Hydrodynamics and Aerodynamics

Technical discussion on fluid dynamics: theory and analysis.

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  1. javed

    Savitsky method result understanding confusion

    javed, Jun 17, 2025
    Replies:
    4
    Views:
    460
    Zachary Peter
    Jun 28, 2025 at 5:05 PM
  2. Best Designer Ever

    Chine Location

    Best Designer Ever, Jun 12, 2025 ... 2
    Replies:
    16
    Views:
    721
    TANSL
    Jun 16, 2025
  3. CarlosK2

    Prof. Lex Keuning in Memoriam

    CarlosK2, Jun 2, 2025
    Replies:
    1
    Views:
    519
    CarlosK2
    Jun 2, 2025
  4. aL27jrcf

    [newbie]a rudder of a sailboat having entrance-exit holes?

    aL27jrcf, May 27, 2025
    Replies:
    9
    Views:
    746
    montero
    Jun 1, 2025
  5. Anoop_ODL

    AQWA Fender Question

    Anoop_ODL, May 13, 2025
    Replies:
    3
    Views:
    881
    MaisieKeller
    May 20, 2025
  6. Greg Oosterbaan

    Reducing detachment drag

    Greg Oosterbaan, May 12, 2025
    Replies:
    7
    Views:
    866
    gonzo
    May 13, 2025
  7. 67-LS1

    Planing speed and pad bottoms

    67-LS1, Apr 19, 2025
    Replies:
    5
    Views:
    1,329
    braoun
    Jun 10, 2025
  8. seasquirt

    Sailing in the shade

    seasquirt, Feb 15, 2025
    Replies:
    5
    Views:
    1,732
    seasquirt
    Feb 18, 2025
  9. montero

    Aerodynamic table

    montero, Feb 4, 2025 ... 2
    Replies:
    19
    Views:
    3,455
    montero
    Feb 13, 2025
  10. Joonatan

    aft height effect on hull resistance on a vessel

    Joonatan, Feb 4, 2025
    Replies:
    3
    Views:
    1,586
    jehardiman
    May 2, 2025
  11. Alexanov

    Catamaran resistance

    Alexanov, Jan 13, 2025 ... 2
    Replies:
    18
    Views:
    3,930
    FESB
    Feb 20, 2025
  12. mc_rash

    heave oscillation floating body

    mc_rash, Jan 12, 2025
    Replies:
    5
    Views:
    1,776
    mc_rash
    May 14, 2025
  13. Boston Hatteras

    Interceptor type hull trim devices

    Boston Hatteras, Jan 2, 2025
    Replies:
    6
    Views:
    2,269
    BMcF
    Jan 17, 2025
  14. Thinkoutbox

    Direct Upwind Sailing

    Thinkoutbox, Dec 25, 2024 ... 3 4 5
    Replies:
    73
    Views:
    6,013
    montero
    Jan 4, 2025
  15. ijonjio

    Calculating Boat's Diesel Consumption

    ijonjio, Dec 18, 2024
    Replies:
    4
    Views:
    1,800
    gonzo
    Dec 19, 2024
  16. JC Campbell

    Water ballast

    JC Campbell, Dec 14, 2024 ... 2 3 4
    Replies:
    59
    Views:
    5,075
    Dave G 9N
    Feb 10, 2025
  17. aiprt

    Forces on mast foot

    aiprt, Nov 11, 2024 ... 2
    Replies:
    21
    Views:
    4,158
    CT249
    Jan 31, 2025
  18. kenfyoozed

    Tritoon center log not parallel

    kenfyoozed, Nov 9, 2024
    Replies:
    14
    Views:
    2,437
    kenfyoozed
    Nov 10, 2024
  19. naserrishehri

    Emergency Sailing With 1 Side Engine

    naserrishehri, Oct 29, 2024 ... 2
    Replies:
    15
    Views:
    3,078
    BlueBell
    Nov 3, 2024
  20. Vincent DePillis

    Could adding a Yankee power up my F31 upwind?

    Vincent DePillis, Oct 8, 2024
    Replies:
    7
    Views:
    2,596
    Paul Scott
    Oct 14, 2024
  21. Paul Scott

    Kline Fogelman airfoils for sailboats?

