Hydrodynamics and Aerodynamics

Technical discussion on fluid dynamics: theory and analysis.

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  1. Roflhat

    Aerodynamics - thundercat racing inflatable

    Roflhat, Oct 13, 2015 ... 4 5 6
    Replies:
    89
    Views:
    33,890
    Anders
    Jun 9, 2020
  2. fastwave

    Atmospheric surface layer profile

    fastwave, Jun 4, 2020 ... 2
    Replies:
    15
    Views:
    2,941
    fastwave
    Jun 9, 2020
  3. PieroF

    Flex in cross sectional area curves and shoulder waves

    PieroF, May 28, 2020
    Replies:
    1
    Views:
    1,510
    jehardiman
    May 29, 2020
  4. Ad Hoc

    R.I.P. Savitsky

    Ad Hoc, Apr 6, 2020
    Replies:
    9
    Views:
    3,706
    Ad Hoc
    May 12, 2020
  5. Alexanov

    Stream lines around the hull calculation algorithm.

    Alexanov, May 5, 2020
    Replies:
    12
    Views:
    2,340
    Alexanov
    May 11, 2020
  6. Bostjak

    Power cat unlikely performance?

    Bostjak, Mar 19, 2020 ... 2 3
    Replies:
    43
    Views:
    6,116
    Mcarthur
    May 5, 2020
  7. CocoonCruisers

    Gyrocopter rotor instead of canvas sail ?

    CocoonCruisers, Mar 22, 2019 ... 4 5 6
    Replies:
    75
    Views:
    15,918
    dinoa
    May 4, 2020
  8. Doug Lord

    Understanding Wing Technology

    Doug Lord, Sep 18, 2010 ... 20 21 22
    Replies:
    318
    Views:
    110,407
    brian eiland
    Apr 30, 2020
  9. revintage

    Coke-bottle fairing

    revintage, Nov 11, 2019 ... 2
    Replies:
    24
    Views:
    6,417
    Chase Kenyon
    Apr 28, 2020
  10. Matheus

    Heave Natural Frequency - AQWA

    Matheus, Apr 11, 2020
    Replies:
    2
    Views:
    1,708
    DogCavalry
    Apr 13, 2020
  11. Let_Freedom_Ring

    Offshore bracket pod rounded edges??

    Let_Freedom_Ring, Apr 11, 2020
    Replies:
    2
    Views:
    1,431
    Let_Freedom_Ring
    Apr 11, 2020
  12. alan craig

    Weymouth Speed Week (archive) late 1980's

    alan craig, Apr 8, 2020
    Replies:
    10
    Views:
    2,456
    BlueBell
    Apr 9, 2020
  13. rfleet1066

    Oar angle of attack

    rfleet1066, Jan 4, 2019 ... 2
    Replies:
    15
    Views:
    4,274
    Rumars
    Apr 9, 2020
  14. Erwan

    Downwash equation for Bell-Shaped spanload distribution

    Erwan, Feb 16, 2020 ... 2
    Replies:
    24
    Views:
    5,701
    philSweet
    Apr 1, 2020
  15. jbo_c

    Barge efficiency-displacement speed

    jbo_c, Mar 30, 2020 ... 2
    Replies:
    26
    Views:
    4,168
    Mr Efficiency
    Mar 31, 2020
  16. MrDillPickle

    Houseboat Design Characteristics

    MrDillPickle, Mar 4, 2020
    Replies:
    14
    Views:
    2,636
    fallguy
    Mar 22, 2020
  17. revintage

    Basic V-foil spreadsheet

    revintage, Feb 27, 2020
    Replies:
    3
    Views:
    3,328
    revintage
    Mar 13, 2020
  18. Grunf

    Wind gradient - twist on windsurfing sail

    Grunf, Mar 8, 2020
    Replies:
    12
    Views:
    4,236
    Erwan
    Mar 12, 2020
  19. Justaguy

    Leeboard Orientation

    Justaguy, Nov 27, 2015 ... 2
    Replies:
    20
    Views:
    16,420
    tspeer
    Mar 12, 2020
  20. Alexanov

    Any ideas how to improve resistance of such hull...

