Multiphysics simulations are widely investigated, but not that commonly applied in industrial cases. Due to their complexity, one may need to couple different numerical methods to achieve satisfying results.

Using multiphysics simulations allows the interaction between different physical phenomena to be captured. This proved a more complete understanding of system behaviour when compared to, for example, separate structural and fluid simulations do in isolation.

In this blog we will discuss the process to determine movement of bodies due to a fluid flow, performed with XFlow CFD. As an example we have taken a historic measurement device called a "Wildse Vaan".

This weeks blog is about hydrofoiling. One of my personal hobbies is watersports. I love sailing, windsurfing, wakeboarding and other challenging water related balance-sports. Normally I spend my summer in a warm country along the sea, or at least close to it. Due to Covid-19 we will stay in our own country this year, but there is still plenty sea along the shore of Holland. During the lockdown period, I watched some videos during the evening-hours on youtube where hydrofoiling is done for windsurfing & kitesurfing. Although I have never done it myself yet, it seemed a very cool thing to start trying out this summer. Being a Simulation addict, I first wanted to get an impression how dificult this is by virtually assessing the concept of it by use of SIMULIA XFlow CFD.

In this blog post, we will be showcasing a fully coupled fluid structure interaction (FSI) analysis, of a peristaltic roller pump. This study will focus on assessing the performance of a peristaltic pump, under operation. This co-simulation analysis, will solve for both the structural and fluid domains' unknown quantities, during 1 revolution of the rotating mechanism of the pump.

This is an example of a challenging application, in which numerical modelling and computer simulations can provide a lot of insight and value.

The aspects we want to evaluate in this digital model are; determining the volume flow-rate for a given rotation speed, assessing contact stress areas on the tube, and determining the torque output for the given rpm.

Simuleon is organising another unique hands-on workshop called "Introduction to XFlow CFD".

Our classroom style workshop will be held in English language at our office location in 's-Hertogenbosch, the Netherlands. This is the ideal way to understand and try-out, what advanced CFD simulation, with SIMULIA XFlow CFD can offer.

Simuleon will give another unique workshop, called "Introduction to XFlow CFD".

Our classroom style workshop will be held in English language at our office location in 's-Hertogenbosch, the Netherlands. This is the ideal way to understand and try-out, what advanced CFD simulation, with SIMULIA XFlow CFD can offer.

In the current post, we will be focusing on introducing XFlow CFD by demonstrating an aerodynamic effect primarily observable in spheres or cylinders following certain trajectories while spinning at the same time.

This effect is known as the Magnus effect, associated with spinning objects. A sphere for example travelling through mid-air while spinning at the same time , will drag air faster around one of its sides. This will consequently create a pressure gradient between the sides of the sphere, thus creating a lift force that will alter the sphere’s trajectory compared to a case with no spin.  The lift force generated is equivalent to that of an airfoil, only the origin of the necessary air recirculation around the body is by mechanical rotation (the spin)  and not by aerodynamic design ( the airfoil).

XFlow is a next generation CFD software based on the Lattice-boltzmann method designed for a broad range of computational fluid dynamics simulations. XFlow’s  latest release supports coupling with Abaqus for performing fluid structure interaction analyses.

The Magnus effect will be demonstrated with a spinning football analysis in XFlow.