In the era full of low job availablity(especially for freshers in CFD),,, what makes you love CFD, or be in this subs... You can directly learn some other skills and have good initial salary.. Right???

I wanted to see the temperature contour of Heat exchanger but it's been more than 1 hour still it's loading any solution?

Hey everyone!

I'm a 31-year-old mechanical engineer with several years of experience in Oil & Gas (Project Engineer), Tool Installation (Team Lead), and currently BIM (Technical Expert / Mechanical Piping Modeler).

My dream has always been to work in automotive or aerospace engineering, especially in design and aerodynamics. However, career opportunities led me elsewhere, as these fields are almost nonexistent in my country due to the lack of R&D.

Now that I've graduated, I'm considering pursuing a Master's in Computational Mechanical Design in Europe to transition into CFD, aerodynamics, or mechanical design.

My question is: Is this a realistic career move at 31, with no professional experience in CFD or design? Would my previous engineering experience be valuable, or would I essentially be starting from scratch?

Thanks for your time!

I've been trying to use Ansys fluent (Student version) but everytime I start the program I get this warning saying that there's no license available. Workbench runs fine. I've also got similar problems when I open any of the other Ansys programs (as shown in the second image).

I've already checked that the program has access through the firewall to both private and public networks and I've tried uninstalling and installing again but the problem persists.

I also checked a similar post in this same subreddit and saw people mentioning the number of nodes or processes as a problem with the student license. Following the advice there, I tried running Fluent with 1, 2, 3 and 4 processes having the same issue each time.

I hope someone will be able to help me figure this out.

I have some conceptual doubts, which I didn't get clear explicit answer from sources in net,

1) What is difference between node values on/off in looking the contours? I observed values are relatively higher when I turned off node values. Please tell me cases or situations where we should turn on or turn off node values with reason. How does this affect in viewing contour, finding range of parameter in some selected surface or cell zones.

2) I have some trivial doubt about operating pressure. The point is- In momentum equation , it contains pressure gradient not absolute pressure, so fluent choose some reference pressure i.e operating pressure. So instead of solving with very large pressure, it works with smaller numbers since deltaP remains the same with the concept of operating pressure. Density is calculated using absolute pressure only.
This concept is same for both incompressible and compressible flow right, but why do they say for compressible flow you have to set operating pressure as zero, I didnt understand what is the reason for this? Can anyone explain elaborately please? Thanks in advance.

this 2d cfd sim uses upwind differencing schemes and uses ndarray and rayon to ensure its fast so im confused as to what to do with the tiny dt caused by cfl conditions and heres the tiny project
https://github.com/busysofa15/2026_projects/blob/534578f75d4ce511587d2f012a219a9b95a588e0/rust_projects/compressible_fluid_sim/src/main.rs
and the dt condition is around lines 86 to 99
any help would be appreciated 👍️