Search Results

User Name Remember Me Password

Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: lukas.lebo

Forum: OpenFOAM Running, Solving & CFD April 16, 2017, 11:56

Replies: 9 Is it wrong to use LES models for low resolution simulations? Views: 1,505 Posted By lukas.lebo Yes the ratio is wrong since you don't know if... Yes the ratio is wrong since you don't know if you modeled the right amount of energy. But in my opinion it's a first estimate to evaluate the quality of your mesh. For a coarser mesh the ratio will...

Forum: OpenFOAM Running, Solving & CFD April 16, 2017, 09:30

Replies: 9 Is it wrong to use LES models for low resolution simulations? Views: 1,505 Posted By lukas.lebo Ok but how do you plot the spectrum? I can... Ok but how do you plot the spectrum? I can estimate the amount of resolved TKE by computing the resolved turbulent kinetic energy resTKEMean (1/2*trace(uPrime2Mean)) and then then estimate the...

Forum: OpenFOAM Running, Solving & CFD April 16, 2017, 04:21

Replies: 9 Is it wrong to use LES models for low resolution simulations? Views: 1,505 Posted By lukas.lebo Currently I'm using OneEqEddy, but I might try... Currently I'm using OneEqEddy, but I might try DynOneEgEddy. With my current mesh I can resolve >95% in the domain and go down to 10% near the wall. I will refine my mesh near the wall but maybe I'm...

Forum: OpenFOAM Running, Solving & CFD April 13, 2017, 17:03

Replies: 9 Is it wrong to use LES models for low resolution simulations? Views: 1,505 Posted By lukas.lebo I asked my supervising professor about this. He... I asked my supervising professor about this. He replied that in LES it is important to resolve the energy containing range of the spectrum. The cutoff should be in the inertial range. The 80% mark...

Forum: OpenFOAM Running, Solving & CFD April 10, 2017, 13:44

Replies: 9 Is it wrong to use LES models for low resolution simulations? Views: 1,505 Posted By lukas.lebo Is it wrong to use LES models for low resolution simulations? LES models are designed to resolve a part of the turbulent effects and model the remaining part. There is a the "best-practice saying" that you should resolve at least 80% of the turbulent kinetic...

Showing results 1 to 5 of 5

Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home General Forums     Main CFD Forum     System Analysis     Structural Mechanics     Electromagnetics     CFD Freelancers     Hardware     Lounge Software User Forums     ANSYS         CFX         FLUENT             Fluent Multiphase             Fluent UDF and Scheme Programming         ANSYS Meshing & Geometry     Autodesk Simulation CFD     AVL FIRE     COMSOL     CONVERGE     Fidelity CFD     FloEFD, FloWorks & FloTHERM     FLOW-3D     OpenFOAM         OpenFOAM News & Announcements             OpenFOAM Announcements from ESI-OpenCFD             OpenFOAM Announcements from OpenFOAM Foundation             OpenFOAM Announcements from Other Sources         OpenFOAM Installation         OpenFOAM Meshing & Mesh Conversion         OpenFOAM Pre-Processing         OpenFOAM Running, Solving & CFD         OpenFOAM Post-Processing         OpenFOAM Programming & Development         OpenFOAM Verification & Validation         OpenFOAM Community Contributions             OpenFOAM CC Toolkits for Fluid-Structure Interaction         OpenFOAM Journal         OpenFOAM Bugs     Phoenics     REEF3D         REEF3D News & Announcements     Siemens         STAR-CCM+         STAR-CD     SU2         SU2 News & Announcements         SU2 Installation         SU2 Shape Design Mesh Generation & Pre-Processing Software     ANSA     enGrid     GridPro     Pointwise & Gridgen Visualization & Post-Processing Software     EnSight     FieldView     ParaView     Tecplot Special Topics     Mesh Generation & Pre-Processing     Visualization & Post-Processing CFD Online Community     Site News & Announcements     Site Help, Feedback & Discussions     CFD-Wiki