Propellants Explosives Pyrotechnics · 2000 · 81 citations · 0 references
EngineeringMechanical EngineeringPhysicsComputational Fluid DynamicsFluid DynamicsReaction EngineeringDetonation TheoryFlame PropagationReactive Flow SimulationDetonationDetonation Front CurvatureDetonation PhysicsDetonation PropagationDetonation SimulationNumerical Modeling Of DetonationSize Effect ModelingViscosity
JWL++ is a simple Reactive Flow model that includes time-dependent reaction in prompt detonation. It consists of a Murnahan unreacted equation of state, a JWL reacted EOS, a mixer for the two EOS's and a single-time-constant exponential rate. The mixing can be done by four ways, using either pressure or pressure plus artificial viscosity in the rate, and also using either an analytic function or a pressure equilibrator. The model reproduces the Size Effect and detonation front curvature. Detonation failure can also be induced. JWL++ propagates also through an arbitrary geometry in 3-D without the need for pre-run program burn calculations. It is slower than a JWL/program “Burn” but faster than “Ignition & Growth”.