SAME: climatizzazione di un trattore agricolo

Transcript

ANSYS CFD MODULES
Outline
• ANSYS CFD Suite – Modules & Structure
– ANSYS Meshing for CFD @V17
– ANSYS CFD Professional
– ANSYS CFD Flo
– ANSYS CFX
– ANSYS FLUENT
– ANSYS CFX/FLUENT/CFD extra capabilities
– Bundled & unbundled solutions
– Other CFD related product
• ANSYS CFD Professional - live demo
Geometry preparation

SPACE CLAIM - Direct Modeling
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Extreme ease of use
Excellent for non CAD users
Ease of use to create model from scratch

DESIGN MODELER - Feature-Based Modeling
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Persistent: usage history captured
Associative: can utilize parameters and attributes
defined in the major CAD systems
Strong solid modeling capabilities
Geometry Interfaces @R17
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Geometry Interfaces @R17
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ANSYS CFD Products - Meshing Modules
ANSYS MESHING
GENERAL PURPOSE
TURBO
Workbench
Meshing
ICEM CFD
Fluent
Meshing
Auomatic
Persistent
Mutliphisic
Advanced
mesh editing
Fully hex
meshing
Advanced
mesh editing
Geometry
wrapping
ANSYS
TURBOGRID
Turbo mesh
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automatic
template based
Feedback From Customers Across Various Industries
Areas Of Improvements
• Workflow Pervasiveness
• Integrated Geometry Meshing Solutions
• Assembly, Part Management
• CAD and Mesh Manipulation Tools
• Solver Checks @ The Pre Processing Stage
ITS ALL ABOUT THE PROCESS/WORKFLOW
User Efforts
Key Steps
Job
submit,
monitor,..
ANSYS CFD Products – Pre, Solver, Post modules
ANSYS CFD
ANSYS CFD
Professional
ANSYS CFD-Flo
ANSYS CFX
ANSYS FLUENT
Basic fluid
flow and heat
transfer
Fluid flow,
heat transfer,
cavitation, …
Advanced fluid
flow and heat
transfer
Advanced fluid
flow and heat
transfer
Increasing simulation
capabilities
ANSYS CFD Professional
Basic tool for entry level users, accessed through
the powerful cfx engine
Temperature mixing
Analyses type allowed
• Steady analyses
• Uncompressible flows
• One-phase flows
• Convective heat transfer
• Conjugate heat Transfer
Suitable for
• Mono-phase valves, pipe connections and junctions
• Heat exchangers (no phase change)
• Mass flow split calculations
• Pressure drops calculations
• Temperature mixing
Account for
• HPC usage
• What if / optimization / Six Sigma analyses
Limitations
• Constant property materials
• K-ᖡ turbulence model only
Valve
ANSYS CFD Flo
Intermediate tool for beginners engineers as well as
expert users. It is a sub-group of ability inside ANSYS
CFX
• Steady/Unsteady analyses
• Compressible/Uncompressible flow
• One-phase flows
• Multi-phase allowed only for cavitation and free
surface flows
• Convective, conjugate and radiation (*) heat transfer
• Deforming mesh
• Turbulence models extension (SST, anisotropic RSM)
• FSI
Suitable for
• Cavitating valves, Heat exchangers
• Mass flow split and pressure drop calculations
• Vortex Shedding, Aeroacustic (*), …
Limitations
• Rotating machinery, full radiation models, full multiphase models, combustion
(*) limited set of features capabilities
Low Temperature Heat Exchanger
ANSYS CFX
Full featured CFD tool
• Lagrangian and Eulerian multiphase flows
• Convective, conjugate and radiation heat transfer
• Full turbulence models extension
• Combustion
• FSI
• Rotating Domain (turbomachinery)
• Aeroacustic capabilities (*)
• Extra embedded capabilities/modules (see next slides)
Suitable for
• Every scenario where cfd can help and can be applied to
Courtesy of Valeo Sylvania
(*) limited set of features capabilities
ANSYS CFX EXTRA CAPABILITIES
Turbo Pre-Processing
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Transient Blade Row
• Ability to use time domain
and/or frequency domain
transformation to model few
blade passages wit the same
accuracy of the full machine
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Blade Flutter
• Complemented blade flutter
analysis with ability to export
complex pressures from
transient flo simulation or load
application in ANSYS
Mechanical
Compressor’s blade flutter
ANSYS FLUENT
Full featured CFD tool
• Lagrangian and Eulerian multiphase flows
• Convective, conjugate and radiation heat transfer
• Full turbulence models extension
• Combustion
• FSI
• Full aeroacustic capabilities
• Extra embedded capabilities/modules (see next slides)
Suitable for
• Every scenario where cfd can help and can be applied to
Courtesy Dallara Automobili
ANSYS FLUENT EXTRA CAPABILITIES
Adjoint Solver
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An efficient means of exploring
a design space
Understanding the most
significant influences on a
system in single computation
A powerful gradient based
shape optimization tool
Computes input parameters
sensitivity to guide design
modification
Includes Bernstein polynomial
based mesh morphing
technology
Three Shape Parameters
1. Backlight angle (T1)
2. Tumble home angle (T2)
3. Windshield angle (T3)
ANSYS CFD EXTRA CAPABILITIES
6 Degrees Of Freedom
• Rigid Body solver
• Implicit coupling with stagger
iteration
• Support CCL
• Robust and easy-to-use motion
prediction
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Available with
• ANSYS CFD Flo
• ANSYS CFX
• ANSYS FLUENT
ANSYS CFD EXTRA CAPABILITIES - AEROACUSTIC
CFD Approaches to Aeroacoustics
Direct calculation – Computational
Aeroacoustics (CAA)

