밀폐된 격실에서의 수소화염 가속에 대한 수치해석

다국어 초록 (Multilingual Abstract)

When a hydrogen released and mixed with air in a tightly-closed volume is burnt, its flame can be accelerated in the case of its concentrations higher than 10 vol%. The accelerated flame could become a detonation which is led by a shock wave. It has been shown from the accident of the nuclear power plants at Hukushima how a hydrogen burn in a confined volume such as the reactor building is explosive and devastating. For a confined volume which has a possibility of a hydrogen leakage, it is needed to evaluate the characteristics of the flame propagation and to install a hydrogen control system or to ensure structural strength resisting to pressure load from an explosion. In order to numerically evaluate the possibility of a hydrogen flame acceleration in a confined volume, efforts have been made to implement existing numerical schemes and combustion models. Recently international research projects for hydrogen flame propagation in confined vessels such as ENACEFF and THAI have been conducted the purpose of the projects is to generate experimental data for the validation of numerical codes. In this study, a combustion solver in OpenFOAM is applied to simulation of the hydrogen flame propagations in the ENACEFF and THAI vessels. The numerical results are compared with the experimental data to show the applicability of the CFD code to real containments.