Hydrodynamics and Aerodynamics

Technical discussion on fluid dynamics: theory and analysis.

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  1. Slingshot

    Foil section? For foil board

    Slingshot, Dec 24, 2019 ... 2
    Replies:
    25
    Views:
    11,279
    Erwan
    Dec 8, 2024 at 12:21 PM
  2. motorbike

    Keel Section

    motorbike, Feb 21, 2015 ... 2 3
    Replies:
    40
    Views:
    12,961
    Alan Cattelliot
    Nov 27, 2024
  3. aiprt

    Forces on mast foot

    aiprt, Nov 11, 2024
    Replies:
    10
    Views:
    596
    aiprt
    Nov 13, 2024
  4. kenfyoozed

    Tritoon center log not parallel

    kenfyoozed, Nov 9, 2024
    Replies:
    14
    Views:
    481
    kenfyoozed
    Nov 10, 2024
  5. naserrishehri

    Emergency Sailing With 1 Side Engine

    naserrishehri, Oct 29, 2024 ... 2
    Replies:
    15
    Views:
    893
    BlueBell
    Nov 3, 2024
  6. Vincent DePillis

    Could adding a Yankee power up my F31 upwind?

    Vincent DePillis, Oct 8, 2024
    Replies:
    7
    Views:
    965
    Paul Scott
    Oct 14, 2024
  7. Aaarrrggghhh

    Americas Cup Foils

    Aaarrrggghhh, Oct 1, 2024
    Replies:
    2
    Views:
    1,090
    Aaarrrggghhh
    Oct 6, 2024
  8. Paul Scott

    Kline Fogelman airfoils for sailboats?

    Paul Scott, Oct 3, 2024
    Replies:
    2
    Views:
    898
    Paul Scott
    Oct 4, 2024
  9. Heimfried

    To install kind of leeboards at a solar electric katamaran

    Heimfried, Sep 16, 2024 ... 2
    Replies:
    15
    Views:
    1,554
    jmwoodring
    Sep 30, 2024
  10. Collin

    Distribution of rocker.

    Collin, Nov 3, 2011 ... 2 3 4
    Replies:
    53
    Views:
    18,374
    hosscara
    Sep 28, 2024
  11. jmf11

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

    jmf11, Aug 26, 2024
    Replies:
    11
    Views:
    1,483
    CT249
    Sep 16, 2024
  12. Michael Lambert

    Questions about surface tension

    Michael Lambert, Aug 4, 2024 ... 2
    Replies:
    21
    Views:
    2,037
    Will Gilmore
    Sep 15, 2024
  13. Senrab

    Building a scaled down International 505 dinghy

    Senrab, Aug 2, 2013
    Replies:
    13
    Views:
    6,121
    Lupa
    Sep 10, 2024
  14. jmwoodring

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

    jmwoodring, Aug 25, 2024
    Replies:
    9
    Views:
    1,720
    kapnD
    Aug 29, 2024
  15. CarlosK2

    The Contact Patch

    CarlosK2, Aug 13, 2024
    Replies:
    10
    Views:
    1,519
    CarlosK2
    Aug 23, 2024
  16. Sailor Al

    Was Marchaj having us on?

    Sailor Al, Apr 12, 2021 ... 15 16 17
    Replies:
    246
    Views:
    28,670
    Sailor Al
    Aug 14, 2024
  17. hashtag_laeuft

    Daggerboard position: Maneuverability VS. Acceleration

    hashtag_laeuft, Mar 22, 2024 ... 2 3
    Replies:
    35
    Views:
    5,663
    CT249
    Aug 1, 2024
  18. Sailor Al

    Swept Volume Theory

    Sailor Al, Aug 2, 2022 ... 22 23 24
    Replies:
    349
    Views:
    38,050
    CarlosK2
    Jul 28, 2024
  19. CarlosK2

    Fossati, Politecnico di Milano Wind Tunnel

    CarlosK2, Jul 20, 2024
    Replies:
    14
    Views:
    1,412
    CarlosK2
    Jul 20, 2024
  20. Sailor Al

