Altair nanoFluidX™

Particle-based Fluid Dynamics Simulation

nanoFluidX® is a smooth particle hydrodynamics (SPH) simulation tool to predict fluid flow around complex geometries while in complicated motion. It is used for a variety of applications such as simulating oiling within conventional high-performance or electric vehicle powertrain systems comprising rotating gears, analyzing forces on individual components of the system or water management (wading, sloshing…).

It enables engineers to optimize efficiency by reducing friction or heat losses, improve reliability and safety, while limiting mechanical stress and hot points, or reduce fatigue.

Optimized for use on clusters of graphical processing units (GPUs), it is extremely fast. For typical gear-train applications, without the need to simplify geometries, simulations can run an order of magnitude faster than a finite volume code.

nanoFluidX Overview Video

Why nanoFluidX?

Accessible Complex Geometry Flow Analysis

Simplified workflows make advanced simulations possible by non-CAE experts: meshless method, multi-phase capabilities, and GPU-based technology to accelerate delivery of accurate predictions, despite complexity.

Optimize Equipment Performance and Reliability

Understand flow around complex geometries including rotating parts, to limit friction and oiling operations, reduce mechanical stress, prevent fatigue failure or avoid hotspots.

Frontloading Complex Geometry Flow Prediction

Make strategic decisions earlier in the engineering processes using high-performance, cost-effective simulation to understand the design.

Key Features

Simplified Pre-processing

No need for mesh in a classic sense. Import the geometry, select the element, and generate the particles. No more hours of pre-processing and devising a good-enough mesh.

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General Free-surface Flows

Simulate sloshing of oil in powertrain systems, free flowing fluids in an open environment, open or closed tanks under high accelerations and similar phenomena.

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High-density Ratio Multiphase Flows

The SPH method of nanoFluidX enables easy treatment of high-density ratio multiphase flows (e.g. water-air) without additional computational effort.

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Tank Sloshing

Accurate measurement of the forces experienced by the tank or vehicle during drastic acceleration, like braking or sudden lane change, by tank sloshing simulation.

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Rotating Motion

nanoFluidX has implemented options for prescribing different types of motion, therefore simulating rotating gears, crankshafts, and connecting rods in powertrain applications comes easy.

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Rigid Body Motion

Besides rotational motion, the nanoFluidX code allows for element trajectories prescribed by an input file. Study the interaction of an arbitrary translationally moving solid and the surrounding fluid.

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