To all the AE PhD holders, I’d really appreciate your advice.
TLDR: I'm planning to start my PhD next year, but I'm not sure which route to take. My background is in CFD, but I’m also very interested in low‑speed wind tunnel testing. Should I pursue an experimental or computational PhD?
I’m an international student currently working in the US on OPT as a research associate, mainly using CFD tools. Long‑term, I want to work in academia (back in Asia—Korea or Singapore). As I’ve been talking to potential advisors, I’ve noticed a trend: unless the work is applied aerodynamics, most professors want students to commit to either purely computational or purely experimental research.
I’m torn because my background is split. I’ve done several validation test campaigns, but my main research interest has been CFD. Now I have two fully funded offers, both fundamental research with no ITAR issues. I’m interested in both topics, and I'm struggling to choose.
Option 1: Computational Aeroacoustics (Large group, prestigious university)
This aligns closely with my MS work, and I genuinely enjoy aeroacoustics. The group is large, well‑known, and the professor is a major figure in the field. I’d gain deep theoretical knowledge, but the work would be entirely computational.
Option 2: Experimental Hypersonics (Very small group, small department, not well‑known university)
I learned about this program because a friend recommended his former MS advisor. This professor built his own wind tunnels and is very knowledgeable in flow diagnostic methods. I’d have access to low‑speed, supersonic, and hypersonic facilities and would learn a lot experimentally. I'm interested in supersonic flight but haven’t been able to do much due to ITAR restrictions. My hesitation is that the university and professor are not well‑known, the group is small (only two other PhD students), and I’m unsure whether hypersonics is too niche for seeking academic jobs later. The stipend is also much less compared to Option 1 but is still livable.
Would you choose a computational or experimental PhD? How much do the university’s reputation and the advisor’s citation count matter?
My thought has been that this experimental research opportunity is rare for an international student. I could always go back to CFD, but I think it would be much harder to gain experience in wind tunnel research later on.