How to think about r/cfd
The community focuses on computational fluid dynamics (CFD), providing a platform for enthusiasts and professionals to discuss topics related to fluid mechanics, numerical simulations, and software tools like OpenFOAM and ANSYS. Members share insights on meshing techniques, viscosity, and various simulation parameters, fostering a collaborative environment for problem-solving and knowledge sharing. Its long-standing presence and specialized focus make it a unique resource for those in engineering and scientific fields.
Confidence 4/5
Audience
Participants typically include engineering students, professionals in aerospace and mechanical engineering, and hobbyists interested in fluid dynamics. The demographic skews towards individuals with a technical background, often seeking practical advice or theoretical discussions. The vibe is generally supportive and educational, with members eager to help each other understand complex concepts and improve their skills.
Posting culture
Content that thrives includes detailed questions about specific CFD problems, tutorials, and discussions of software techniques. Members appreciate thorough explanations and practical examples, while low-effort posts or blatant self-promotion tend to be downvoted. The community values quality over quantity, and active engagement can lead to a steady flow of responses, making timely posting beneficial for those seeking quick assistance.
Brand engagement notes
Brands should approach this community with caution, as members are often skeptical of overt promotion. Authentic engagement through sharing valuable insights, educational content, or tools that genuinely assist members can foster goodwill. Participating in discussions, answering questions, and providing free resources or tutorials can be effective strategies. However, brands should avoid direct advertising or sales pitches, as these are likely to be met with resistance from the community.
Top keywords
What r/cfd talks about
Weighted by how often each term appears in posts and comments, relative to baseline frequency. The largest words are the strongest signals of community focus.
External signals
Where the community looks
Top external domains linked from posts and comments — a quick read on the sources of truth this audience trusts.
Top contributors
Who shapes the conversation
The most active and most-upvoted posters and commenters in this community. Useful when planning outreach or studying a community's tastemakers.
Top posters
By post count
- u/[deleted]
- u/mouhsinetravel
- u/narziviaI
- u/pete_1523
- u/wigglytails
- u/aflofo
- u/Jagants
- u/cons013
- u/rephical
- u/BigDaddyknuckles
- u/EternalSeekerX
- u/f1_aerodynamicist
- u/wouterremmerie
- u/LycheeKitchen8955
- u/svantevid99
- u/ProjectPhysX
- u/tbcam26
- u/gg_boi14
- u/MajesticRate1818
- u/COMgun
- u/Snoo-76353
- u/1O53r
- u/yycTechGuy
- u/costelloart
- u/Darth_drizzt_42
- u/jaime_47_
- u/Venkatesh_jha
- u/Red_S2k
- u/WolfsbaneAlpha
- u/wanderer_petz
- u/Ill-Secretary-4873
- u/JakeFromKorea
- u/bitdotben
- u/Snail_With_a_Shotgun
- u/Idhanirem
- u/MeursaIt
- u/maxle0312
- u/Maestro2000
- u/Raro-Bizarro
- u/21Rep
- u/NioniN99
- u/Holiday-Surround-144
- u/trexzxd
- u/ghostfacemirage
- u/sblbista
- u/mit_iceman
- u/No_Bluebird2656
- u/braintruffle
- u/dukemuken
- u/Overunderrated
- u/sophomoric--
- u/math_guy667
- u/Ccruz1000
