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Multiphysics Solution Product Features
Analysis Classes
Structural
Static, dynamic and time transient
Natural frequency, harmonic and
spectrum response
Random vibration
Topological optimization
Thermal
Steady-state or transient
Conduction
Convection
Radiation
Phase change via enthalpy
Electrostatics
H and adaptive p-elements
Hybrid FEA/BEA domain
Magnetostatics
2-D and 3-D magnetic vector potential
(MVP) and scalar formulations
3-D edge element formulation
Ion Optics
Trace charged particles in electric or
magnetic static fields, or both
Plot trajectories in 2-D, 3-D or listed
current conduction
Joule heating and coupled heat
transfer
Currents can be used for
magnetostatic excitation
CFD
Steady-state, time transient
Incompressible, compressible
Laminar, turbulent
Acoustics
Fully coupled fluid-structural
Harmonic, transient and modal
Multiphysics Solution
The Most Comprehensive Coupled Physics Solution
The ANSYS
®
Multiphysics
TM
solution provides the analysis industrys most
comprehensive coupled physics tool combining structural, thermal, CFD, acoustic
and electromagnetic simulation capabilities in a single software product. With the
ANSYS Multiphysics solution, users can realize the benefits of the core physics of
the entire ANSYS simulation suite in one convenient package. Applications include
rotating machines (motors and alternators), sensors and actuators, power
generators and transformer systems, and micro-electro mechanical systems (MEMS).
ANSYSMultiphysics software is a general-purpose analysis tool that allows users to
combine the effects of two or more different yet inter-related physics within one
unified simulation environment. Many classes of physics are provided.
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An ANSYS Multiphysics analysis of a thermoelectric (Peltier) effect cooler
11.0 RELEASE Coupled Physics
The ANSYS Multiphysics solution provides two powerful methods to couple multiple
physics together Direct and Iterative.
Direct
Solves coupled physics equations directly
Solves each physics simultaneously
Iterative
Physics coupled by passing loads across physics field interfaces
Solves each physics simultaneously or sequentially
At least two iterations, one for each physics, in sequence are needed to achieve
a coupled response
Providing both coupling methods allows the ANSYS Multiphysics solution to address an
extremely broad range of analysis applications.
Dir
Product Features
Low-Frequency Magnetic
Quasistatic magnetic
Time-harmonic analysis for linear
materials
Time-transient analysis for linear and
nonlinear materials
2-D and 3-D magnetic vector potential
(MVP) formulation
3-D edge flux formulation
Low-Frequency Electric
Quasistatic electric
Time-harmonic analysis for linear
materials
Time-transient analysis for linear
materials
Joule heating and coupled heat transfer
Currents can be used for magnetostatic
excitation
High-Frequency Electromagnetic
First- and second-order tangential
vector elements
3-D brick, pyramid, prism and
tetrahedral element shapes
Cavity modal analysis
Harmonic analysis: wave propagation,
radiation and scattering
SPICE equivalent circuit output
Circuit Analysis and Coupling
Static, harmonic and transient
SPICE-like circuit elements
Resistors, capacitors, inductors, diodes,
transformers, voltage and current
sources
Easy-to-use circuit builder GUI
Coupling to electrostatic analysis
Coupling to stranded and massive
conductors
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Table showing direct and sequential coupled physics available with the ANSYS Multiphysics
solution and some typical applications
Direct Coupled Physics
Pressurestructural (Inviscid FSI)
Piezoelectric
Piezoresistive
Circuit coupled electromagnetics
Electrostaticstructural
Electrothermalstructural
magnetic
Fluid-thermal
Interative Coupled Physics
Thermalstructural
Electromagneticthermal
Electrostaticstructural-fluid
Electrostaticcharged particle
Magneticstructural
Fluid structure interaction
ThermalCFD
Multi-field solver
Third-party product coupling:
Sigfit: unidirectional, structural
optical
Applications
Acoustics, sonar, SAW
Microphones, sensors
Pressure sensors, strain gauges,
accelerometers
Motors, MEMS
MEMS
IC, PCB, electro-thermal stress,
MEMS actuators
Piping networks, manifolds
Applications
Gas turbines, anything
with a structure
Induction heating, RF heating
MEMS
Ion optics, field emission display
technology, analytical instruments
Solenoids, electromagnetic machines
Aerospace, automotive fuel, hydraulic
systems, fluid-bearing, MEMS fluid
damping, drug delivery pumps,
heart valves
Electronics cooling
Many, all of the above
Automotive lighting, astronomy, any
optical instruments
11.0 RELEASE ANSYS Multi-field Solver
In recent years, there has been an increase in the number of industries/applications
needing to solve coupled physics problems. The ANSYS
®
Multi-field solver provides
an easy-to-use framework to solve coupled field problems in many new markets and
applications in which solutions have not existed in the past. The Multi-field solver is a
general purpose, automated iterative coupled physics solver ANSYS applicable across
all physics and available in the ANSYS Multiphysics solution. The Multi-field solver is
an evolution of the successful fluid solid interaction (FSI) solver fromANSYS, Inc.
