PRACE Autumn School 2013 - Industry Oriented Simulations
Delayed Detached Eddy Simulation of Yacht Sails with Experimental Validation
CINECA, Dr. Raffaele Ponzini, CINECA, University of Ljubljana
September 2013
Slide contents
Outline of the presentation
SAILDES project -1
SAILDES project -2
Experimental setup
Numerical models
DDES model
Numerical setup
Numerical models
Numerical setup
Numerical models
Numerical setup
HPC environment
Scalability results
Cp comparisons with uncertainty evaluation
Q criterion comparisons: visualization -1
Top view/Slide view
Top spinnaker vortex details
Q criterion comparisons: visualization -2
DDES vs RANS
Implications
Future developments
Acknowledgements
Outline of the presentation
INTRODUCTION ON CFD IN HEMODYNAMICS
Contents
Computational fluid dynamics: CFD
Computer aided engineering workflow
From physics to model by means of measures
In vitro models
Animal models
In vivo image based measures
Computational model
CFD solver
The CFD approach
Domain-mesh--cell
Discretization
CFD concept-1
CFD concept-2
A tasking environment: geometry
A tasking environment: physics
A tasking environment: knowledge
A tasking environment: math/numeric and tech
How should I use my computational tools
Blood fluid dynamics: theory, equations and examples
Physic of blood
Blood density
Blood viscosity
Blood is Newtonian and non Newtonian
Reynolds number
Effect of Reynolds number -1
Effect of Reynolds number -2
Womersley number
Effect of Womersley number
Womersley VS Reynolds
Flow classifications
Steady laminar flow in a cylinder
Unsteady flow in a cylinder
Effect of Womersley number
Womersley solution
Incompressible vs. compressible flow
Single phase vs. multiphase flow & homogeneous vs. heterogeneous flow
Blood working hypothesis
Important features of blood as fluid
Unimportant features of blood as fluid