    Alexanov, Feb 7, 2020
    Replies:
    6
    Views:
    2,433
    Alexanov
    Mar 5, 2020
  21. Mohsen

    Bending Moment in ANSYS AQWA

    Mohsen, Jan 10, 2020
    Replies:
    6
    Views:
    3,236
    Mohsen
    Feb 26, 2020
  22. revintage

    Aspect ratio for surface piercing foil

    revintage, Feb 22, 2020
    Replies:
    11
    Views:
    3,122
    revintage
    Feb 23, 2020
  23. Ghost Boy

    Calculate the Lightship weight

    Ghost Boy, Feb 20, 2020
    Replies:
    6
    Views:
    3,682
    gonzo
    Feb 21, 2020
  24. klims106

    Med vs South Florida boat Performance

    klims106, Feb 17, 2020
    Replies:
    14
    Views:
    2,051
    messabout
    Feb 20, 2020
  25. gonzo

    Demistifying Froude number

    gonzo, Feb 2, 2020 ... 2
    Replies:
    23
    Views:
    6,936
    Mikko Brummer
    Feb 10, 2020
  26. wesley Sherman

    Dynamics of a cylinder water tank in a Sailboat

    wesley Sherman, Feb 7, 2020
    Replies:
    10
    Views:
    1,974
    fallguy
    Feb 8, 2020
  27. Niclas Vestman

    Possible to extend LWL by protruding/trailing foil?

    Niclas Vestman, Jan 29, 2020 ... 2
    Replies:
    25
    Views:
    3,869
    Niclas Vestman
    Feb 5, 2020
  28. Iridian

    I believe we may be approaching foiling all wrong...

    Iridian, Jan 25, 2020
    Replies:
    11
    Views:
    2,998
    tspeer
    Feb 4, 2020
  29. waterbear

    Added drag of external chine logs

    waterbear, Dec 14, 2019
    Replies:
    3
    Views:
    2,335
    messabout
    Feb 2, 2020
  30. Federico Ferretti

    Sailboat directional stability: center of gravity (CG) related to center of lateral resistance (CLR)

    Federico Ferretti, Dec 27, 2019
    Replies:
    3
    Views:
    2,907
    Earl Boebert
    Jan 27, 2020
  31. Howlandwoodworks

    Wind Tunnel testing for hull and rudder

    Howlandwoodworks, Jan 11, 2020
    Replies:
    9
    Views:
    3,072
    Yellowjacket
    Jan 12, 2020
  32. Asleep Helmsman

    Depth Sounder on a Stick

    Asleep Helmsman, Dec 19, 2019
    Replies:
    8
    Views:
    1,741
    Asleep Helmsman
    Jan 7, 2020
  33. Kit_L

    Can a sharpie-inspired trawler's lively movement be tamed?

    Kit_L, Dec 25, 2019 ... 2 3
    Replies:
    34
    Views:
    4,943
    Kit_L
    Jan 5, 2020
  34. Aralc

    Scow boats / Hydrodinamics

    Aralc, Dec 22, 2019 ... 2
    Replies:
    17
    Views:
    5,414
    gonzo
    Dec 29, 2019
  35. schakel

    Soft wing sails in America's cup 2021

    schakel, Dec 17, 2019
    Replies:
    4
    Views:
    3,502
    schakel
    Dec 21, 2019
  36. Yull

    Lift coefficients of the sail

    Yull, Dec 5, 2019
    Replies:
    10
    Views:
    6,226
    schakel
    Dec 12, 2019
  37. Mr Efficiency

    Resistance factors, planing hull at low speed

    Mr Efficiency, Dec 6, 2010 ... 17 18 19
    Replies:
    281
    Views:
    72,743
    pilkinsur0
    Dec 5, 2019
  38. KeithO

    Prop/rudder optimization for longe range single engine displacement vessel 30k lb displacement

    KeithO, Sep 13, 2019
    Replies:
    6
    Views:
    2,370
    KeithO
    Nov 19, 2019
  39. xanthar

    Are Series 60 Hulls more efficient than Taylor Standard Series Hulls?

    xanthar, Nov 3, 2019
    Replies:
    1
    Views:
    1,952
    jehardiman
    Nov 16, 2019
  40. jmf11

    Tools advised for Windfoil basic understanding ?

    jmf11, Oct 28, 2019
    Replies:
    3
    Views:
    2,340
    tspeer
    Nov 14, 2019
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