Multiphysics and Systems
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ANSYS for multiphysics and system simulation
ANSYS products for multiphysics and system simulation allow the analysis of complex multiphysical systems by coupling different physical disciplines on field and system level (field and terminal coupling).
Many questions cannot be answered precisely enough by describing individual physical effects. In such cases, a cross-domain simulation model offers the possibility of accurately depicting the real behavior. To reliably investigate complex products, ANSYS' multiphysics portfolio offers proven processes and solutions that can be combined to form powerful tools.
1D System Analyses
Such analyses allow dynamic simulations to be carried out with very short computation times, which is particularly interesting for complex systems. The interactions of several physical fields between different components are represented by conservative links, allowing very intuitive and simple links through the use of two link variables such as displacement-force, voltage-current, pressure-flow, temperature-heat flux and magnetomotor-flow magnetic force. These conservative links, as well as graphical representation tricks, allow complex multiphysics systems to be built quickly and interaction between system sub-parts to be optimized. The creation of blocks based on 2D and 3D simulations can be done automatically by model order reduction or model extraction based on simulated or measured results. This type of modelling is often used in mechatronics.
Some examples:
- Transmission chains with position control by electric motors or mechanical energy sources including mechanical parts and control. For example in the case of a watch, a generator, a turbine, a wind turbine, a gearbox etc..
- Tool machines with structure vibrations, hydraulic or electric actuators as well as a microcontroller and its control logic.
- Hydraulic or pneumatic systems with control valves
- Management of energy, passenger and production flows in systems such as hybrid vehicles, airports, production and distribution chains.
2D and 3D couplings
When the goal of the simulation is the spatial distribution of scalar or vector fields such as, typically, voltage, temperature, heat sources, concentrations, deformations or electromagnetic fields, ANSYS uses either a strong matrix coupling or weak couplings with field transfer between specialized solvers and therefore more efficient. Two long-established strategies:
- Strong matrix coupling is achieved by activating the necessary degrees of freedom in multiphysical elements with the advantage of solving an equation system by a single resolution engine. This allows for convergence with fewer iterations, typically in cases where physical fields are strongly coupled.
- The weak coupling by automatic field transfer between resolution engines allows the greatest flexibility in each discipline. For weakly coupled cases, this method allows to solve each physics in an optimal way (for example on an adapted mesh or with a different time discretization) as well as with smaller matrices, which allows to calculate much faster.
Features
Best-in-class solutions for the simulation of mechanics, fluids, temperature and electromagnetism, which bring out their respective strengths particularly well in combination.
Comprehensive technologies for coupling physical disciplines and development areas such as mechanics, temperature, flow, electromagnetic fields, MCAD, ECAD and embedded software: Scalable models ranging from nano to kilo can be used for the product description (microchip - circuit board - device/oil film - plain bearings - gearbox - powertrain - vehicle).
Open interfaces and standards for flexible work processes and maximum investment protection for software and application-related know-how.
Unified software philosophy that facilitates training, use and licensing.
Qualifizierte Unterstützung durch Experten für einzelne Fachgebiete sowie deren effektive Zusammenarbeit auf Basis einer integrierten Entwicklungsumgebung – alles aus einer Hand.
ANSYS Modules
For coupled tasks ANSYS offers three classes of software modules:
Multiple physics per license offering more choice at a lower price.
These software modules provide field coupling by combining several products. The strengths of the individual solvers can be used in a targeted manner, allowing a modular working process across the entire range of applications.
Software modules for system simulation by means of terminal coupling: integration in ANSYS Workbench combines the advantages of classical system simulation (complexity of computable systems, speed) with those of 3D field simulation (safe and secure modeling)