Abstract
Two typical experiments have been performed in Chinese test facility under full pressure load corresponding to typical PWRs, (1) dynamic behavior of pressurizer due to relief valve operations (Case-I) is extremely important in transients and accident conditions regarding depressurization of PWR primary system; (2) Outsurge/Insurge operation is one of the transient which is often encountered and experienced in pressurizer systems due to pressure transients in primary system of PWRs. The simulation capability of RELAP5/MOD2 is good in comparison to experimental results. The physical models (such as interface model, stratification model), playing a major role in such simulation, seems to be realistic. The effect of realistic valve modeling in depressurization simulation is extremely important. Sufficient data for relief valve (the dynamic characteristics of valve) play a major role. The time dependent junction model and the trip valve model with a reduced discharge coefficient of 0.2 give better predictions in agreement with the experiment data while the trip valve models with discharge coefficient 1.0 yield overdepressurization. The simulation of outsurge/insurge transient yields satisfactory results. The thermal non-equilibrium model is important with respect to simulation of complicated physical phenomena in outsurge/insurge transient but has a negligible effect upon the depressurization simulation. (orig./HP).
Citation Formats
Hanjun, Xue, Tanrikut, A, and Menzel, R.
The assessment of RELAP5/MOD2 based on pressurizer transient experiments.
Germany: N. p.,
1992.
Web.
Hanjun, Xue, Tanrikut, A, & Menzel, R.
The assessment of RELAP5/MOD2 based on pressurizer transient experiments.
Germany.
Hanjun, Xue, Tanrikut, A, and Menzel, R.
1992.
"The assessment of RELAP5/MOD2 based on pressurizer transient experiments."
Germany.
@misc{etde_10130918,
title = {The assessment of RELAP5/MOD2 based on pressurizer transient experiments}
author = {Hanjun, Xue, Tanrikut, A, and Menzel, R}
abstractNote = {Two typical experiments have been performed in Chinese test facility under full pressure load corresponding to typical PWRs, (1) dynamic behavior of pressurizer due to relief valve operations (Case-I) is extremely important in transients and accident conditions regarding depressurization of PWR primary system; (2) Outsurge/Insurge operation is one of the transient which is often encountered and experienced in pressurizer systems due to pressure transients in primary system of PWRs. The simulation capability of RELAP5/MOD2 is good in comparison to experimental results. The physical models (such as interface model, stratification model), playing a major role in such simulation, seems to be realistic. The effect of realistic valve modeling in depressurization simulation is extremely important. Sufficient data for relief valve (the dynamic characteristics of valve) play a major role. The time dependent junction model and the trip valve model with a reduced discharge coefficient of 0.2 give better predictions in agreement with the experiment data while the trip valve models with discharge coefficient 1.0 yield overdepressurization. The simulation of outsurge/insurge transient yields satisfactory results. The thermal non-equilibrium model is important with respect to simulation of complicated physical phenomena in outsurge/insurge transient but has a negligible effect upon the depressurization simulation. (orig./HP).}
place = {Germany}
year = {1992}
month = {Mar}
}
title = {The assessment of RELAP5/MOD2 based on pressurizer transient experiments}
author = {Hanjun, Xue, Tanrikut, A, and Menzel, R}
abstractNote = {Two typical experiments have been performed in Chinese test facility under full pressure load corresponding to typical PWRs, (1) dynamic behavior of pressurizer due to relief valve operations (Case-I) is extremely important in transients and accident conditions regarding depressurization of PWR primary system; (2) Outsurge/Insurge operation is one of the transient which is often encountered and experienced in pressurizer systems due to pressure transients in primary system of PWRs. The simulation capability of RELAP5/MOD2 is good in comparison to experimental results. The physical models (such as interface model, stratification model), playing a major role in such simulation, seems to be realistic. The effect of realistic valve modeling in depressurization simulation is extremely important. Sufficient data for relief valve (the dynamic characteristics of valve) play a major role. The time dependent junction model and the trip valve model with a reduced discharge coefficient of 0.2 give better predictions in agreement with the experiment data while the trip valve models with discharge coefficient 1.0 yield overdepressurization. The simulation of outsurge/insurge transient yields satisfactory results. The thermal non-equilibrium model is important with respect to simulation of complicated physical phenomena in outsurge/insurge transient but has a negligible effect upon the depressurization simulation. (orig./HP).}
place = {Germany}
year = {1992}
month = {Mar}
}