r/CFD↗
Computational Fluid Dynamics
48k subscribers196 posts / mo in Sep 2026158 authors / mosince 2009
r/CFD has 48k members (+28% over the last 12 months). It gets about 196 posts a month from 158 people. Top topics: Surface Finishing and Edges, Space & Physics Engineering and Voxel Games & Engines.
When to post on r/CFD
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How r/CFD has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/CFD
Top topics
Share of the subreddit's posts
- Surface Finishing and Edges0.7%
- Space & Physics Engineering0.3%
- Voxel Games & Engines0.3%
- Intake Mods & Modifications0.2%
- Academia vs Industry0.2%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Ansys Inc
- NASA
- ResearchGate
- ScienceDirect
- Doi
Everything else about r/CFD
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research