The Stochastic Reactor Model

The SRM Engine Suite is a virtual engineering design tool for simulating the performance and exhaust gas emissions from internal combustion engines. Example applications include motorcycle, passenger car, motorsport, truck, locomotive, marine and power generation. Through integrating the SRM Engine Suite, our growing customer base has benefited by adding a well validated, robust and state-of-the-art library of sub-models to their design process enabling unrivalled optimisation of fuel characteristics and engine design and control parameters.

All projects & post-processing are handled through CMCL’s newly improved SRM Engine Suite, offering intuitive and user-friendly methods to setup your simulations, export/visualise data, and run advanced post-processing analysis tools.

New Additions

Through our on-going product development program and through customer feedback and projects, the tool has the following new capabilities.

  • Advanced fuels, combustion and emissions simulations using the SRM Engine Suite
  • More reactors: Iso-thermal, liquid fuel injection, cetane test, octane test, oil droplet ignition engine, engine breathing, dual fuel engine.
  • More fuel models: Hydrogen, toluene reference fuel, ethanol, dual fuel (natural gas & diesel).
  • Fast solvers: Chemistry solvers (5-15 times speed-up), mixing and chemistry sub-model flexibility.
  • Advanced turbulence models: Accounting for swirl, tumble, injection and squish effects.
  • More accurate particulate matter (PM) prediction: New wall impingement sub-model.
  • Ignition delay matrix calculator including validation and error checking
  • Improved sensitivity analysis: Easy configuration, customisation and post processing.
  • Improved visualisations: Plot line, scatter, bar, pie and raw tabular data, save custom charts, modify titles and colours, import CSV files and compare with your simulations.
  • Improved workflow: batch running, parameter, case handling and error checking with support menus and visualisation.

Simulated in-cylinder pressure
Simulated in-cylinder heat release rate
Simulated injection strategy

Software Features

  • Full library of customisable in-cylinder sub-models for application to your engine.
  • Fully fuel flexible with full integration with the kinetics toolkit
  • Fully flexible approach for robust analysis of advanced and unconventional combustion
  • Predictive combustion and emissions simulations using detailed chemical kinetics.
  • Advanced chemistry solvers enable the solution of detailed chemical kinetics.
  • Predictive turbulent mixing models for all combustion modes.
  • Accurate diesel combustion models with multiple direct injection events.
  • Accurate SI combustion and knock models (fully predictive and semi-empirical modes).
  • Homogeneous Charge Compression Ignition (HCCI) / Low Temp Combustion (LTC) / Partially Premixed Compression Ignition (PPCI).
  • Simulator accounts directly for in-cylinder stratification (injection events, heat transfer, emissions formation).
  • Crank angle resolved combustion characteristics (heat release rate, combustion phasing and duration, and in-cylinder pressure).
  • Thermal analysis and predictions of exhaust gas temperatures.
  • Market-leading solution in identifying sources of exhaust gas emissions (CO, HC, NOx and PM).
  • Empirical models for simulation of PM emissions.
  • Integrated detailed soot model: Detailed population balance soot model enables calculation of soot morphology, composition and detailed particle size distribution.
  • Analysis of chemical species including intermediates (OH, formaldehyde).
  • More robust predictive performance compared to conventional 1D simulation tools
  • Reduced computational times compared to equivalent conventional 3D CFD approach
  • State-of-the-art models with validation published in well over twenty-five peer-reviewed journal articles.
  • Full technical support, training and documentation.
  • Equivalence Ratio – in-cylinder equivalence Ratio and temperature evolution
  • Spark Ignition – software contains advanced combustion models specifically for the application of Spark Ignition (SI) engine combustion
  • Compression Ignition – advanced combustion models specifically for applications of Compression Ignition (CI) engine combustion
  • Low Emissions Combustion – predictive combustion and emission simulations using detailed chemical kinetics
  • Example Applications – a variety of case studies, tutorials, and example projects
  • API & Couplings – expand the capability of computational 1D and 3D thermodynamic and fluid dynamic codes with state-of-the-art chemistry solvers, chemical kinetic mechanisms, and combustion analysis