajectories of the input parameters and associated output variables. The dynamic sensitivity method is described in this paper and results are presented for the pressure tube heatup phase of a LOCA. These results show the importance of all key parameters with respect to specified safety evaluation criteria. The dynamic sensitivity method is applied in a probabilistic uncertainty analysis to evaluate the probability of a pressure tube experiencing creep strain deformation to contact its calandria tube during the early stages of a LOCA.

Applying Fuzzy and Probabilistic Uncertainty Concepts to the Material Flow Analysis of Palladium in Austria

2015 ◽  
Vol 19 (6) ◽  
pp. 1055-1069 ◽  
Author(s):  
David Laner ◽  
Helmut Rechberger ◽  
Thomas Astrup
Keyword(s):  
Material Flow ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Probabilistic Uncertainty
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