does the 20 80 principle works in CFD ?
Hi Mohamed thank you for the community you have created , I have some questions sure that some one with your expertise could answer I have a previous small experience in aerodynamics and CFD as I was involved in a formula student project actually I was a chief engineer for the project and the aerodynamic instructor I gained my knowledge generally from books like race car aero dynamics and race car vehicle dynamics , YouTube CFD videos , papers and linked in articles we were running simulations by Ansys using (k omega sst ) using the recommendations we found about the meshing quality and the simulation conditions etc. we understood the very basic fundamentals of theory of how CFD works 1- I am sure there is a lot of things iam missing out how it could affect my level of simulation ? 2-by reading car companies numbers you could see there is a significant error between simulations and reality maybe 10:20 % and i am sure they are making their best 3-what is the difference between k omega sst and higher models accuracy wise + is it deserves the higher coast of computational power ? 4- since I am not a CFD expert so I don't understand why you use coding if their are programs like Ansys that you just follow the steps ? 5- what is the extra mile or miles I should take ? 6- thank you again.