Experimental investigation in the TOSQAN facility of heat and mass transfers in a spray for containment application

Numerical Simulation of Decontamination of Airborne Fission Products during In-Vessel Release Phase by Containment Spray

“…The purpose of the TOSQAN cold spray test was to study helium mixing due to spray activation without heat and mass transfers between gas and droplets. Porcheron et al (2007) have studied the effect of spray injection on containment thermal hydraulic conditions and the local heat and mass transfers between spray droplets and gas [14]. Mimouni et al (2010) have studied the TOSQAN vessel and successfully benchmarked the NEPTUNE CFD code with TOSQAN 101 and 113 test results.…”

Modelling of sprays in containment applications with A CMFD code

“…But, for the benchmark, the mixture is assumed to be initially homogeneous with a pressure of 2.5 bar. The experimental results (Porcheron, 2007) show that four phases can be observed: -Phase A : Vaporization phase (strong increase of gas moles number; strong decrease of gas temperature); -Phase B : Fast condensation phase up to gas saturation (Strong condensation, gas moles number decrease, gas cooling due to convective heat transfer between gas and droplets); -Phase C : Saturated gas, slow condensation phase up to thermodynamic equilibrium (Gas cooling due to convective heat transfer between gas and droplets); -Phase D : Thermodynamic equilibrium (Equilibrium between heat taken by droplets and heat given by wall). Results obtained for the pressure time evolution are presented on Figure 10.…”

Key Impact Parameters for Application of Alternative Source Term to Kori Unit 1

“…These references are based on the FSAR of Kori Unit 1. All parameters of Table 7 are wellknown, necessary elements used in the input deck of the safety analysis [1][2][3][4][5]. The approach is essentially based on the relevancy of a parameter to the dose calculation and the extent to which the parameter influences the peak dose calculations.…”

“…The TOSQAN facility was established to study the effects of water spray activation on aerosol washout. Using the facility, experiments on the physical effects for detailed features of the spray, the spray water droplet distribution, and the aerosol distribution were carried out from 2003 to 2007 [5,6].…”