Please do a video on Meshing basics, where I can find the right study material for complete understanding of Meshing ... Like when I use inflation, how does it actually change the mesh?
Hey, thank you for the tips. You covered a lot in this short video. I liked it. I would prefer if you did not include music (too loud for me) and sound effects that obscure your voice.
Hello, I was meshing a 3D wing and while inflation was being created it says, "The inflation mesher cannot finish. Check that the inflation parameters are reasonable and that the height is not larger than the element size". If you have any answer for that plz
My cl and cd values resemble closely to literature values. However when i check my y+ value, it's more than a 100? is it still acceptable for the cl and cd? And sometimes when i do inflation for the y value using cfd calc, my geometry mesh elements break into pieces, why?
This again a nice video. I would like to ask a query about the suggested turbulence model Spalart-Almarah. It is proven to give good results over airfoils. Is it true only when fluid is air, or can we expect the same when the fluid is water? Please reply. Thanks
Thank you! When the fluid is water, it would mean that viscous effects and the resulting wall shear stresses are orders of magnitude higher. Hence, the boundary layer would be thinner as well. It would be recommended to use the k-omega turbulence model in that situation. The k-w turbulence model has the most accurate near-wall function models.
Hello Vid, I have a question regarding meshing really cambered airfoil such as a eppler 423 or selig1223 where the under camber is great. If you can help me with this it be amazing. Thanks
hi in the inlet boundary condition if i change the angle of attack by change the directional @t below for example X-direction 1 Y-direction 0 which is 0 angle of attack. right? X-direction 0.97814760073 Y-direction 0.20791169081775931 which is 12 degree angle of attack. right? if i change the AOA, do i have to change the axis for the life and drag?
Its a nice video. Sir,at the beginning of your video a figure of unstructured meshing of slotted airfoil at the leading edge has been displayed. Can you please help me to make structured meshing of slotted airfoil having a straight inclined cut off at the leading edge. Waiting for your reply.
Sir here I have attached the gyazo link of leading edge slot of airfoil gyazo.com/c0675c4987584718122204dfbddbe5f7 gyazo.com/cc5eda29f702fa358f5f22f7994cbd60
Thank you Sir for your reply. While doing mapped face meshing in AF zone the following error shows" All cell zones in Fluent may be automatically set to Fluid". What is the reason for not getting mapped mesh. Sir waiting for your reply.
![[CFD] How Fine should my CFD mesh be?](http://i.ytimg.com/vi/60fDz2cVdy8/mqdefault.jpg)
Please do a video on Meshing basics, where I can find the right study material for complete understanding of Meshing ... Like when I use inflation, how does it actually change the mesh?
Hey, thank you for the tips. You covered a lot in this short video. I liked it. I would prefer if you did not include music (too loud for me) and sound effects that obscure your voice.
thanks you very much !!!
Hello, I was meshing a 3D wing and while inflation was being created it says, "The inflation mesher cannot finish. Check that the inflation parameters are reasonable and that the height is not larger than the element size". If you have any answer for that plz
thank you sir
My cl and cd values resemble closely to literature values. However when i check my y+ value, it's more than a 100? is it still acceptable for the cl and cd? And sometimes when i do inflation for the y value using cfd calc, my geometry mesh elements break into pieces, why?
This again a nice video. I would like to ask a query about the suggested turbulence model Spalart-Almarah. It is proven to give good results over airfoils. Is it true only when fluid is air, or can we expect the same when the fluid is water? Please reply. Thanks
Thank you!
When the fluid is water, it would mean that viscous effects and the resulting wall shear stresses are orders of magnitude higher. Hence, the boundary layer would be thinner as well. It would be recommended to use the k-omega turbulence model in that situation. The k-w turbulence model has the most accurate near-wall function models.
My wall y+ value is in the range of 0.5 for Spalart Allmaras is it accurate?
Hi there, nice video sir. Do you know why sometimes i get negatice Cl values in my simulations? Can you indicate tutorials for meshing a selig s1223?
How to polyhedral mesh adaption in fluent for airfoil cfd
? Any tutorial ?
Hello sir, please make a video on 3D simulation of Vertical axis wind turbine please. I am new to ansys software and I need your help sir. Thank you
I don't do this anymore
@@VDEngineering this sad. May i ask why dont you do anymore
Sir, is the face splitting and mapped face meshing carries the same concept as block building in ICEMCFD.
please do a structured meshing of a 3D geometry
My computer does not have the resources for that, sorry!
Is someone chacing you? I had do set speed to 0.25, lol
Hello Vid, I have a question regarding meshing really cambered airfoil such as a eppler 423 or selig1223 where the under camber is great. If you can help me with this it be amazing. Thanks
hi
in the inlet boundary condition if i change the angle of attack by change the directional @t below
for example
X-direction 1
Y-direction 0
which is 0 angle of attack. right?
X-direction 0.97814760073
Y-direction 0.20791169081775931
which is 12 degree angle of attack. right?
if i change the AOA, do i have to change the axis for the life and drag?
similar problem, and i still struggle for solve
Yes , you need to change Cl&Cd component according to your AOA.
if i simulate 3D winglet, has it the same setup with your video?
Spalart allmaras weak for 3d flows.
@@konstantinosskourkeas9671 oh thx in advance. I set to transition SST
hi, does transient matter for simulation?
Its a nice video. Sir,at the beginning of your video a figure of unstructured meshing of slotted airfoil at the leading edge has been displayed. Can you please help me to make structured meshing of slotted airfoil having a straight inclined cut off at the leading edge. Waiting for your reply.
You need to show a picture, add a gyazo link or something.
Sir here I have attached the gyazo link of leading edge slot of airfoil
gyazo.com/c0675c4987584718122204dfbddbe5f7
gyazo.com/cc5eda29f702fa358f5f22f7994cbd60
gyazo.com/d6fca4eb92df2511aad41457bc4ad5dd
Make the lines A-F and then use Face Split
you can also try without line C and see what happens.
Thank you Sir for your reply. While doing mapped face meshing in AF zone the following error shows" All cell zones in Fluent may be automatically set to Fluid". What is the reason for not getting mapped mesh. Sir waiting for your reply.
It is not an error, just change your geometry to Fluid