3 papers
stat.CO2023
Inverse Uncertainty Quantification by Hierarchical Bayesian Modeling and Application in Nuclear System Thermal-Hydraulics Codes
Chen Wang, Xu Wu, Tomasz Kozlowski
Inverse Uncertainty Quantification (IUQ) method has been widely used to quantify the uncertainty of Physical Model Parameters (PMPs) in nuclear Thermal Hydraulics (TH) systems. Thi…
physics.comp-ph2018
Assessment of continuous and discrete adjoint method for sensitivity analysis in two-phase flow simulations
Guojun Hu, Tomasz Kozlowski
The efficient method for computing the sensitivities is the adjoint method. The cost of solving an adjoint equation is comparable to the cost of solving the governing equation. Onc…
physics.comp-ph2018
Application of discrete adjoint method to sensitivity and uncertainty analysis in steady-state two-phase flow simulations
Guojun Hu, Tomasz Kozlowski
Verification, validation and uncertainty quantification (VVUQ) have become a common practice in thermal-hydraulics analysis. An important step in the uncertainty analysis is the se…