GUTS OF CFD: Transport Equations

[@CEverett55]

Thanks for 'pulling over' at 5:30 to explain the relevance of the discussion. Good job!

[@markoj3512]

Could you please explain what is the difference between the second term and third term of your transport equation at 2:47? For me these terms are the same and called laplacian terms and they are only in a different mathematical way written down. also a coefficient is missing in front of the laplacian term.

[@tienphunguyen6498]

Thank you. This video helps me alot. Keep up the good work

[@markoj3512]

1st) On 4:06 the convective form is wrong! the correct convective term ist u*grad(phi) or in conservation form grad ( u*phi). 2nd) ou can't mix the convective term with laplacian term and call ist convective term. this presentation contain so many wrong formulas. your fedintion of a cross derivative is the same a the laplacian. laplacian(phi) = grad (div(phi)) please consult a competent person before uploading false equations!

[@Pulpasification]

Thanks a lot for your comments, I was going through this video and thinking: "ok, am I missing something or I've never seen such a framework". Hope people will read your comments before to go through the video.

[@turinturambar7185]

I think you mistyped the laplacien. To the best of my knowledge the divergence of a gradient of a scalar should be equal to laplaceian--> laplacian= div(grad(phi))=laplacien(phi) , NOT grad (div(phi))=laplacian(phi) . Here is the link for the second derivative identities, you can check the DCG chart. en.wikipedia.org/wiki/Del#Second_derivatives

[@erockromulan9329]

Let's see... there's Fee, there's Fi and I also think there's Fo and Fum.