Fluid Simulation to Improve Lubrication

What is XFlow?

As a component of SIMULIA's Fluids Simulation portfolio, XFlow is a particle-based Lattice Boltzmann technology solver for high fidelity Computational Fluid Dynamics (CFD) applications.

For lubrication workflows like gearboxes and electric motor drives, XFlow delivers multiphase and moving parts modeling capabilities.

XFlow allows users to handle complex CFD workflows involving free-surface flows, complex multiphase flows, fluid-structure interactions, and high-frequency transient simulations with real moving geometries.

XFlow’s automatic lattice generation and adaptive refinement technologies reduce inputs, which helps users minimize time and effort in the meshing and pre-processing phase—meaning engineers can concentrate more of their effort on iterating and optimizing designs.

Users can benefit from extensive insights into system performance regardless of complexity, gear kinds, or lubrication method, this can help reduce the number of physical tests required by providing quantitative forecasts for results.

Key Capabilities of XFlow

  • Single phase flow model
  • Free-surface flow model
  • Multiphase flow models: Particle-based tracking
  • Phase field
  • Scalar transport
  • Discrete phase model (DPM)
  • Thermal Analysis
  • Moving parts with enforced behavior
  • Available on the 3DEXPERIENCE platform

Key Benefits of XFlow

Efficient and Cost Effective

Reduce physical tests, saving time and money spent on prototypes

Improve Development Times

Analyze lubrication performance at any stage of development.

Gain New Insights

Get quantitative predictions of results that can’t be measured experimentally.

Compare and Optimize

Compare many different design variants to optimize trade-offs and maximize performance.

Take Gearbox Design to the Next Level with XFlow

XFlow has unique advantages for lubrication workflows, taking gearbox design to the next level through the ability to analyze powertrain lubrication, moving geometries such as rotating gears or pistons, splashing, wetted area estimation, torque calculation, churning losses and oil jets.

xFlow Lubrication Simulation with Simulia

"Thanks to SIMULIA XFlow, we can test several scenarios— different shapes, wind speed, sea conditions—and get our results quickly to come up with an attractive shape for optimum seaworthiness and fuel consumption."

Piotr Hinczewski
Design Office Director, Sunreef Yachts

With SIMULIA XFlow, we can run endless simulations; we can create abstract shapes and simulate them any way we want—a revolutionary way to design boats.

Michal Krula, Hull Designer and CFD Specialist, Sunreef Yachts Sunreef Yachts

XFlow Product Features

Proven virtual testing with advanced CFD techniques

Beyond Lattice Boltzmann

The Boltzmann equation describes the behavior of a gas modeled at the mesoscopic scale in non-equilibrium statistical mechanics. In contrast to typical Multiple Relaxation Time (MRT), the scattering operator in XFlow is implemented in central moment space, which naturally improves the code's Galilean invariance, accuracy, and stability.

Turbulence modeling: High fidelity WMLES

XFlow's turbulence modeling follows a high-fidelity Wall-Modeled Large Eddy Simulation (WMLES) technique.

Based on the Wall-Adapting Local Eddy (WALE) viscosity model, the underlying cutting-edge LES delivers consistent local eddy-viscosity and near-wall behavior.

Benefits from a Particle-based Kinetic Solver

XFlow has a revolutionary particle-based kinetic algorithm that has been specifically developed to run very quickly on readily available hardware.

Unified Pre-processor, Solver and Post-processor

The pre-processor, solver, and post-processor all work together in the same environment. The User Interface is entirely customizable, with movable workspace windows and the ability to use pre-set display settings.