Product FeaturesAVL FIRE comprises special functions and modules particularly designed to handle the geometric complexity of engines as well as the relevant chemical and physical processes taking place.
FIRE Lagrangian Multiphase Module This module provides worldwide leading technology for CFD simulation of mixture formation in all types of spark ignited and compression ignition engines. The module comprises more than twenty different spray formation and propagation capabilities including advanced models related to spray primary and secondary break-up, droplet dispersion, collision and coalescence, evaporation and wall interaction. A wall-film formation and propagation model enables analysis and optimization of the relevant processes under port fuel injection and direct injection conditions.
FIRE Combustion Module It provides a comprehensive set of models for fast and easy analysis of spark-ignition engine flame propagation including assessment of knocking combustion tendency. In regard to compression ignition combustion systems, FIRE offers a well-validated set of models describing the individual processes of auto-ignition, combustion and pollutant formation. Advanced NO and soot formation / depletion models enable assessing the emission characteristics of different combustion concepts. FIRE also allows solving detailed reaction schemes.
FIRE Aftertreatment ModuleTogether with AVL BOOST, both part of AVL’s Aftertreatment Simulation Platform, this module offers a wide range of capabilities related to the simulation of flow, heat transfer and catalytic surface reactions for various types of aftertreatment devices. Three-way catalysts, NOx storage catalysts as well as Diesel particulate filters and SCR systems can be addressed by its generic models. Multiple scalar transport, user defined reaction schemes and reaction rate coefficients as well as the direct access to thermo-chemistry databases, offer unique flexibility to all engineering problems related to exhaust gas aftertreatment simulation.
FIRE Eulerian Multiphase ModuleIt offers unique capabilities for simulating two- and multi-phase flow phenomena including non-linear cavitation effects. The module is capable of handling an arbitrary number of fluids and phases and allows the use of the following models:
- Homogeneous Model
- Multi-fluid Model
- Volume-of-Fluid Free-Surface Model
The module has been recently extended by implementing an erosion model, enabling the prediction of wear due to cavitation.
FIRE Coupling ModuleThis specific module allows:
- data exchange between FIRE and FEA solvers
- co-simulation of FIRE and one-dimensional engine gas dynamics and cycle simulation software
- co-simulation of two or more separate simulation tasks handling different sets of differential equations, while the coupling between these tasks may be performed by exchanging field-values at grid-boundaries or in parts of the grid-volume
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