Realis Simulation 2026.2
The 2026.2 release is now available to download. Realis Simulation helps engineers develop cleaner-fuel engines, refine engine cooling and friction performance, and optimise transmissions and vehicle systems. The latest release reduces manual preparation and makes it easier to compare design choices before physical testing.
From predictive dual-fuel combustion and coupled coolant-flow and thermal analysis to automated gear and valvetrain optimisation, 2026.2 connects more of the engineering workflow. Enhanced model reuse and results analysis help engineers assess the consequences of each design change with less repeated setup.
Fluid Dynamics
Our 1D and 3D CFD fluid dynamics simulation tools help engineers optimise existing internal combustion engines for efficiency and lower emissions, and model new clean combustion fuels for standalone engines and hybrid systems.
Modelling new clean fuel technology
Developing alternative-fuel engines requires an understanding of how fuel delivery and calibration affect combustion. WAVE-RT now brings predictive dual-fuel combustion with a Diesel pilot into real-time studies, helping engineers investigate pilot injection and premixed-fuel strategies before testing. In VECTIS, improved liquid-gas spray coupling makes demanding conditions such as ammonia flash evaporation more robust to simulate, extending the fuel-injection conditions that can be investigated.
Faster, more optimised design for cleaner internal combustion engines
The 2026.2 release reduces the preparation needed to explore engine performance across the operating range. Physics-based boost, BMEP and throttle controllers simplify control setup without PID gain calculations. Reusable calibration case selections, enhanced user libraries, integrated solid material data and faster CAD preparation in WAVEBuild3D reduce repeated work. Extended cylinder cooling definitions help engineers calibrate thermal behaviour and examine axial variations in liner temperature.
VECTIS real gas modelling provides a more representative basis for high-pressure engine studies, supported by Cantera 3.2 mechanism handling for compatible real gas property data. Enhanced spark misfire prediction helps engineers assess ignition stability as EGR levels increase, including the effects of spark re-strike. Pressure ramping helps steady-state flow studies establish more smoothly, while expanded undo support reduces rework when refining model setup.
Structural Mechanics
Our structural mechanics simulation tools help engineers assess component durability, thermal behaviour, friction and transmission performance, supporting more efficient engines and powertrain systems.
Faster, more optimised design for cleaner internal combustion engines
The 2026.2 enhancements help engineers assess engine cooling, friction and valvetrain behaviour with less manual preparation between design iterations. In FEARCE-Vulcan, importing WAVE or third-party model data reduces repeated setup and keeps thermal studies consistent with the engine performance model. The coolant module with CFD-based nucleate boiling connects coolant-flow and component-temperature prediction, helping engineers investigate cooling in highly loaded regions without manually transferring CFD loads to the FE model.
PISDYN lets engineers evaluate how spatially varying surface roughness affects piston friction, while extended parameterisation in the PISDYN-RINGPAK plugin broadens the design and operating-condition studies that can be prepared. VALDYN links cam design and dynamic assessment in an integrated modeFRONTIER optimisation workflow, helping engineers improve valve control and spring behaviour while maintaining the required valve motion.
Faster, more optimised design of transmissions
SABR-Gear combines automated micro-geometry optimisation, faster tooth contact calculations and 3D visualisation to help engineers compare flank modifications and understand their effect on the loaded gear pair. These capabilities make it easier to explore design alternatives and recognise contact patterns that need further attention.
In SABR, casing thermal expansion brings temperature effects into bearing load assessment, while spherical roller bearing support extends the arrangements that can be modelled. Undo and Redo support reduces the effort of revising a transmission study.
Systems Engineering
IGNITE supports the simulation of electric, hybrid and combustion technologies alongside other Realis Simulation and third-party tools, helping engineers assess complete vehicle systems with a focus on efficiency and reduced tailpipe emissions.
Faster, more optimised design of vehicle systems for reduced emissions
Comparing vehicle-system designs is easier when component models can be reused and connected with less setup. The 2026.2 IGNITE release simplifies Functional Mock-up Unit (FMU) workflows, helping engineers configure coupled studies, check model behaviour and repeat runs more efficiently.
Improved handling of units makes exported models easier to compare with their native equivalents, while extended Python support allows models containing FMUs to be included in scripted parameter studies. These changes reduce manual work when evaluating system configurations and exploring efficiency improvements.
Application Toolkit
The Application Toolkit brings common pre-processing, post-processing and analysis tools together across Realis Simulation products, helping engineers move from model preparation to design assessment more efficiently.
The 2026.2 release reduces manual preparation and makes simulation results easier to assess:
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R-Geometry carries consistent material properties from CAD bodies into FE mesh preparation and simplifies the review of component mass and inertia with spreadsheet export.
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R-Post adds built-in error bands for model validation, enhanced plot page group management and more flexible parameter sweep plotting. These updates help engineers check model agreement, organise larger analyses and understand how calibration choices affect results across the operating range.
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R-Viewer introduces Derivation calculations for time-wise rates of change and step-wise differences, helping engineers understand transient behaviour. Cloud file extraction simplifies the reuse of thermal data in subsequent studies.