CDES is specialized in providing high quality CFD Analysis with accurate results and that too always delivered on time.
Turbulencia CFDDescripción completa
FLOW THROUGH PIPE FOR CFDDescripción completa
Full description
CFDDeskripsi lengkap
Pyrolysis
ABAQUS ADVANCED CFD
purge rates husa
Termosifones CFDDescripción completa
informe cfd utfsm
Full description
laporan cfd
Deskripsi lengkap
-
CFD APPLIED TO TURBOMACHINERY
Martin Kessler, PhD 07/04/2011
Examples Exam ples - Turbom Turbomachine achinery ry
PAGE 2
Examples Exam ples - Turbom Turbomachine achinery ry
PAGE 2
Exampl Exa mples es - Hy Hydro dro
Power and Efficiency Cavitation Flow pattern
PAGE 3
Examples - Wind
Power and Efficiency Flow pattern
PAGE 4
Topology
PAGE 5
• All turbomachines are topologically identical – Just variations on a theme – Lends perfectly to design systems and parametric models
• Machines differ by changing – Hub/shroud shape – Blade leading and trailing edge shape and location – Blade wrap or angle – Number of blades – Rate of rotation
Shroud
Blade
Hub
What is CFD (Computational Fluid Dynamics)?
•
PAGE 6
CFD requires a computational model build as a representation of physical problem Cleaning
•
Usually begins from a CAD import operation
•
Mesh generation for fluid region (domain for CFD analysis).
HVAC ducts - geometry Mesh
•
Solve mathematical equations
•
Post-processing of results
Results
CFD Methodology
PAGE 7
Solver is usually based on finite volume method
Domain is dicretized into control volumes
Momentum, mass and energy balance equations are discretized into algebraic equations
dV V d A d A S dV t V A A V transitório
convecção
difusão
geração
All equations are solved in order to have the flow solution
Control volume
Fluid flow region discretized into finite volumes (computational mesh)
BladeGen: Template Approach • Initial Blade Setup – Can define wrap angle, thickness, and number of blades – Properties will be constant from hub to shroud
User will need to modify properties on spanwise layers
PAGE 13
BladeGen: Template Approach
PAGE 14
• Initial Blade Setup – Alternatively, blade can be defined by defining pressure and suction sides
BladeGen: Design Environment
Meridional View
Auxilliary View
Angle View
Thickness View
PAGE 15
BladeModeler - DesignModeler
•
DesignModeler –
–
Automatic Fluid Zone Creation Create assemblies including “nonturbo” components
PAGE 16
Single Component: Extent
Inlet / outlet too close
PAGE 17
Inlet / outlet
½ blade chord away
Mesh Types - Meshing • Tet Mesh and Tet/Prism hybrid