    Fossati's Aero-Hydrodyamics

    Sailor Al, Jun 27, 2024 ... 4 5 6
    Replies:
    86
    Views:
    5,827
    Sailor Al
    Jul 19, 2024
  21. pitbull

    motoring sideways to boost upwind VMG

    pitbull, Jul 16, 2024
    Replies:
    2
    Views:
    1,379
    Will Gilmore
    Jul 16, 2024
  22. K33von

    Extending 18 ft boat at the transom

    K33von, Jul 3, 2024
    Replies:
    8
    Views:
    1,667
    Barry
    Jul 11, 2024
  23. andrew spiteri

    Air Lubrication Drag Reduction for Smaller Vessels

    andrew spiteri, Jan 10, 2024 ... 3 4 5
    Replies:
    68
    Views:
    9,551
    jakeeeef
    Jul 7, 2024
  24. Arton

    Does anyone Know about Slamming load

    Arton, Jul 5, 2024
    Replies:
    7
    Views:
    1,560
    Arton
    Jul 6, 2024
  25. Dieter51

    Naca Airfoils shape and rocker oft flat bottomed boats

    Dieter51, Jun 9, 2024 ... 3 4 5
    Replies:
    73
    Views:
    4,796
    Dieter51
    Jul 6, 2024
  26. mitch184

    Breakaway angle/rise off transom

    mitch184, Jun 12, 2024
    Replies:
    2
    Views:
    1,659
    mitch184
    Jul 2, 2024
  27. Erwan

    Sail's 2D Section Drag & Surface Roughness

    Erwan, Jun 2, 2024
    Replies:
    2
    Views:
    1,584
    Erwan
    Jul 2, 2024
  28. Heimfried

    What foil to reduce drag at circular motor shaft?

    Heimfried, Jun 5, 2024
    Replies:
    14
    Views:
    2,089
    philSweet
    Jun 21, 2024
  29. Habar Khan

    How to calculate pitch angle and roll angle

    Habar Khan, Jun 21, 2024
    Replies:
    0
    Views:
    1,419
    Habar Khan
    Jun 21, 2024
  30. mc_rash

    Small displacement craft resistance

    mc_rash, Jun 11, 2024
    Replies:
    7
    Views:
    1,788
    messabout
    Jun 15, 2024
  31. Forecaddie

    Overlapping schooner sail plan

    Forecaddie, Feb 3, 2024
    Replies:
    9
    Views:
    3,151
    C. Dog
    Jun 5, 2024
  32. Maarten88

    High Camber hydrofoil section for wingfoiler

    Maarten88, Jan 21, 2024
    Replies:
    9
    Views:
    3,702
    Maarten88
    May 22, 2024
  33. dustman

    Foil balance point changes with aspect ratio?

    dustman, May 5, 2024
    Replies:
    13
    Views:
    2,309
    dustman
    May 12, 2024
  34. 67-LS1

    Weight vs horsepower

    67-LS1, May 11, 2024
    Replies:
    11
    Views:
    2,195
    67-LS1
    May 12, 2024
  35. Simme_swede

    Finding optimal propeller dimension based on ships speed and hull resistance

    Simme_swede, Apr 2, 2024 ... 2
    Replies:
    16
    Views:
    3,171
    Simme_swede
    Apr 28, 2024
  36. Hamza Asif

    Illegal connectivity error in Ansys AQWA

    Hamza Asif, Apr 11, 2024
    Replies:
    3
    Views:
    2,124
    Ad Hoc
    Apr 14, 2024
  37. Matti Nakkalajarvi

    Jet impeller speed vs water flow

    Matti Nakkalajarvi, Apr 12, 2024
    Replies:
    3
    Views:
    2,315
    Matti Nakkalajarvi
    Apr 13, 2024
  38. slopecarver

    Moving extending hull LWL (Catamaran)

    slopecarver, Apr 5, 2024
    Replies:
    4
    Views:
    2,001
    Paul Scott
    Apr 6, 2024
  39. Umar Farooq

    Frequency Statistical Analysis (AQWA) - Motion Analysis

    Umar Farooq, Mar 28, 2024
    Replies:
    6
    Views:
    2,148
    Umar Farooq
    Apr 3, 2024
  40. Paul Scott

    Patin Catalan piece in current Seahorse Magazine

    Paul Scott, Mar 29, 2024
    Replies:
    4
    Views:
    1,959
    cluttonfred
    Mar 30, 2024
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