195 posts analyzed Updated Sep 2026
Averages 7 posts/day, top 25% activity. Most active Mondays around 12 PM UTC. Mostly text posts.
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 | 43 (22.1%) | 12 | 8 |
| ansys | 29 (14.9%) | 7 | 4 |
| fluent | 23 (11.8%) | 8 | 5 |
| help | 21 (10.8%) | 10 | 5 |
| mesh | 20 (10.3%) | 5 | 4 |
| simulation | 14 (7.2%) | 5 | 7 |
| navier | 11 (5.6%) | 146 | 19 |
| stokes | 10 (5.1%) | 161 | 21 |
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.
Navier-Stokes
I didnt know what to do so I made this
I tried numerically simulating a finite-scale version of the collapsing-core conditions from OpenAI’s Navier–Stokes paper
Well I don’t know what to say .
ANSYS Fluent Rocket Nozzle – Help Interpreting Underexpanded Flow and Shock Diamonds
Mass and momentum conservation equations explained in the simplest terms?
How do you think OpenAI's recent Navier–Stokes breakthrough could affect the future of CFD?
Attemp to Visually Explain OpenAI's Solution
Anyone interested in learning OpenFOAM CFD together?
Why did my 'optimized' NACA 4412 shrouded impeller perform worse than a cheap factory plastic fan at 15,000 RPM?
| Title | Upvotes | Comments | Type | Date |
|---|---|---|---|---|
| Navier-Stokes | 1.3K | 41 | image | Sep 8 |
| I didnt know what to do so I made this | 188 | 11 | image | Sep 8 |
| I tried numerically simulating a finite-scale version of the collapsing-core conditions from OpenAI’s Navier–Stokes paper | 165 | 55 | image | Sep 12 |
| Well I don’t know what to say . | 104 | 41 | image | Sep 9 |
| ANSYS Fluent Rocket Nozzle – Help Interpreting Underexpanded Flow and Shock Diamonds | 88 | 16 | image | Sep 21 |
| Mass and momentum conservation equations explained in the simplest terms? | 84 | 35 | image | Sep 21 |
| How do you think OpenAI's recent Navier–Stokes breakthrough could affect the future of CFD? | 72 | 27 | text | Sep 8 |
| Attemp to Visually Explain OpenAI's Solution | 72 | 7 | image | Sep 11 |
| Anyone interested in learning OpenFOAM CFD together? | 69 | 69 | text | Sep 23 |
| Why did my 'optimized' NACA 4412 shrouded impeller perform worse than a cheap factory plastic fan at 15,000 RPM? | 62 | 14 | image | Sep 11 |
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 Mondays around 12 PM 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 7 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 18 upvotes this month (net score per post).
What kind of posts does r/CFD get most?
On r/CFD, posts are a mix of formats, mostly text posts