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nanoFluidX Overview

nanoFluidX is a particle-based fluid dynamics simulation tool to predict the flow in complex geometries with complex motion.

nanoFluidX Product Brochure Introduction to nanoFluidX, a particle-based fluid dynamics simulation tool to predict the flow in complex geometries with complex motion. Read More
The Essence of Smoothed Particle Hydrodynamics nanoFluidX: GPU-Powered SPH Code for Powertrain Oiling Simulations. Read Blog Article
nanoFluidX can be used to predict, for example, the oiling in powertrain systems with rotating shafts/gears and analyze forces and torques on individual components of the system or predict the sloshing in tanks with transient motions. Utilizing the GPU technology empowers high performance simulations of real geometries.
“nanoFluidX provides customers with a unique and powerful set of simulation capabilities for challenging industry problems in CFD like powertrain oiling or tank sloshing. The ultra-fast simulations based on GPU technology make the software unrivaled in quality and efficiency.”
–Dr.-Ing. Thomas Indinger, CEO
FluiDyna GmbH


The particle-based nature of the nanoFluidX code allows for an elegant and efficient approach to flows which undergo high deformation during the simulation, such as sloshing, violent multiphase flows or rapid movement through complex geometry.

General free-surface flows

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

High-density ratio multiphase flows

The Smooth Particle Hydrodynamics (SPH) method of nanoFluidX allows for easy treatment of high-density ratio multiphase flows (e.g. water-air) without additional computational effort. The fluid interfaces are a natural by-product of the SPH method and no additional interface reconstruction is required, therefore saving computational time.

Rotating gears, crankshafts and connecting rods

nanoFluidX has implemented options for prescribing different types of motion, therefore simulating rotating gears, crankshafts and connecting rods comes easy. Measure forces and torques experienced by the solid elements as they interact with the surrounding fluid.

Tank sloshing

Measure forces experienced by the tank or a vehicle during drastic acceleration, e.g. braking or sudden lane change.

GPU computing

FluiDyna GmbH is an Nvidia Preferred Solution Provider, allowing the nanoFluidX team a competitive edge in terms of code optimization and performance. GPU computing provides a significant performance advantage and power savings with respect to their more cumbersome CPU counterparts.

For a moderate size case (300.000 particles), with the following hardware specifications: 96 CPU cores, 8 nodes, dual socket, 6-core CPUs Vs. 4 Nvidia K40 GPUs, you get around 33% savings in hardware cost, 63% faster runtime and 74% less used energy!*

Simplified pre-processing

Mesh in a classic sense is not needed. Import the geometry, select the element and generate the particles. No more hours of pre-processing and devising a good-enough mesh.

Rigid body motion

Besides the 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.

*The quoted numbers are case and configuration dependent.

Industry Applications

nanoFluidX is ideal for the following industrial applications:

Powertrain: Oil flow simulation in rotating gearbox

Automotive and Aerospace: Tank sloshing simulations

About FluiDyna GmbH

FluiDyna provides a wide range of research and development services. Being comprised of the terms “Fluid” and “Dynamics”, the company name already indicates our know-how and ultimate competitive edge. Our core expertise lies particularly in the development and application of numerical methods for flow simulation and thermodynamics. Additionally, we are experts within the demanding field of GPU-based High-Performance Computing for fluid mechanical problems. FluiDyna provides assistance for both customers who require advice on how to configure a GPU-based supercomputing system and for companies and institutions with a need for individually programmed, customized software for CFD. Many customers reaching the limits of their current software toolchain approach FluiDyna to create perfectly tailored tools and to take over the modeling and simulation of fluid mechanical challenges.

Founded in 2006, the company already has excellent references and partnerships, which include Altair Engineering, Inc. FluiDyna’s solutions have been commissioned by research institutes and public-sector clients as well as by the industry, particularly manufacturers and suppliers of passenger and commercial vehicles, civil and military aircrafts as well as the pharmaceutical industry and its suppliers.


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Time averaged streamlines in a 4-cylinder engine (bottom view) Time averaged streamlines in a 4-cylinder engine (side view) Time averaged streamlines in a 4-cylinder engine (front view) Instantaneous splashing of oil in a generic gearbox. Oil distribution in a 5-speed gearbox operating at 1000 RPM. Time averaged streamlines in a 5-speed gearbox operating at 1000 RPM.
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