LMS Imagine.Lab Amesim / STAR-CCM+ co-simulation: electric equipment bay of an aircraft
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Transcript of LMS Imagine.Lab Amesim / STAR-CCM+ co-simulation: electric equipment bay of an aircraft
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LMS Amesim / STAR-CCM+
co-simulation: electric
equipment bay of an aircraftLMS Imagine.Lab Amesim™
A world leading platform for physical
simulation of mechatronic systems
Restricted © Siemens AG 2017
Restricted © Siemens AG 2017
Page 2 Siemens PLM Software
Table of contents
• Introduction to the product portfolio
• Motivation for this co-simulation study
• Setup of the 1D LMS Amesim model
• Setup of the 3D STAR-CCM+ model
• Results of the LMS Amesim / STAR-CCM+ co-simulation
• Going further
Restricted © Siemens AG 2017
Page 3 Siemens PLM Software
Simcenter™ Portfolio for Predictive Engineering Analytics
LMS Imagine.Lab
LMS Imagine.Lab Amesim
LMS
Imagine.Lab
System
Synthesis
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Page 4 Siemens PLM Software
STAR-CCM+
Simcenter™ Portfolio for Predictive Engineering Analytics
STAR-CCM+
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Page 5 Siemens PLM Software
Cloud
Licensing
flexibility
Simcenter™ Portfolio for Predictive Engineering Analytics
Cornerstones for a future-proof engineering approach
Covering full range of
methods
Analytics, reporting &
exploration
Deployment flexibilityOpenness &
ScalabilityUser experience
Industry &
engineering expertiseSystems approach
Collaboration &
workflow
Multidiscipline
& multiphysics
R
F
L
P
Controls
1D
3D
TEST
CFD
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Page 6 Siemens PLM Software
Table of contents
• Introduction to the product portfolio
• Motivations for this co-simulation study
• Setup of the 1D LMS Amesim model
• Setup of the 3D STAR-CCM+ model
• Results of the LMS Amesim / STAR-CCM+ co-simulation
• Going further
Restricted © Siemens AG 2017
Page 7 Siemens PLM Software
Presentation of the electric equipment in an avionics bay
• This study demonstrates the LMS Amesim / STAR-
CCM+ co-simulation feature’s ability to solve dynamic
complex thermal problems with 1D detailed electric
equipment models for testing their cooling efficiency.
• It is focused on the electric equipment in an avionics
bay. It is based on an existing CAD, except it’s
simplified here.
• The aim is to refine the thermal behavior for various
operating points in a multi-physics simulation of an
avionics bay.
STAR-CCM+ has a dedicated user interface to connect to LMS Imagine.Lab Amesim
that makes the co-simulation process easy to set-up.
Airbus A330 avionics bay
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The test case under consideration
Test-case: thermal study of the cooling of electric
equipment contained in an aircraft avionics bay
Typical dissippated power: 3kW • Co-simulation is a valued approach for
improving both 1D and 3D CFD results
• Understand system interactions
• Best of 3D CFD and 1D System worlds
• Addressing RTD partners’ initiatives based
on Aerospace customers’ use cases
• Offering new virtual capabilities
Motivations
3D CFD and 1D system simulation are complementary.
Restricted © Siemens AG 2017
Page 9 Siemens PLM Software
Table of contents
• Introduction to the product portfolio
• Motivations for this co-simulation study
• Setup of the 1D LMS Amesim model
• Setup of the 3D STAR-CCM+ model
• Results of the LMS Amesim / STAR-CCM+ co-simulation
• Going further
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Page 10 Siemens PLM Software
1D LMS Amesim model of the electronic card with its enclosures
Discretization
• 1 electronic card → 6 thermal masses
• 1 enclosure’s face → 1 thermal mass
Physical model
• Convection
• Radiation inside the enclosure
• Conduction between each face in contact.
Representation of the 1D discretization LMS Amesim representation of the electronic card
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1D LMS Amesim model of the electronic card with its enclosures
From
LMS
Amesim to
STAR-CCM+
From
STAR-CCM+
To LMS
Amesim
We choose as many inputs (ports at right)
and outputs (ports at left) as the simulation
requires.
