At 2:00, where you compare general transport equation with convection-diffusion equation, you are assuming rho to be 1. But, doesn't that make the previous tutorial incompressible ?? But, we simulated shock-wave travel in that case. Do these two cases make sense with one another ??
Hallo Mr. Nagy. Thanks for that great explanation. Which disseration do you mean? I cant find any disseration by henrik yushin that you mentioned in your video for detail according the discretization. Thanks
At 10min, you say 50% are asleep, but after reading the wolfdynamics 120 pages of slides, 40 paages of gavin tabor slides and 3h of fvm videos from wolfdynamics I think this 10min of video at 1.25x speed doesn't seem too bad XD
Dear Professor Nagy, I was trying to reproduce those cases, however the oscillations that I am getting for the cubic and the linear cases are only visible when I set the limits on Paraview from -0.001 to 0.001. I checked and it seems that the models are the same. Do you know if there was any difference on the version of OpenFOAM? I am using version v1812 through Docker.
![[CFD] The SIMPLE Algorithm (to solve incompressible Navier-Stokes)](/img/n.gif)
I really like the theory part as well. It helps to understand what is going on. Thank you
I am glad you like it. In my opinion it is very important.
At 2:00, where you compare general transport equation with convection-diffusion equation, you are assuming rho to be 1. But, doesn't that make the previous tutorial incompressible ?? But, we simulated shock-wave travel in that case. Do these two cases make sense with one another ??
You solve two different sets of equations. Here a simple scalar transport, for the shock wave the compressible Navier-Stokes equations.
@@OpenFOAMJozsefNagy can't the scalarTransportFoam be classified as compressible or incompressible??
@@sandipgewali641 The simple scalar transport equation (which is implemented in OF) doesn't know anything about the density.
Hallo Mr. Nagy. Thanks for that great explanation. Which disseration do you mean? I cant find any disseration by henrik yushin that you mentioned in your video for detail according the discretization. Thanks
Henrik Rusche
Thanks for your tutorials! Still actual, with minor modifications in 2020.
At 10min, you say 50% are asleep, but after reading the wolfdynamics 120 pages of slides, 40 paages of gavin tabor slides and 3h of fvm videos from wolfdynamics I think this 10min of video at 1.25x speed doesn't seem too bad XD
Thank you Sir, very good explanation.
Thank you Sir!
Divergent scheme is only for Non orthogonal neighbour cells?
Will the neighbour take the cosine of normal vector of previous cell & proceed further ?
div schemes are for all cells. They represent an important part of transport.
Great work yet again!
I really like the theory part but i couldnt understand the linear upwind scheme how intermediate phase can have 2 values? based on previous slope?
you take the cell value and the gradient in that cell. depending on the flow you take the cell or the neighbor.
Dear Professor Nagy,
I was trying to reproduce those cases, however the oscillations that I am getting for the cubic and the linear cases are only visible when I set the limits on Paraview from -0.001 to 0.001. I checked and it seems that the models are the same. Do you know if there was any difference on the version of OpenFOAM? I am using version v1812 through Docker.
Newer versions are a bit more stable. This is OK.
@@OpenFOAMJozsefNagy Thank you very much! All the best!
@@Murilo08LOL Thank you!
Amazing! Very good!
Well done!
Thank you :)