194 posts analyzed Updated Jul 2026
Averages 6 posts/day, top 25% activity. Most active Tuesdays around 8 AM UTC. Mostly text posts (64%).
r/CFD Traffic & Engagement r/CFD Traffic & Engagement
Volume and engagement over time Posting volume and engagement over time
Post Format
Upvote Distribution
How upvoted posts perform Only posts with 2+ upvotes. The bands below show how those posts are spread by upvote count.
r/CFD Most Active Times When r/CFD Is Most Active
Peak posting by day and hour (UTC) When this community posts most, by day and hour (UTC)
Most Active by Day
r/CFD Flair Performance r/CFD Flair Performance
Upvotes and volume by flair Average upvotes and post volume by flair
This subreddit doesn't use post flairs.
No flaired posts were found in this month's data.
Post Type Breakdown
Share by text, image, or link Share of posts by format: text, image, or link
r/CFD Trending Keywords Trending Keywords in r/CFD
Ranked by how often they appear Title keywords ranked by how often they appear
| Keyword | Mentions ▼ | Upvotes | Comments |
|---|---|---|---|
| cfd | 51 (26.3%) | 19 | 10 |
| help | 22 (11.3%) | 6 | 7 |
| simulation | 18 (9.3%) | 23 | 6 |
| ansys | 16 (8.3%) | 8 | 6 |
| need | 12 (6.2%) | 5 | 6 |
| fluent | 12 (6.2%) | 9 | 6 |
| fluid | 11 (5.7%) | 2 | 4 |
| solver | 10 (5.2%) | 16 | 12 |
r/CFD Mentioned Domains Mentioned Domains in r/CFD
Most linked sites Most linked sites in this subreddit
This community doesn't link off-site.
Its posts are text, images, or discussion rather than outbound links.
r/CFD Top Posts Top Performing Posts in r/CFD
Highest-performing posts Highest-performing posts. Each title links to Reddit.
CFD simulation of airflow over an F-16 at high angle of attack
Update: I interviewed the Audi F1 CFD engineer (ex Aston Martin). What he answered, and what's saved for round 2
Index/tensor notation for turbulence and CFD (Lecture 4 of my free course)
Interviewing a CFD engineer who runs sims for an F1 team tomorrow (now Audi, ex-Aston Martin). What would you ask?
LES of an airfoil
Simulation of my vibroboat experiment
LES of flow past a backstep - Rust solver
ANSYS Fluent 2024 R1 – Combustion is not sustaining despite high ignition temperature (DRM19 CHEMKIN)
Fully 3D-Printable Sub-250g Flying-Wing Drone
I made this meme but it makes me thinking. Why do we struggle with problems so much with some form of diffusion being the best help? I would like to know if there are any solutions to these problems that don't rely an adding diffusion. Energy/entropy conservation for example. Anything else?
r/CFD Audience Overlap r/CFD Subreddit Overlap & Related Communities
Overlapping audiences Communities with overlapping audiences
r/CFD FAQ Frequently Asked Questions About r/CFD
What's the best time to post on r/CFD?
Based on posting volume, r/CFD is most active on Tuesdays around 8 AM UTC. That window has the most community activity, but busier hours also mean more competition for attention.
How active is r/CFD?
r/CFD averages 6 posts per day and ranks in the top 25% for activity among tracked SFW subreddits.
How many upvotes do posts on r/CFD get?
Posts on r/CFD average about 10 upvotes this month (net score per post).
What kind of posts does r/CFD get most?
On r/CFD, most posts are text posts (64%)