PDF4PRO ⚡AMP

Modern search engine that looking for books and documents around the web

Example: biology

Modeling Turbulent Flows Introductory FLUENT Training

2006 ANSYS, Inc. All rights , Inc. ProprietaryModeling Turbulent FlowsModeling Turbulent FlowsIntroductory FLUENT TrainingIntroductory FLUENT Training6-2 2006 ANSYS, Inc. All rights , Inc. ProprietaryFluent User Services December 2006 What is Turbulence? Unsteady, irregular (aperiodic) motion in which transported quantities (mass, momentum, scalar species) fluctuate in time and spacezIdentifiable swirling patterns characterize Turbulent mixing (matter, momentum, energy, etc.) results Fluid properties and velocity exhibit random variationszStatistical averaging results in accountable, turbulence related transport characteristic allows for turbulence Modeling . Contains a wide range of Turbulent eddy sizes (scales spectrum).zThe size/velocity of large eddies is on the order of mean flow. Large eddies derive energy from the mean flowzEnergy is transferred from larger eddies to smaller eddies In the smallest eddies, Turbulent energy is converted to internal energy by viscous 2006 ANSYS, Inc.

zModeling is still required for many terms in the transport equations. zRSM is more advantageous in complex 3D turbulent flows with large streamline curvature and swirl, but the model is more complex, computationally intensive, more difficult to converge than eddy viscosity models. ij ij k k i j j i ij i j x k u x u x u R uu δ − ρ δ ∂ ...

Loading..

Tags:

  Modeling

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Spam in document Broken preview Other abuse

Transcription of Modeling Turbulent Flows Introductory FLUENT Training

Related search queries