Applied Computational Fluid Dynamics - Intro

[Music] hello everyone I would like to welcome you all to this course which is titled applied computational fluid dynamics and as the name suggest uh this course is about applied aspects of the computional flu Dynamics many of you might be using uh computation Fu Dynamics or cfd insort for various applications in cfd wherever there's a fluid you can apply it you can use it as a design tool you can use it as a simulation tail you can use it as a uh tool to basically control your designs or control the outcomes that you want so cfd is there everywhere whether it's an automative application aerodynamic application biomedical application uh whether you want to research about clouds about environment about you want to make the weather predictions so whever there's a fluid you can basically apply cfd now regarding the applied aspects so if you are using cfd already uh this course will be useful to you because you will come to know why certain things work why certain things does not do not work right so it could be uh because of the bonding conditions because of the models that you're using there are many different kind of models in cfd okay you might have heard about the tance models but then you have L you have detach simulation and then finally you have simulations without model which is direct chical simulation the models have got their own limitations for certain flows they may work for certain flows they may not give you the results that you desire for example if the flow has got large separation if it has got suppression IND transition okay or if it has got realization some of the models will not give you the correct result similarly bonding conditions play a very important role uh in your comput F Dynamics if your governing question are correct your code is completely uh accurate and you have validated it but you do not have correct Bond conditions then you will not get correct values so this course as the content suggest it will teach you about all these practical aspects of using cfd as a design tool for your needs for your applications so I will briefly go through the course contents so first we'll review the the basic flu mechanics and thermodynamics so one important thing about this course is that it will primarily deal with the compressible computational flu Dynamics so flows which has got socks uh which has got the variations in Mark number where the compressibility effect is important so you will learn about how to deal with those things in this course we'll look at the different forms of the compressible equations we non-dimensionalize it and we'll discuss why the non-dimensionalization is important then we'll go through some model equations so whether it is adicction or convection or with diffusion with a combination of the two what are the elliptic equations hyperbolic equations parabolic equations how to identify them and how do we use different kind of numerical schemes to basically Target different kind of equations so we learn about those schemes we'll learn about the explicit schemes and implicit schemes we'll solve this model equations we'll also look at the properties of different schemes so how consistent uh the equation is how cons the scheme is can we expect stability from our simulation can we expect convergence from our simulation we'll go into the different kind of schemes which has got upend scheme soft capturing schemes compact scheme and so on and so forth we'll devote one week in bonding conditions discussing about different kind of bonding conditions that you see in your software or any tool that you're using at inlet at Outlet at farfield at wall bonding condition you have periodic bonding condition you have sleep bonding condition symetry bonding conditions all those things will be discussed in this course we'll briefly discuss about the finite volume method because many of you use commercial codes like fluent or open form which is based on finite volumes we'll touch on that then we'll show you some examples of how to solve the iser Ando equations discuss some case studies uh we'll spend some time on rans equations and tance model and finally we'll have some lectures on the Lees DNS and other HRI schemes so we hope that this course will be useful to you and you will come to know how to use your code if you already have a code how to use it effectively what to expect from your simulation and what not to expect from your simulation okay let's say that if you are not getting certain match from your Rance model you should know that this was expected so these kind of things will be uh known through this course so with that I will welcome once again all you all to this course thank you [Music] [Music] [Music]