A cooling model evaluation from the quenching mesh for hydrogen control

The model to estimate the performance of the quenching mesh that may be used to prevent the transition of the deflagration to detonation in severe accidents is developed. This model suggests the relation of the initial pressure and flame velocity for a given mixture condition. The model is developed using the heat loss equation from the flame to the mesh wall for single square mesh and is compared to the experimental results of the small-scale test(below the sub-atmospheric pressure, 30% hydrogen concentration) and medium-scale test(over the atmospheric pressure, 8-10% hydrogen concentration). The model shows the differences with the experimental results depending on the heat transfer methods from the flame to the wall. The relation to evaluate the quenching ability of the mesh is suggested using initial pressure and flame velocity for a given mixture condition