Personne
Omar Zerkak
Publications associées (7)
Global Sensitivity Analysis of Transient Code Output Applied to a Reflood Experiment Model using the TRACE Code
Andreas Pautz, Damar Canggih Wicaksono, Omar Zerkak
Appropriate model assessment requires proper understanding of the impact of variations of model parameters and their interactions on results. However, in many thermal-hydraulic (TH) simulations, the code often predicts time-dependent output where the impac ...
American Nuclear Society2016Bayesian Calibration of Thermal-Hydraulics Model with Time-Dependent Output
Andreas Pautz, Damar Canggih Wicaksono, Omar Zerkak
The currently adopted practice for uncertainty quantification of thermal-hydraulics code predictions is done through statistical sampling where the code is evaluated multiple times using different values of input parameters that are randomly generated acco ...
2016A Methodology for Global Sensitivity Analysis for Time-Dependent Code Output Applied to Reflood Simulation in TRACE
Andreas Pautz, Damar Canggih Wicaksono, Omar Zerkak
Understanding properly the impact of model parameters and their interactions on the predictions is required for an appropriate model assessment. For simulation of reflooding following a LOCA, this requirement is justified because the important parameters a ...
2015Sensitivity Analysis of a Bottom Reflood Simulation using Morris Screening Method
Andreas Pautz, Damar Canggih Wicaksono, Omar Zerkak
In the work presented in this paper, a sensitivity analysis using the Morris screening method was carried out for a model of the Flooding Experiment with Blocked Arrays (FEBA) separate-effect test facility. The sensitivity analysis was conducted in the con ...
2014Exploring Variability in Reflood Simulation Results: an Application of Functional Data Analysis
Andreas Pautz, Damar Canggih Wicaksono, Omar Zerkak
In this paper we followed the functional data analysis (FDA) paradigm to summarize the output of computer code simulating a reflood transient. The paradigm stands on the assumption that the data (code output) is generated by a smooth, albeit complex, proce ...
2014Application of Power Time-Projection on the Operator Splitting Coupling Scheme of the TRACE/S3K Coupled Code
Rakesh Chawla, Hakim Ferroukhi, Damar Canggih Wicaksono, Omar Zerkak
This paper reports refinement studies on the temporal coupling scheme and time-stepping management of TRACE/S3K, a dynamically coupled code version of the thermal-hydraulics system code TRACE and the 3D core simulator Simulate-3K. The studies were carried ...
American Nuclear Society2013Cross-section modelling effects on pressurised water reactor main steam line break analyses
Rakesh Chawla, Hakim Ferroukhi, Omar Zerkak
Because of the strong asymmetric overcooling effects occurring during a PWR main steam line break (MSLB) event, an accurate analysis of this transient requires the use of 3-D kinetics methods. An assessment has been made of the relative performance of the ...
Elsevier Science Ltd.2009