Flexible Structures in Aerodynamics and Machinery Design

Reference Applications

When a surrounding fluid exerts pressure on a flexible structure, this structure deforms, which leads to changes in the flow field of the fluid. These so-called fluid-structure interactions appear in different application areas: the most common examples are wings, spoilers and other deformable parts of racing or everyday cars or the flutter of aircraft wings. Furthermore, this effect can be observed in many machines, especially where moving parts or light, very deformable walls are involved. Typical examples are valves, pumps or hydraulic engine mounts. MpCCI has been used successfully to solve different applications from all of these areas:

© Fotolia – nerthuz / Fraunhofer SCAI

Why FSI is so Important to Win the next Race in Formula1

With Formula 1 being one of the most popular motorsports on the globe, there is always high pressure to provide excellent performance as a way to retain existing and attract new audiences. As the FIA regulations are quite clear-cut in terms of limitations leading to a close competition, engineers are digging for the smallest advantages. This leads to taking interactions of CFD with other physical effects into account to get a complete understanding of all effects involved. MpCCI CouplingEnvironment from Fraunhofer SCAI has been integrated into the design workflows of leading F1 teams and is successfully used to optimize the aerodynamic behavior of the car while taking the structural behavior into account.

Recent Progress in Flow Control for Practical Flows
© Springer Verlag
Recent Progress in Flow Control for Practical Flows

Recent Progress in Flow Control for Practical Flows

This book explores the outcomes on flow control research activities carried out within the framework of two EU-funded projects focused on training-through-research of Marie Sklodowska-Curie doctoral students. The main goal of the projects described in this monograph is to assess the potential of the passive- and active-flow control methods for reduction of fuel consumption by a helicopter. The research scope encompasses the fields of structural dynamics, fluid flow dynamics, and actuators with control. Research featured in this volume demonstrates an experimental and numerical approach with a strong emphasis on the verification and validation of numerical models. The book is ideal for engineers, students, and researchers interested in the multidisciplinary field of flow control.

Chapter 15 "Analysis and Optimization of Flow Around FlexibleWings and Blades Using the Standard Co-simulation Interface MpCCI" will give some valuable examples on how MpCCI has been used to calculate and optimise different wing configurations.

© Fraunhofer SCAI

Aero-Elastic Benchmark Cases using Coupled Fluid-Structure Code Combinations

Using MpCCI to couple MSC.Nastran and Ansys Fluent, different benchmarks from the area of aero-elasticity, most importantly the HIRENASD benchmark, have been simulated. The results of the coupled FSI simulations are compared to experimental measurements.

© Fraunhofer SCAI

Numerical Simulation of Fluid-Structure Interaction in the Design Process for a New Axial Hydraulic Pump

With the help of numerical simulation, a new high-pressure hydraulic axial pump has been developed at Gdansk University. To find an optimal layout of the different pump chambers, coupled FSI simulations, using Abaqus, Fluent and MpCCI, were used.

© 2014 by University of Duisburg-Essen

An Enhanced 1-Way Coupling Method to Predict Elastic Global Girder Loads

To predict global hull girder loads of sea-going vessels, the structural elasticity has to be taken into account. A one-way-mapping of the CFD external loads at the hull surface to a FEA 3D model of the hull computing the structural response has been realized by employing MpCCI.