Hydrodynamics and Aerodynamics

Technical discussion on fluid dynamics: theory and analysis.

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  1. Howlandwoodworks

    Bipedal land sailing robot! "Strandbeest"

    Howlandwoodworks, Apr 16, 2022
    Replies:
    2
    Views:
    2,671
    Doug Halsey
    Apr 18, 2022
  2. zstine

    Resistance: Surface Running vs Sumberged 'SWATH' and Wave Making Impacts

    zstine, Apr 14, 2022
    Replies:
    8
    Views:
    2,907
    zstine
    Apr 15, 2022
  3. Furkan

    Ship resistance

    Furkan, Jan 31, 2022
    Replies:
    7
    Views:
    2,580
    aldy syahri
    Apr 15, 2022
  4. jmf11

    Drivers for the "sqare top" width?

    jmf11, Dec 23, 2021 ... 2 3 4
    Replies:
    51
    Views:
    10,214
    Doug Halsey
    Apr 13, 2022
  5. Robbo62

    Paper on D.W. Taylor standard series

    Robbo62, Mar 24, 2022
    Replies:
    4
    Views:
    2,691
    Erwan
    Apr 5, 2022
  6. captncoop

    Force & WSA Drag Calculation

    captncoop, Mar 23, 2022
    Replies:
    5
    Views:
    2,349
    jehardiman
    Mar 24, 2022
  7. sun

    How to analyze the maximum and minimum wave force curve?

    sun, Mar 21, 2022
    Replies:
    0
    Views:
    1,682
    sun
    Mar 21, 2022
  8. Rabah

    Calculations of resistance of water and towrope power of a motor yacht of project B20-R

    Rabah, May 10, 2019
    Replies:
    12
    Views:
    8,813
    Rabah
    Mar 7, 2022
  9. Jhomer

    Rowing Boat Hull Designs

    Jhomer, Feb 8, 2022
    Replies:
    4
    Views:
    3,753
    waterbear
    Feb 25, 2022
  10. Mike Goebel

    Pocket Drive - modifications - photos

    Mike Goebel, Jan 27, 2022 ... 2 3
    Replies:
    39
    Views:
    6,522
    DogCavalry
    Feb 21, 2022
  11. Rabah

    Motion of ships in irregular wave

    Rabah, Feb 7, 2022
    Replies:
    9
    Views:
    3,052
    Rabah
    Feb 11, 2022
  12. LongCruise

    Active Drag Reduction?

    LongCruise, Mar 15, 2021 ... 2
    Replies:
    27
    Views:
    9,479
    BMcF
    Jan 28, 2022
  13. sun

    “Calculate the wind load in the direction of the incoming wind from 0° to 180° with an angle of 30°

    sun, Nov 3, 2021
    Replies:
    10
    Views:
    2,813
    powerabout
    Jan 26, 2022
  14. quequen

    Added Resistance in Waves

    quequen, Jan 30, 2014 ... 2
    Replies:
    29
    Views:
    11,560
    Pablo Sopelana
    Jan 14, 2022
  15. dustman

    How to calculate the velocity of waves?

    dustman, Jan 2, 2022
    Replies:
    5
    Views:
    2,339
    jehardiman
    Jan 4, 2022
  16. ras

    How to compare effect of hull form (only) on motion?

    ras, Dec 15, 2021
    Replies:
    9
    Views:
    2,822
    ras
    Dec 20, 2021
  17. krawiec

    modern hull shape

    krawiec, Nov 24, 2021
    Replies:
    3
    Views:
    2,563
    krawiec
    Nov 29, 2021
  18. dustman

    What hull will be most efficient between 8-12 kts?

    dustman, Oct 9, 2021 ... 5 6 7
    Replies:
    99
    Views:
    14,954
    S V
    Nov 4, 2021
  19. sharpii2

    Most Weatherly Schooner

    sharpii2, Aug 26, 2021 ... 2 3
    Replies:
    37
    Views:
    8,329
    Howlandwoodworks
    Sep 25, 2021
  20. Sailor Al

    Forces on sailboats (#3)

    Sailor Al, Jun 23, 2021 ... 2 3
    Replies:
    40
    Views:
    8,693
    rangebowdrie
    Sep 24, 2021
  21. sun