- u/bacalhau_veloz
- u/Sd3fe
- u/REDR4NGER
- u/BrownLightning7
- u/cilo479
- u/Lower-Resolution4917
- u/Active_String2216
- u/Ifkaluva
- u/mariosweg1
- u/KPrice01
- u/tigerbond009
- u/thefmark07
- u/Sr_Leckie
- u/darbl
- u/FluidicWiz
- u/Theta-Chad_99
- u/Blackwater09
- u/YOURUNCLEGEORGE69
- u/hemanth_963
- u/Pablo24fit
- u/ProMonkey03
- u/Medical_Post_3105
- u/1337K1ng
- u/Iron-G
- u/ImaginaryBuy155
- u/Brown-Bot
- u/konkelchan
- u/Dynostasis
- u/Elegant-Emergency191
- u/FC-ST
- u/wimpy-sloth
- u/bremzo7
- u/Silly_Objective_5186
- u/fivesevven
- u/Intrepid_Word2876
- u/betelgeuse3150
- u/thealmosthere
- u/harrymaguireee
- u/Due_Education4092
- u/loco_mad_85
- u/grosi2247
- u/cfd_noob
- u/East-Analyst6739
- u/Rhyktangle
- u/Last-Pollution92
- u/tobi_209
- u/Harry_Haller97
By votes
- u/ProjectPhysX
- u/konkelchan
- u/braintruffle
- u/aflofo
- u/wigglytails
- u/pixelSmuggler
- u/So_Many_Hot_Camels
- u/JakeFromKorea
- u/[deleted]
- u/BlueCheetah66
- u/tbcam26
- u/slimjim8201
- u/EternalSeekerX
- u/SuperStrifeM
- u/ImAnEngnineere
- u/04BluSTi
- u/hpmbeschadigun
- u/f1_aerodynamicist
- u/dukemuken
- u/rut_to_life
- u/FC-ST
- u/GasyDoer-261
- u/picigin
- u/bitdotben
- u/prograMagar
- u/mouhsinetravel
- u/WeiWeiU17
- u/wouterremmerie
- u/Dynostasis
- u/Elegant-Emergency191
- u/Jagants
- u/sophomoric--
- u/math_guy667
- u/Bean_from_accounts
- u/Overunderrated
- u/1O53r
- u/s_laine
- u/kaegi
- u/ArtchR
- u/theremin_mind
- u/wimpy-sloth
- u/csznyu1562
- u/rephical
- u/yycTechGuy
- u/costelloart
- u/Snail_With_a_Shotgun
- u/cons013
- u/bubabasohfe
- u/Silly_Objective_5186
- u/gg_boi14
- u/Darth_drizzt_42
- u/neozhaoliang
- u/uScream_
- u/REDR4NGER
- u/MajesticRate1818
- u/COMgun
- u/orxshi
- u/mihman
- u/pete_1523
- u/CS-fan-101
- u/mirmiryo
- u/Ccruz1000
- u/MeursaIt
- u/jaime_47_
- u/integrate-space_xyz
- u/Idhanirem
- u/cilo479
- u/Maestro2000
- u/gooDoog_Hat
- u/bacalhau_veloz
- u/utkarsh49
- u/dimem16
- u/fivesevven
- u/maxle0312
- u/Due_Education4092
- u/BierMeistro
- u/hrishavxd
- u/thealmosthere
- u/Active_String2216
- u/Laminar_vs_Turbulent
- u/bremzo7
- u/harrymaguireee
- u/NioniN99
- u/SlapGas
- u/BrownLightning7
- u/loco_mad_85
- u/Red_S2k
- u/wiggitt
- u/betelgeuse3150
- u/ReasonableRow
- u/Venkatesh_jha
- u/BigDaddyknuckles
- u/svantevid99
- u/nkeitia
- u/ishandabri
- u/grosi2247
- u/tigerbond009
- u/ab1mbo1a
- u/kakkapriyesh
- u/PuRi5t
Top commenters
By comment count
- u/[deleted]
- u/Overunderrated
- u/CFDMoFo
- u/cons013
- u/picigin
- u/wigglytails
- u/ProfHansGruber
- u/braintruffle
- u/aero-dragonwing
- u/Evil_Toilet_Demon
- u/ProjectPhysX
- u/zelphAware
- u/alltheasimov
- u/integrate-space_xyz
- u/arth_sojitra_1999
- u/T3rribl3Gam3D3v
- u/Gr8B4nt3r
- u/fiziksever
- u/Iron-G
- u/BWStearns
- u/arkie87
- u/APerson2021
- u/Feisty_Philosophy234
- u/Elkesito36482
- u/anikinfartsnacks
- u/Arkytez
- u/PresTruman
- u/Humbledshibe
- u/bitdotben
- u/KyllingDurum
- u/aflofo
- u/Michael_Aut
- u/Individual_Break6067
- u/Certain_Bit117
- u/cvnh
- u/HarshrajJadeja
- u/OTK22
- u/FC-ST
- u/No-Photograph3463
- u/pedrofarinha
- u/VVG57
- u/omaregb
- u/NoiseWarrior
- u/storm_the_castle
- u/Sykez95
- u/pixelSmuggler
- u/Material-Spray-8477
- u/MhdSal19
- u/no7fish
- u/CombatTwerk
- u/prograMagar
- u/aerosayan
- u/Litlebuda
- u/WantSumDuk
- u/ILikeTrains44
- u/getargs
- u/aeroengollie
- u/Davey-Gravy
- u/blue_dot_soup
- u/mattheModestly
- u/heitorvitorc