    Paul Scott, Oct 3, 2024
    Replies:
    2
    Views:
    2,718
    Paul Scott
    Oct 4, 2024
  22. Aaarrrggghhh

    Americas Cup Foils

    Aaarrrggghhh, Oct 1, 2024
    Replies:
    2
    Views:
    2,972
    Aaarrrggghhh
    Oct 6, 2024
  23. Heimfried

    To install kind of leeboards at a solar electric katamaran

    Heimfried, Sep 16, 2024 ... 2
    Replies:
    15
    Views:
    3,794
    jmwoodring
    Sep 30, 2024
  24. jmf11

    Which method/tool to compare two very different wingfoil boards?

    jmf11, Aug 26, 2024
    Replies:
    11
    Views:
    3,219
    CT249
    Sep 16, 2024
  25. jmwoodring

    What are these and what effect might they have on hydrodynamics?

    jmwoodring, Aug 25, 2024
    Replies:
    9
    Views:
    3,340
    kapnD
    Aug 29, 2024
  26. CarlosK2

    The Contact Patch

    CarlosK2, Aug 13, 2024 ... 2
    Replies:
    20
    Views:
    4,044
    gonzo
    Jan 6, 2025
  27. Michael Lambert

    Questions about surface tension

    Michael Lambert, Aug 4, 2024 ... 2
    Replies:
    21
    Views:
    4,233
    Will Gilmore
    Sep 15, 2024
  28. CarlosK2

    Fossati, Politecnico di Milano Wind Tunnel

    CarlosK2, Jul 20, 2024
    Replies:
    14
    Views:
    2,865
    CarlosK2
    Jul 20, 2024
  29. pitbull

    motoring sideways to boost upwind VMG

    pitbull, Jul 16, 2024
    Replies:
    2
    Views:
    2,900
    Will Gilmore
    Jul 16, 2024
  30. Arton

    Does anyone Know about Slamming load

    Arton, Jul 5, 2024
    Replies:
    7
    Views:
    2,995
    Arton
    Jul 6, 2024
  31. K33von

    Extending 18 ft boat at the transom

    K33von, Jul 3, 2024
    Replies:
    8
    Views:
    3,221
    Barry
    Jul 11, 2024
  32. Sailor Al

    Fossati's Aero-Hydrodyamics

    Sailor Al, Jun 27, 2024 ... 4 5 6
    Replies:
    86
    Views:
    9,946
    Sailor Al
    Jul 19, 2024
  33. Habar Khan

    How to calculate pitch angle and roll angle

    Habar Khan, Jun 21, 2024
    Replies:
    0
    Views:
    2,341
    Habar Khan
    Jun 21, 2024
  34. mitch184

    Breakaway angle/rise off transom

    mitch184, Jun 12, 2024
    Replies:
    2
    Views:
    2,808
    mitch184
    Jul 2, 2024
  35. mc_rash

    Small displacement craft resistance

    mc_rash, Jun 11, 2024
    Replies:
    7
    Views:
    2,458
    messabout
    Jun 15, 2024
  36. Dieter51

    Naca Airfoils shape and rocker oft flat bottomed boats

    Dieter51, Jun 9, 2024 ... 3 4 5
    Replies:
    73
    Views:
    8,223
    Dieter51
    Jul 6, 2024
  37. Heimfried

    What foil to reduce drag at circular motor shaft?

    Heimfried, Jun 5, 2024
    Replies:
    14
    Views:
    3,299
    philSweet
    Jun 21, 2024
  38. Erwan

    Sail's 2D Section Drag & Surface Roughness

    Erwan, Jun 2, 2024
    Replies:
    2
    Views:
    2,526
    Erwan
    Jul 2, 2024
  39. 67-LS1

    Weight vs horsepower

    67-LS1, May 11, 2024
    Replies:
    11
    Views:
    3,025
    67-LS1
    May 12, 2024
  40. dustman

    Foil balance point changes with aspect ratio?

    dustman, May 5, 2024
    Replies:
    13
    Views:
    2,983
    dustman
    May 12, 2024
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