Key Features of the Multi-field Solver
Each physics treated as a field with an independent model and mesh
Dissimilar mesh allowed for each field
Any number of physics fields allowed
Surface and volumetric loads transfer across physics fields
Iterative (load vector) coupling is between fields and each field may have
different:
Analysis types (transient, static or harmonic)
Solvers and analysis options
Mesh descretization
Automated morphing of non-structural elements
Material and geometric nonlinearity
Independent results files for each physics field
Coupling with ANSYS
®
CFX
®
for fluid structure interaction (FSI) applications:
Multi-field solution is distributed between more than one product (for example,
between ANSYS Multiphysics and ANSYS CFX)
An important feature of the Multi-field solver is the dissimilar mesh interface allowed
between each physics field. Independent users can build and set up their physics
analysis field instead of having to rely on a super-physicist to handle all aspects of
the multiphysics analysis. The dissimilar mesh interface allows more efficient
meshing of physics fields, resulting in more-compact finite element models with faster
solution times.
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Product Features
Materials, Boundary Conditions and
Effects
3-D and 2-D planar and axisymmetric
geometry
Geometric nonlinearity: large strain and
deflection, stress stiffening and spin
softening
Coriolis effect
Material nonlinearity: plasticity, hyper-
elasticity, viscoplasticity, viscoelasticity,
creep, swelling
Contact, cracking, crushing
Thermo-elastic damping
Permeable and non-permeable domains
Current and voltage excitation
Stranded coils and massive conductors
Biot-Savart coils
Capacitive and inductive effects
Velocity effects, eddy and displacement
currents
Lossy dielectrics
Inductance and capacitance matrix
calculations
Cyclic symmetry
Electromagnetic and thermal contact
Electromagnetic force
Force coupling to structural
Piezoelectric and piezoresistive
materials
Thermoelectrics: Joule heating,
Seebeck, Peltier and Thomson effects
Newtonian and non-Newtonian fluids
Free, forced or mixed convection heat
transfer
Surface-to-surface radiation heat
transfer
Fluid-free surface boundaries
The Multi-field solver allows an analysis problem to be distributed so separate
physics can be processed by individual analysis experts sharing a common
CAD model in your company.
Physics 1 Engineer
e.g., CFD
Model pre-processing
(loads, boundary
conditions & mesh)
Multi-Field
Multi-Field
Analysis
Analysis
CAD Model
Physics 2 Engineer
e.g., Electromagnetics
Model pre-processing
(loads, boundary
conditions & mesh)
Physics 3 Engineer
e.g., Structural
Model pre-processing
(loads, boundary
conditions & mesh)
Physics 4 Consultant Engineer
e.g. HF Electromagnetics
Model pre-processing
(loads, boundary conditions
& mesh)
Intra-Company Resource ANSYS, ANSYS Workbench, AUTODYN, CFX, FLUENT and any and all ANSYS, Inc. brand, product, service and feature names, logos and
slogans are registered trademarks or trademarks of ANSYS, Inc. or its subsidiaries in the United States or other countries. ICEM CFD is a
trademark used under license. All other brand, product, service and feature names or trademarks are the property of their respective owners.
Image Credits: Some images courtesy Aavid Thermalloy, ICT Prague and Silesian University of TechnologyInstitute of Thermal Technology.
©2007 ANSYS, Inc. All Rights Reserved. Printed in U.S.A
MKT0000203
12-06
Toll Free U.S.A./Canada:
1.866.267.9724
Toll Free Mexico:
001.866.267.9724
Europe:
44.870.010.4456
eu.sales@ansys.com
ANSYS, Inc.
Southpointe
275 Technology Drive
Canonsburg, PA 15317
U.S.A.
724.746.3304
ansysinfo@ansys.com
Product Features
Materials, Boundary Conditions and
Effects for HF Electromagnetics
Complex permittivity and permeability
Frequency dependent material
properties
Loss