Numerical Simulation of Two Phase Detonation with Power-Law Model Fuel and Air

• 1、National Key Lab of Transient Physics，Nanjing University of Science and Technology，Nanjing 210094

Abstract：In order to investigate the impact of fluid component on process of two phase deflagration to detonation transition about energetic liquids obey to power-law non-newtonian fluid and air mixture. The control equations of two phase detonation were established considering the influence of shear rate on viscosity, and solved by CE/SE method. Numerical simulation was done based on the equations for the deflagration to detonation process of gas and liquids mixture with fluid component equal to 0.75, 1 and 1.25 separately. The results show that radius of liquid experiences shock induced stage, the accelerate stage and the react completely stage in turn. Each stage is affected by fluid component, especial for the accelerate stage. With the fluid component increases, the time and distance of deflagration to detonation transition become shorter, the pressure and velocity of detonation wave become smaller. The calculation results have some significance references for application of power-law type fuels.

Keywords： explosion mechanics deflagration to detonation transition power-law fluids ce/se method numerical simulation