Numerical Simulation of the Motion of Flyer Driven by Slab Explosive Initiated at Centered Point

In order to study the characteristics of flyer's acceleration by divergent detonation wave, a 2D numerical code TDY2D was developed. By using the equation of state of detonation products which are got by computing for the experimental models, the TDY2D is used to compute the motion of flyers driven by slab charge that initiated at centered point for three experimental models which are three kinds of explosive-flyer assemblies with different length/diameter ratio. The simulation results about the velocity of some points on the flyers and the front surface shape of the flyers impacting on target agree well with the experimental data. The precision in calculation is high. These prove that the code TDY2D is correct and effective.