3D-CFD simulation to investigate both conventional and electrified powertrains

3D-CFD Analysis

PWT leverages state-of-the-art methodologies developed over 10+ years of experience to support its customers in the 3D-CFD characterization of complex systems’ fluid-dynamic performance.

We can perform single-component fluid-dynamics analyses using the most suitable software in a timely manner, thanks to our dedicated HPC cluster.
Stemming from PWT’s consolidated experience on ICEs, its experience in 3D-CFD simulations now covers a broad range of applications, including cooling circuits and e-machines, using RANS simulations as well as DES and LES methodologies:

Single phase simulations
• Assessment of flow development within complex circuits using virtual flow-benches
• Characterization of pressure drops and flow uniformity indexes
• Charge motion characterization in ICEs’ combustion chamber (swirl, tumble, etc.), assessment of turbulence development, internal EGR
• 1D/3D-CFD coupled simulations: assessment of 1D systems performance with detailed 3D-CFD modelling of specific components

Multiphase simulations
• Simulation of liquid injection and spray development for different liquids
• Assessment of liquid film formation and development, including Conjugate Heat Transfer modelling
• Assessment of mixture preparation in ICEs, in-cylinder lambda distribution
• Calculation of oil-dilution risk, cylinder and valve wetting risks in ICEs
• Assessment of water injection system’s performance
• Detailed modelling of SCR systems, including Urea-Water-Solution dynamics and Conjugate Heat Transfer modelling w/ specific speed-up strategies



Combustion simulations
• Predictive combustion simulations using detailed chemistry and advanced combustion models (RANS and LES methodologies available)
• Predictive combustion RANS simulation methodology for Turbulent Jet Ignition (TJI) engines
• Support in the development of new combustion chamber geometries and combustion concepts
• Assessment of knock risk, identification of knock-prone regions, detailed simulation of knock events
• Evaluation of pollutant formation, usage of detailed model for SOOT formation (chemistry based)

Heat transfer
• Assessment of cooling systems’ fluid-dynamic and thermal performance including Conjugate Heat Transfer modelling (e.g. battery cooling circuits, water jackets, etc.)
• Calculation of metal temperature and heat transfer paths in thermal systems (e.g. battery cooling plates, thermal barriers surrounding hot-flowing gases, etc.)
• Optimization of gaskets design to achieve target coolant distribution

• Assessment of flow-noise risk by means of RANS indexes
• Detailed modelling of aeroacoustics phenomena and jet-flow noise, calculation of near-field acoustic spectra

1D Powertrain and Vehicle Simulation

SiL/HiL & Real-Time modeling


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