Ansys Fluent R 17 - · PDF fileSingle-phase or VOF multiphase ... • Full Fluent Model Support • One tool ... • Wide Varieties of Erosion Models are available in ANSYS FLUENT

Ansys Fluent R 17.0

Michele Andreoli(m.andreoli@enginsoft.it)

Table of contentsUser InterfaceFluent MeshingSolver NumericsNew featuresInnovative Solutions

New User Interface: Ribbon-Driven Solver Workflow

Ribbon: Access primary workflow

Tree: Access model particulars and shortcuts

New User Interface: Ribbon-Driven Solver Workflow

New User Interface

Fluent Meshing

Movable Icon Sets

Highlight entities

Common Icons with solver

Operation Icons

Display/Selection controls

Native Polyhedral MeshingPolyhedral mesh requires initial tetmesh generation and then polyhedral mesh conversion in the Fluent solver. Can be complicated, time consuming and result in too many small mesh cells

Create native polyhedral mesh

Advantages:• 2-3 times less memory• 2-3 times faster

Solver AccuracyNew settings for a better convergence and robustness for typical industrial cases

EquationsConservative Coarsening (poly and highly stretched cells)Reordering of the AMG solver

Mesh QualityWarped-Face Gradient Correction

No reordering

RCM reordering

WFGC

New featuresOverset Mesh Method

Customers expect to be able to simulate complex geometries where components of the geometry are moving relative to one another.

Overset mesh problems can be set up and solved for:Steady and transient (fixed mesh), 3-D and 2-D planarPressure-based coupled solverIncompressible density methodSingle-phase or VOF multiphaseHeat transferk-epsilon and SST k- models

BETA in 17.0: Moving mesh, compressible flow, VOF with surface tension, pressure-far-field BC, Workbench support, pressure-based segregated algorithms.

Turbulence/AcousticsHybrid RANS-LES models

Shielded Detached Eddy Simulation (SDES)– New shielding function for DES models

– Much improved shielding under grid refinement – Shielding function which ‘dissolves’ under LES conditions – Improved definition of mesh length scale and calibration

– Stress Blended Eddy Simulation (SBES)– Based on SDES shielding function, switch from selected RANS model to selected LES model– Provide shielding function to clearly define/show regions of RANS and regions of LES

AcousticsAxial Fan

Fluent Addon Modules

Fluent Reacting Flow EnhancementsCHEMKIN-CFD Solver can now be used with no additional licenseFull compatibility with CHEMKIN mechanismsDynamic Cell Clustering with CHEMKIN-CFD offers significant speed-up for detailed chemistry

0 20 40 60 80 100 120

R17-DI

R17-DI-CA

Chemkin-CFD_DCC

ODE_solver Iterative_Solver

Fluent Offshore/Marine VOF

Segregated Velocity Inputs for primary and secondary phases and moving object for Open Channel BCMulti-directional numerical beachFenton Wave Theory for Open-Channel Flows

Improved accuracy for steep waves for which earlier implementations would predict premature breaking

Old New

• Streamlined workflow of entire simulation using Workbench

• Multi-Physics• Deterministic and Probabilistic

analysis• Can be coupled with RBF Morph

to include morphing

Design Exploration

From the comprehensive analysis to innovative solutions

Parameter Based

• Comprehensive design space• Detailed sensitivity analysis• Innovative solutions by gradient

based shape optimization• Can be coupled with RBF Morph

for advanced morphing• One tool – no additional license

Adjoint Solver

Parameter Free

Innovative Design

• Standalone Mesh Morpher based on Free Form Deformation Approach

• Coupled Mesh Morpher with Non-Gradient Based Optimization Methods

• Full Fluent Model Support• One tool – no additional license

Mesh Morpher Optimizer

Shape Optimization

Optimization without Morphing

Optimization with morphing

Goal:Decrease pressure loss in a pipe or manifold.

Challenges:Time.Limited Resources.Complex Environments.

Outcome:Improved overall performance.Life time improvement.Pressure loss decreased by 12%.

oooold.

How to increase life time of a manifold?

Design Space

Porous media

Adjoint Solver

ANSYS Solution for Erosion Modeling• Different particulate modeling options

DPM, DDPM, DEM, Eulerian-Granular

• Wide Varieties of Erosion Models are available in ANSYS FLUENTFLUENT’s Default Erosion ModelMclaury et. Al Erosion ModelSalama & Venkatesh Erosion ModelTulsa Erosion ModelDNV Erosion ModelErosion Model based on Wall Shear StressFlexibility to incorporate any erosion model

• Erosion pattern in complex flows and geometries can be predicted with a good accuracy

Contours of Erosion Rate

Thanks for you attention