    What does the changing wave value in brackets mean?

    sun, Sep 18, 2021
    Replies:
    0
    Views:
    1,801
    sun
    Sep 18, 2021
  22. ClaudioD

    Heeling and Righting moments calculation

    ClaudioD, Sep 3, 2021 ... 2
    Replies:
    20
    Views:
    4,757
    TANSL
    Sep 7, 2021
  23. member74761

    Stringer Bedding, cushion or gap spacing

    member74761, Aug 16, 2021 ... 2
    Replies:
    26
    Views:
    6,626
    Scuff
    Sep 7, 2021
  24. jake wilson

    wetted surface area of appendages

    jake wilson, Aug 20, 2021
    Replies:
    5
    Views:
    3,287
    jake wilson
    Sep 1, 2021
  25. ziper1221

    Why are longer diving fins more efficient?

    ziper1221, Jun 24, 2021
    Replies:
    14
    Views:
    5,912
    gonzo
    Aug 30, 2021
  26. Andrew Kirk

    The effect of a flat transom.

    Andrew Kirk, Aug 27, 2021
    Replies:
    2
    Views:
    2,978
    gonzo
    Aug 27, 2021
  27. seth godin

    Tumblehome and buoyancy in a solo style canadian canoe

    seth godin, Aug 18, 2021 ... 2 3 4
    Replies:
    45
    Views:
    9,101
    fallguy
    Aug 26, 2021
  28. seth godin

    Solo canoe hydrodynamics-newbie catching up

    seth godin, Aug 17, 2021
    Replies:
    10
    Views:
    3,184
    seth godin
    Aug 18, 2021
  29. jmf11

    Crude simulation for free standing mast - sail - luff curve ?

    jmf11, Aug 6, 2021 ... 2 3
    Replies:
    31
    Views:
    6,833
    jmf11
    Aug 15, 2021
  30. Leo Ambtman

    Hull resistance

    Leo Ambtman, Aug 4, 2021 ... 2
    Replies:
    24
    Views:
    5,761
    TANSL
    Aug 9, 2021
  31. S V

    Tandem hydrofoil assisted catamaran upwash/downwash calculation?

    S V, Aug 5, 2021
    Replies:
    0
    Views:
    2,719
    S V
    Aug 5, 2021
  32. yootani

    Pontoon, one or two engines?

    yootani, Jul 24, 2021 ... 2
    Replies:
    22
    Views:
    4,030
    BlueBell
    Jul 28, 2021
  33. seandepagnier

    articulating rudder for sailboats

    seandepagnier, Jul 9, 2021 ... 2
    Replies:
    16
    Views:
    4,938
    Earl Boebert
    Jul 12, 2021
  34. Jeff in Boston

    Flat stern bottom extention on displacement power boat?

    Jeff in Boston, Jul 9, 2021
    Replies:
    4
    Views:
    2,209
    Jeff in Boston
    Jul 11, 2021
  35. DogCavalry

    Lift loss with increasing deadrise

    DogCavalry, Jul 8, 2021 ... 2
    Replies:
    20
    Views:
    4,433
    DogCavalry
    Jul 9, 2021
  36. DogCavalry

    Crouch Constant

    DogCavalry, Jul 6, 2021
    Replies:
    7
    Views:
    2,878
    BlueBell
    Jul 6, 2021
  37. Alexanov

    Hydrodynamic quality comparison.

    Alexanov, Jun 25, 2021
    Replies:
    8
    Views:
    2,705
    Erwan
    Jun 27, 2021
  38. Bukmaster9

    Tunnel in Hull

    Bukmaster9, Jun 18, 2021 ... 2 3
    Replies:
    32
    Views:
    6,408
    Bukmaster9
    Jun 23, 2021
  39. Mikko Brummer

    Foiling boats weight sensitivity?

    Mikko Brummer, Jun 15, 2021 ... 2 3
    Replies:
    34
    Views:
    7,127
    FoilAddict
    Jun 23, 2021
  40. fallguy

    Turbulence modeling

    fallguy, Jun 16, 2021
    Replies:
    4
    Views:
    1,788
    fallguy
    Jun 17, 2021
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