- u/cbrian13
- u/wintermute93
- u/LifeOnNightmareMode
- u/d_shado
- u/Outrageous_Dig4185
- u/pfftyeah
- u/breathe_iron
- u/Elementary_drWattson
- u/Toginator
- u/sniperlucian
- u/Maere05
- u/crazy_celt
- u/OlympusMonds
- u/IComeAnon19
- u/ald_loop
- u/milesnpoints
- u/machinegunkisses
- u/hallez
- u/Fair-Ad3639
- u/shoshkebab
- u/Griffin_Mackenzie
- u/Chronozoa2
- u/ChockP51
- u/kicktothescrote
- u/drooobie
- u/NoSpotofGround
- u/adimrf
- u/Upbeat-Fix-7426
- u/ComplexAd6707
- u/11kata
- u/Socile
- u/SharpShockDimonds
- u/iReallyReadiT
- u/HPADude
- u/GeeFLEXX
- u/twolf59
- u/rafalsz
- u/xanderxq06
- u/vortexnix
By votes
- u/Overunderrated
- u/ishanYo
- u/arkie87
- u/braintruffle
- u/wintermute93
- u/CFDMoFo
- u/picigin
- u/pedrofarinha
- u/NoiseWarrior
- u/pcassidyhammer
- u/pixelSmuggler
- u/11kata
- u/cbrian13
- u/Hochkomma
- u/[deleted]
- u/wigglytails
- u/sworist
- u/cons013
- u/SharpShockDimonds
- u/TinusPiloot
- u/OTK22
- u/AmbrusBoth
- u/bitdotben
- u/LifeOnNightmareMode
- u/ProjectPhysX
- u/RiemannSmith
- u/alperozt
- u/unnecessaryellipses1
- u/platynarmunk
- u/_padla_
- u/prograMagar
- u/Evil_Toilet_Demon
- u/zelphAware
- u/ProfHansGruber
- u/supernumeral
- u/_35k
- u/SpicyFLOPs
- u/bikooo3878
- u/simha1352
- u/ChockP51
- u/Humbledshibe
- u/Other_Evidence8818
- u/1O53r
- u/Gr8B4nt3r
- u/aerosayan
- u/Michael_Aut
- u/EternalSeekerX
- u/sniperlucian
- u/HorgeMcMelon
- u/zarazek01
- u/antariksh_vaigyanik
- u/d_shado
- u/PresTruman
- u/Jon3141592653589
- u/VVG57
- u/aflofo
- u/_therealgungan_
- u/integrate-space_xyz
- u/arth_sojitra_1999
- u/No-Photograph3463
- u/Davey-Gravy
- u/blue_dot_soup
- u/aero-dragonwing
- u/ald_loop
- u/alltheasimov
- u/OkConcentrateNow
- u/waspbr
- u/WantSumDuk
- u/Outrageous_Dig4185
- u/crazy_celt
- u/kicktothescrote
- u/NoSpotofGround
- u/Certain_Bit117
- u/cvnh
- u/hokagesahab
- u/SorryOutOfPho
- u/kepler456
- u/FC-ST
- u/FlyingRug
- u/manolokbzabolo
- u/turbulent_dan
- u/Litlebuda
- u/pfftyeah
- u/Maere05
- u/Feisty_Philosophy234
- u/KyllingDurum
- u/blaztoff
- u/ncc81701
- u/circa86
- u/TK-1138
- u/cosmic_conspiracy
- u/abdelrahman_sult
- u/5uspect
- u/ILikeTrains44
- u/APerson2021
- u/Elkesito36482
- u/Chronozoa2
- u/drooobie
- u/HPADude
- u/xanderxq06
Similar communities
Where this audience also spends time
Topic-adjacent communities surfaced from Reddit's own related subreddit signal.
FAQ
r/cfd — frequently asked questions
Quick facts about this subreddit's size, history, focus, and related communities.
How many subscribers does r/cfd have?
r/cfd has approximately 41,735 subscribers as of May 27, 2026.
When was r/cfd created?
r/cfd was created on August 30, 2009 (17 years ago).
What is r/cfd about?
The community focuses on computational fluid dynamics (CFD), providing a platform for enthusiasts and professionals to discuss topics related to fluid mechanics, numerical simulations, and software tools like OpenFOAM and ANSYS. Members share insights on meshing techniques, viscosity, and various simulation parameters, fostering a collaborative environment for problem-solvin…
What subreddits are similar to r/cfd?
Communities similar to r/cfd include r/fluidmechanics, r/aerodynamics, r/openfoam, r/fea, r/aerospaceengineering.
Who are the most active posters on r/cfd?
The most frequent posters on r/cfd include u/[deleted], u/mouhsinetravel, u/narziviaI.
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