2.
Coupled CFD with specialized acoustics code,
Boundary Element Methods (BEM), Hybrid
zonal methods

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Acoustic wave are not tracked with CFD solution
Use special acoustics codes to calculate the
wave propagation
Acoustic Analogy modeling

4.
Resolve the acoustic pressure fluctuations as part
of the CFD solution
Use CFD to calculate source field
Use analytical solution to propagate sound from
source to receiver location
Decreasing computational effort
1.
Steady RANS based noise source modeling

Use empirical correlations to estimate acoustic
2. 3. 4.
radiation based on mean1.
flow solutions
ANSYS CFX
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Y
N
(*)
ANSYS FLUENT
Y
Y
Y
Y
(*)
fan noise macro & ccl
ANSYS CFD EXTRA CAPABILITIES – MULTIPHYSICS FSI
ANSYS strives to allow you to predict
accurately the performance of
products when this performance is
impacted by interactions between
different physics
Other CFD related Products
ANSYS
ICEPAK
ANSYS
BLADE MODELER
ANSYS
Vista TF
Fluent-based
tool for robust
and powerful
CFD analyses
for electronics
thermal
managment
Specialized
easy-to-use tool
for rapid 3D
design of
bladed rotating
and stationary
machinery
components
Rapid
preliminary
optimization of
turbomachinery
designs based
on 2D through
flow analysis
Other CFD related Products – Reaction Design
– CHEMKIN-PRO - chemical kinetics simulation
ͻ Si concentra sulla chimica del problema utilizzando sistemi ideali per descrivere i flussi di
reagenti e prodotti
– CHEMKIN-CFD - kinetics solver plug-in
ͻ Permette l’utilizzo della tecnologia CHEMKIN-PRO in campo CFD
– CHEMKIN-PRO REACTION WORKBENCH
ͻ Fornisce una piattaforma aggiuntiva per lo studio e l’analisi dei combustibili
– Compara, unisce ed estrae i meccanismi di reazione
– Determina la miglior composizione di miscele combustibili assegnando dei target di proprietà
– Add-on di CHEMKIN-PRO
– ENERGICO™ - fast continuous-flow emissions simulations
ͻ Automatizza la creazione di ERN (Equivalents Reactor Networks) e la mappatura dei
risultati sulla geometria di partenza
– FORTÉ™ - CFD for IC Engine Designers
ͻ Workflow specifico per simulazioni di motori a combustione
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Generazione automatica di mesh
Chimica dei fuel e di reazione accurata
Modelli di Spray e Spray-Wall
Rapidità di soluzione
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FENSAP-ICE
Flow
solution
Modular system leading to full In-Flight ice
accretion simulations
Eulerian droplet
impingement study
Ice accretion
simulation
Several fields of application, as:
icing studies and certification for aircrafts, helicopters,
jet engines and also for wind turbines
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