Computational Fluid Dynamics and Multibody Dynamics Modeling | SRI International

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Computational Fluid Dynamics and Multibody Dynamics Modeling

SRI provides high-fidelity computational fluid dynamics (CFD) analysis and comprehensive physics-based system multibody dynamics (MBD) modeling

Computer simulation tools are playing an increasingly critical role in understanding complex systems. SRI has developed sophisticated analytic and modeling capabilities for faster, more accurate simulations of fluid and multibody dynamics.

Advances in technology have reduced the cost of conducting multiple numerical experiments relative to a single field (or laboratory) experiment, opening possibilities for new applications and opportunities. Once a model has been validated and verified against experimental data, opportunities abound for using the model to explore the parameter space of a design study.

SRI’s high-fidelity computational fluid dynamics (CFD) analysis for aerodynamics and hydrodynamics includes free-surface volume of fluid (VOF) simulations, turbulence modeling, and external aerodynamics and hydrodynamics. Our researchers use tools such as OpenFOAM to conduct complete analysis (pre-processing, simulation, and post-processing) of fluid flows. Prior work has included airfoil analysis, ocean free-surface wave modeling, viscoelastic Reynolds-averaged Navier-Stokes (RANS) modeling, and submerged body hydrodynamics.

SRI researchers also developed comprehensive physics-based multibody dynamics (MBD) models for complex systems using tools such as MSC Software’s ADAMS. Our MBD modeling capabilities include rigid body dynamics, coupled with aerodynamic and hydrodynamic forcing (derived from CFD analysis). Researchers combined MBD analysis with controls system modeling to simulate complete dynamic system response to external forcing. Applications include autonomous vehicle development and wind power generation.