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DIESEL PROGRESS N O RTH A M ERIC AN EDITIO N Februa ry 2003

North American Edition

Ricardo Software, the BurrRidge, Ill., division of Ri-cardo Inc., has unveiled the

latest addition to its engine modelingsoftware package. WAVE v5 is a one-dimensional gas dynamics simulationsoftware suite designed for simulationand modeling of air and combustion gasflowsin diesel and gasoline engines.

WAVE is designed to enable per-formance simulations to be carried outbased on virtually any intake, combus-tion and exhaust system design. Typicaldevelopment applications include:

Engine performance and turbo-charger matching.

Intake and exhaust system design.Coupled engine control and drive-line simulation.

Advanced diesel and spark-ignitioncombustion analysis.

Thermal analysis of combustionchamber components and exhaustsystem warm-up.

WAVE v5 now features more ad-vanced preprocessors such as a built-in knowledge-based 3D ComponentModeler/Automatic Mesher (Wave-Build3D) and a WAVE CAD mesherfrom STL import. These new preproc-essors enable users to create complexmodelsvery quickly and accurately, thecompany said.

Another key attribute of the newest

WAVE generation involvesitsability toautomate key elements of the simula-tion process. According to the compa-ny, current generation 1D simulationprograms entail significant time spentpreparing the engine flow network, anactivity that adds little engineeringvalue. WAVE v5 providestoolsto auto-mate thisroutine activity, which reducesthe development cycle time. WithWAVE v5,userscan now automate the

preprocessing of engine flow networksespecially complex/irregular geome-tries such as manifolds, catalysts, aircleaners, etc. using tools such as theWAVE CAD mesher and the newbuilt-in solid modeler, said FawzanAlsharif, businessdevelopment managerat Ricardo Software.

WAVE v5 also provides tools forautomating run sweep generation, per-forming parametric designsand mathe-matical operationsfor the manipulationof input data, aswell asabuilt-in auto-calibration capability where users canautomate the task of matching simula-tion results with measured data. Thesefeaturescan significantly reduce develop-ment cycle time, the company said. Inaddition, the software incorporatesintel-

ligent defaults, based on Ricardosexpe-rience, to any engine model flow net-work component created with WAVE.Optimization using DoE isalso possible,using simple manual tuning tools.The new software contains upgrades

and additions in the areas of three-dimensional component automation,

advanced physical models, post-processing and usability. It allows usersto get results faster and provides mod-els for predicting engine-out emis-sions, the performance of aftertreat-ment systems and the behavior ofmore complex combustion systems. Italso incorporates enhancements to itsvariable valve timing capability and canmodel variable geometry turbochargercharacteristics.

Ricardo Unveils Next Generation

Engine Simulation Software

Ricardo has introduced WAVE v5, a one-dimensional gas dynamics simulation software

suite designed for simulation and modeling of air and combustion gas flows in diesel

and gasoline engines.

designtechnology

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1D codestypically allow themodel-ing of combustion using input combus-tion data (correlational models) or bymeansof predictive/empirical models,Alsharif added. WAVE v5 standsout inthat it provides full 3D CFD capabilityfor modeling diesel combustion. Thisshould allow engine performance ana-lystsin the diesel industry to perform themost complex combustion calculationfrom within the WAVE environment,while benefiting from WAVEscapabili-ties at producing results for the overallengine system designs.

WAVE v5 also allows the user toimport STL filesand easily mesh acom-plex component using the new WAVECAD Mesher. This provides, R icardosaid, higher productivity and lower user-to-user modeling variability enabling aprocess of mesh to model in minutes.Designing components occurs at acomponent level, so thisisalmost like aparadigm shift, said Alsharif. Tradi-tionally, 1D simulation codes allowed

modeling flow networksusing primitiveobjectssuch asductsand junctions.The new XML file format tech-

nology allows modeling, storage andmodification of components using thenew component browser that allowsmanagement of component reposito-ries, such as intake manifolds, exhaustmanifolds or engine resonators.

design technology

WAVE v5 is designed to enable per-

formance simulations to be carried out

based on virtually any intake, combus-

tion and exhaust system design.

Another key attribute involves its ability

to automate key elements of the simu-

lation process.

North American Edition