Communication with TCP/IPX2 sketches since 2 enclosures are included
Restricted © Siemens AG 2017
Page 12 Siemens PLM Software
Table of contents
• Introduction to the product portfolio
• Motivations for this co-simulation study
• Setup of the 1D LMS Amesim model
• Setup of the 3D STAR-CCM+ model
• Results of the LMS Amesim / STAR-CCM+ co-simulation
• Going further
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Page 13 Siemens PLM Software
3D STAR-CCM+ model of the avionics equipment bay
• The global volume represents a simplified version
of an avionics equipment bay
• Geometry reduced to rectangular shapes
• Two inlets with the same flow rate model the inlet
diffuser
• Configurable rectangular enclosures
Boundary conditions
• Mass flow inlet controlled (50g/s)
• Tinlet imposed (15°C)
• Pcard imposed, can be time-dependent.
• Calculated mass flow inside each enclosureSimplified part of an avionic bay
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3D STAR-CCM+ model of the avionics equipment bay
Numerical model
• Implicit unsteady
• SST model
• Segregated solver
Hypothesis
• Adiabatic walls
• Pressure boundary conditions at the inlet of
the enclosures
• The thermal behavior of the supports inside
the bay is neglected
Meshing
• 24k polyhedral cells for 2 enclosures
• Boundary layer refinement around enclosures Automatic local mesh refinement
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Table of contents
• Introduction to the product portfolio
• Motivation for this co-simulation study
• Setup of the 1D LMS Amesim model
• Setup of the 3D STAR-CCM+ model
• Results of the LMS Amesim / STAR-CCM+ co-simulation
• Going further
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Page 16 Siemens PLM Software
Overview of the LMS Amesim / STAR-CCM+ co-simulation process
LMS Amesim
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• Evaluates the physics outside the enclosure
• Only fluid domain
• Outputs :
• Heat transfer on each face
• Mass flow inside the enclosure
• Temperature of the fluid coming into the
enclosure
LMS Imagine.Lab Amesim / STAR-CCM+ co-simulation boundary conditions
Temperature in STAR-CCM+ imposed from LMS Amesim
• Evaluates the physics inside the enclosures
• Outputs :
• Temperature on each face of the enclosure
• Temperature of the fluid inside the enclosure
LMS Amesim
STAR-CCM+
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Results of the LMS Imagine.Lab Amesim / STAR-CCM+ co-simulation
• Co-simulation process is accurate
• Complex flow field in the bay
• Coupled behavior between the enclosures
• The position of an enclosure has an impact
on its cooling efficiency
Temperature of each electronic card Temperature profile and streamlines
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Conclusion for this LMS Imagine.Lab Amesim / STAR-CCM+ co-simulation
Airbus A330 avionics bay
Direct interactions: changing the
1D model impacts the 3D model
Challenging Aerospace cases are
addressed with realistic results obtained
Benefit from
best of both
3D CFD and
1D System
worlds
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Page 20 Siemens PLM Software
Table of contents
• Introduction to the product portfolio
• Motivation for this co-simulation study
• Setup of the 1D LMS Amesim model
• Setup of the 3D STAR-CCM+ model
• Results of the LMS Amesim / STAR-CCM+ co-simulation
• Going further
Restricted © Siemens AG 2017
Page 21 Siemens PLM Software
STAR-CCM+ / LMS Amesim co-simulation user guide in LMS Amehelp
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Page 22 Siemens PLM Software
Systems-Driven Product Development
Predictive Engineering Analytics
Role in Systems-Driven Product Development
Predictive Engineering AnalyticsSystem Mockup
Managed in PLM Context - Multi-Domain Traceability, Change and Configuration
TEST
Digital
Twin
1D
CFD
Exploration - Analytics - Reporting
3D
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3D SIMULATION
CFD SIMULATION
1D SIMULATION
From disconnected models and data …
Customer Usage data
Simulation data
Test data TEST MODELING
Historical data
CONTROLS
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…to a performance Digital Twin
3D SIMULATION
CFD SIMULATION
1D SIMULATION
Customer Usage data
Simulation data
Test data TEST MODELING
Historical data
CONTROLS
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Page 25 Siemens PLM Software
Contact
Karim NASSAR & Stéphane NEYRAT | LMS Amesim Platform
Deniz UNLU & Olivier BROCA | LMS Amesim Aerospace and
Defense
Peter MENDOZA & Joe OSMAN | CD-adapco
Siemens Industry Software S.A.S.
Digital Factory Division
Product Lifecycle Management
Simulation & Test Solutions
DF PL STS CAE 1D | CD-adapco
siemens.com