ANSYS FLUENT CFD: Supersonic Flow, Oblique Shocks, and Expansion Waves Tutorial

Dear Engineers,
In most supersonic flows, shock waves occur as the fluid goes past the object. There are two types of phenomena, an oblique shock (when the flow hits a convex corner) and an expansion wave (when the flow goes through a concave corner). This has a resulting effect on the velocity, pressure, and temperature of the fluid and can lead to increased drag if the aircraft is not designed (i.e. streamlined) properly.
Here is a detailed tutorial explaining how to perform a compressible flow CFD (computational fluid dynamic) simulation on a rocket fin, generating oblique shocks and expansion waves. To facilitate this, you will need to use the 'Face Split' feature in the Geometry section to break up your domain into a number of sections.
For more CFD tutorials, engineering tips and tricks, and other fun stuff.. visit my channel VDEngineering.
Best Wishes,
VDEngineering
My Instagram: / vinayak_desh
My Website: www.vinayakd.com/

[@xTelicMusic]

Hi VDEngineering. Good video! Keep it up!

[@moritzjackson6991]

Great man! Thanks

[@shubhamkolhe2414]

Please make detailed video on how to choose correct model in Ansys.
Please

[@VDEngineering]

I don't do this anymore

[@tempestandacomputer6951]

@@VDEngineering do it

[@RaviTeja-fx7ob]

please make a video by defining back pressure

[@bimafatahrinandi3343]

thank you so much for the video! I am mechanical engineering student. I am running some simulations and I have some problems with highlighting/selecting the drag coefficient area in a aerospike scenario.

[@supunsamarasinghe1490]

Why do you set operating pressure = 0?

[@phdmeme]

Thank you a lot!

[@larsjansen4245]

Do you have an idea why I'm getting a bow shock where the flow remains supersonic after the shock? It should theoretically be a oblique shock since the deflection angle is only 10 deg at mach 2.7.

[@manojkumar-in5jt]

sir, can you please make tutorial on hypersonic flow over a blunt body?

[@prateekpatankar]

Dear VDEngineering,
My sincere thanks for this tutorial. I have been trying to run a similar simulation and your method yielded amazing results. The approach I took as a novice of CFD has been quite crude and rudimentary in comparison. It has yielded very inconsistent results. While I understand what you have done differently from a simple procedural point of view, I do not quite grasp where I have gone wrong conceptually and theoretically in my approach. That is to say, I do not understand what physical differences there are between your approach and mine. I would very much like to consult with you on this further in order to understand where I was going wrong and how does following the steps in your video rectify it.
Would it be possible for us to correspond further regarding this ? Please do let me know. I would be very grateful for your guidance. I will provide an email address if you wish. Thank you.

[@VDEngineering]

Hi Prateek,
Sure, you can provide me your email,
Basically, the mesh is the single most crucial part of this simulation as the flow is supersonic. In addition, you might be making errors in your boundary conditions which is creating problems for your simulation.

[@hariharan4934]

Thanks for this video VD Engineering !
I've a problem in plotting chart for a 2D Airfoil flow. When I plot a chart for X vs Cp (pressure), the plots in the chart is always ending in 0.3 (in X-direction). I've no idea why it happens, and I've tried for different airfoils too. But still I'm facing the same problem, the pressure plots always ends in 0.3 (X- direction).
Can you please help me to solve this problem?

[@charithgowda4674]

how to calculate gauge pressure in the pressure far field dialog box?

[@amritshende559]

sir!...i am working on double wedge geometry at mach 5......as you suggested i have applied the BC but unable to get heat flux distribution over a surface of double wedge as per experimental data....what i have to do now?

[@RaviTeja-lj9yy]

What if there is outlet condition

[@vijrumbanayempally6926]

That is very nice. Can you help me in creating SCRAMJET model and meching plz

[@VDEngineering]

Thank you
Regarding your SCRAMJET model, you're better off posting your model on your channel rather than inboxing me, and then I (and others) will be able to look at it that way.
The meshing technique would be identical to what is shown here, (assuming you have straight edges and not a curved nozzle).

[@rishabagrawal2010]

VDEngineering sir i need help in ansys
I want to analysis the total deformation and equvalent stress in the spungouts when the rocket moter fires

[@yusufmulla6259]

my pc has 2 cores as well, is there any other limiting pc spec to consider when running Parallel?

[@VDEngineering]

GPU speed

[@praveenyavarna2213]

🙄 not possible@@VDEngineering