Fuel Injections & Sprays

INTERNAL NOZZLE FLOW

CONVERGE's unique automatic meshing capability allows for efficient setup of fuel injector simulations. The needle motion, including side-to-side "wobble", is easily imposed providing accurate prediction of hole-to-hole variations in mass flow.

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CAVITATION MODELING

Cavitation can have a significant impact on a fuel injector's performance. CONVERGE includes validated models that predict when and where cavitation occurs and how it affects the downstream spray.

VOLUME OF FLUID

The VOF method in CONVERGE may be used to simulate multi-phase liquid and gas flows. With AMR, the fluid-fluid interface is tracked with great precision at each time-step. AMR refines the mesh for VOF simulations only in the areas where it is needed, so the simulation is not slowed down by an overly-refined mesh.

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GRID CONVERGENT SPRAY MODELING

CONVERGE's unique spray model implementation, together with AMR, allows one to achieve grid convergence with Lagrangian spray calculations using both RANS and LES turbulence models. Once grid convergence is achieved, the user can rest assured that their simulation results will not significantly change as the mesh is further refined.

MULTI-COMPONENT FUELS

Accurate prediction of modern engine design requires a realistic representation of the injected fuel. CONVERGE models the liquid spray as a multi-component mixture, allowing the user to specify as many components and their properties as needed.

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ADVANCED SPRAY MODELS

CONVERGE includes state-of-the-art models for liquid atomization, drop breakup, collision and coalescence, turbulent dispersion, and droplet evaporation. In addition, models for spray-wall interaction and liquid wall-film physics are incorporated in the software.

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