Multiphysics for designers / Applications

Applications

FSI

Aerostatic bearing

This example models a jet acting on a bearing. This jet creates a thin layer of air between the bearing and the support. The force acting on the bearing permits to compensate the gravity force.
The figure represents the jet with arrows indicating the direction of the flow. It can be seen that a vortex is created between the bearing and the support. Particles Tracking (coming from the jet) has been used to visualise this vortex.
This application has been solved with OOFELIE coupled with FINE™/Hexa.

Compressible flow in a duct with a moving part

This example models a 3D duct whose upper part has can oscillate. The fluid flow is supposed compressible. The Von Mises constraints are represented on the structure and the velocity field is plotted in the fluid domain.
This application has been solved with OOFELIE coupled with FINE™/Hexa.

More examples in FSI

Optical Devices

Industrial multiphysics design for optical devices

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A growing number of high precision optical systems has to perform in harsh conditions. For example, the space and medical industries raise the standards for the design of optical devices that need high dimensional stability, increased accuracy and predictable performances.

That is why in these markets it is often necessary to combine real-life tests with Multiphysics CAE. But a preliminary experimental validation of the numerical solution is mandatory to ensure the very high precision level required for optical applications.

This integrated opto-thermo-mechanic design flow will enable you to speed up the development process and increase the reliability of your devices at a reduced cost.

This seminar was given by Open Engineering , AMOS and CSL on April 26th 2012

Position Control of a Segment of the E-ELT

The application shows how to use a multiphysics software solution to perform integrated simulation of multiphysics controlled systems. In this particular case a control loop is implemented with 12 sensors to drive the position of 3 piezoelectric actuators.

More examples in Optics

MEMS devices

微机电系统中的电容器

微机械可变电容器被用于射频微机电系统,单片电压控制振动器,加速度计,陀螺仪和变容二极管。

如果您想对半导体元件进行结构-热-流体-电-光等场的耦合模拟,您需要把CADENCE virtuoso, Tanner EDA,和EEsof ADS等电子自动化工具相结合使用,因为这样就允许同时模拟电子元件中的所有部件。

The Microsystem design flow: From Layout to Packaging

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MEMS (Micro Electro Mechanical Systems) conquer our daily lives. They are everywhere: in our cars, at the doctor's office as well as in the plane that takes us to our vacation. But today it lacks an effective response to the demand for reliability of the different actors. In this lecture we will show you how a complete and systematic design flow for MEMS based systems will yield higher quality MEMS based microsystems that are able to operate in harsh environments (temperature, vibration, humidity, corrosion, high voltage ...) while being more power efficient, autonomous and reliable than the classic components they are replacing.

The Seminar was given by Open Engineering, TAIPRO Engineering and SoftMEMS

More examples in MEMS

Fluids devices

Thermo-dynamic flow inside a duct

This application illustrates the 2D transport of the temperature in a duct with a cylinder placed in its middle. The fluid flow has been computed at a first time. Then the transport of the temperature has been computed (a different value of the temperature has been imposed at the inlet and on the walls). The diffusion of the temperature in the cylinder has also been computed with equality of the values at the interfaces.

Inviscid flow around a car

This example illustrates a simple incompressible inviscid flow around a car (fluid can go above and under the car), modelled with a simplified geometry. A mesh made of only tetrahedrons has been used. Streamlines of the flow are represented on the following figure.

More examples in Fluids

Electromechanical devices

压阻式压力传感器

压阻式半导体材料印在柔性膜结构上。当这种结构延伸的时候,其电阻改变。测量电路可以同内置的电子元件一起模拟。

Electromagnetic actuation (Magnetodynamics)

This last application is the simulation of the electromagnetic actuation of a very small conductor pipe with ellipsoidal cross-section. This kind of actuation allows for example to control a fluid flow passing through the pipe by sequencing the different coils placed along the wall.

More examples in Electro-Technics

EDA link

Export to EDA

Model Order Reduction (MOR) techniques can be applied to many fields of activities.

This feature is intensively used in the microsystems (MEMS) component design procedure. Indeed, simulations at circuit level require accurate compact models of the MEMS components, also called behavioural models or reduced order models (ROM), to be generated from 3D expensive numerical model. These reduced models are written in HDL (Hardware Definition Language) and inserted, in a schematic form, is specific microelectronic simulators.

OOFELIE::Multiphysics comes with capabilities to generate reduced order model from full 3D numerical simulation and export them in VHDL-AMS or Verilog-A format for co-simulation in EDA simulators (TANNER, Synopsys, Mentor)

More examples in Reduction

VibroAcoustics devices

Coupled eigenmodes extraction of a water-filled tank

The coupled eigen modes of a water filled tank are extracted using OOFELIE::VibroAcoustics package. In this case, even if we are not interested in acoustic field inside the cavity, we have to take it into account since it has a strong impact on the behaviour of the global system. In this example, the mesh mapping algorithm was used since the acoustic and structural mesh are incompatible.

Acoustic radiation prediction of engine

An example of acoustic radiation problem using the mesh mapping capability is showed here. We have the structural CAD model (simplified real model, for confidentiality reasons, presented on Figure « Engine CAD model ») and an acoustic CAD model.

More examples in VibroAcoustics

Piezoelectric devices

环形APA驱动器

环驱动器是由两个金属环和2个压电栈构成。电位通过中心金属片施加于2个压电栈。由于施加的电位,这两个压电栈将收缩并且诱导驱动器顶部的横向位移。这种类型的驱动器设计的主要目标是高精度定位。

振动惯性加速计

Onera制造了对正交加速很敏感的单片石英传感器。这一感念通过解耦系统解耦,从而有效地与外部振动梁相分离。 它允许最大化振动品质因数,这也是频率稳定所需要的。

整个装置-包括传感器模块都是由Oofeilie软件模拟的,因为它能建立所需要的压电-热-弹性强耦合模型。

当热弹性阻尼是空间(零重力)和真空应用的关键因素,谐振梁被压电所激活。同时,热应力影响频率的行为必须达到最小化。

欲了解更多,请参考 Onera网页 (法语)

More examples in PiezoElectricity

PiezoVibroAcoustics devices

Piezoelectric loudspeaker

Combining the piezoelctric and vibroacoustics capabilities of Oofelie enables studying the behaviour of loudspeakers systems where the vibrating membrane is actuated using piezoelectric strips.

More examples in PiezoVibroAcoustics