The present paper deals with the assessment of CATHARE2 code against a primary to secondary leak transient conducted in the scaled facility PSB-VVER, operated at the Electrogorsk Engineering and Research Centre (EREC). The experiment is the fourth out of five experiments part of the OECD/NEA PSB-VVER Project validation matrix. The test was designed and executed to obtain the experimental data addressing a scenario and phenomena not covered by the OECD/NEA VVER validation matrix. Indeed, the objectives of the test are the investigation of the thermal-hydraulic (TH) response of the VVER-1000 following a primary to secondary side accident scenario as well as the investigation of the phenomena involved in the transient by the availability of experimental data which are useful for the validation of thermal-hydraulic system (TH-SYS) codes. The test is simulated using CATHARE2V2.5_1. The accuracy of the calculation is evaluated by qualitative and quant1itative analysis. The quantification of the accuracy is performed using the Fast Fourier Transform Base Method (FFTBM) developed at University of Pisa. The tool provides an integral representation of the accuracy quantification in the frequency domain.
Simulation of Primary to Secondary Leak Transient in VVER-1000 Scaled Facility
D'AURIA, FRANCESCO SAVERIO
2009-01-01
Abstract
The present paper deals with the assessment of CATHARE2 code against a primary to secondary leak transient conducted in the scaled facility PSB-VVER, operated at the Electrogorsk Engineering and Research Centre (EREC). The experiment is the fourth out of five experiments part of the OECD/NEA PSB-VVER Project validation matrix. The test was designed and executed to obtain the experimental data addressing a scenario and phenomena not covered by the OECD/NEA VVER validation matrix. Indeed, the objectives of the test are the investigation of the thermal-hydraulic (TH) response of the VVER-1000 following a primary to secondary side accident scenario as well as the investigation of the phenomena involved in the transient by the availability of experimental data which are useful for the validation of thermal-hydraulic system (TH-SYS) codes. The test is simulated using CATHARE2V2.5_1. The accuracy of the calculation is evaluated by qualitative and quant1itative analysis. The quantification of the accuracy is performed using the Fast Fourier Transform Base Method (FFTBM) developed at University of Pisa. The tool provides an integral representation of the accuracy quantification in the frequency domain.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
