Hydrodynamics and Aerodynamics

Technical discussion on fluid dynamics: theory and analysis.

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  1. FredrikA

    Hydrodynamic form

    FredrikA, Mar 24, 2014 ... 2
    Replies:
    26
    Views:
    7,638
    FredrikA
    Mar 29, 2014
  2. Erwan

    Reverse-Engineering of Modern Cat hull shape

    Erwan, Jul 30, 2012 ... 2
    Replies:
    26
    Views:
    7,294
    Erwan
    Aug 11, 2012
  3. dustman

    Wing sail questions

    dustman, Jan 3, 2023 ... 2
    Replies:
    25
    Views:
    3,953
    dustman
    May 1, 2023
  4. MicMac

    Maximum Efficiency of a turbine on a moving vessel

    MicMac, Nov 16, 2022 ... 2
    Replies:
    25
    Views:
    2,470
    seandepagnier
    Dec 17, 2022
  5. Kim Klaka

    curious rudder balance problem

    Kim Klaka, Feb 20, 2017 ... 2
    Replies:
    25
    Views:
    6,316
    PeteK
    Oct 7, 2020
  6. Niclas Vestman

    Possible to extend LWL by protruding/trailing foil?

    Niclas Vestman, Jan 29, 2020 ... 2
    Replies:
    25
    Views:
    3,807
    Niclas Vestman
    Feb 5, 2020
  7. mustafaumu sarac

    Sail cloth idea

    mustafaumu sarac, Mar 12, 2019 ... 2
    Replies:
    25
    Views:
    3,375
    mustafaumu sarac
    Mar 21, 2019
  8. Anthony Appleyard

    Wakes

    Anthony Appleyard, Apr 24, 2014 ... 2
    Replies:
    25
    Views:
    9,154
    Anthony Appleyard
    Sep 16, 2017
  9. Janne Enlund

    Enhance directional stability

    Janne Enlund, May 4, 2015 ... 2
    Replies:
    25
    Views:
    4,656
    Janne Enlund
    May 8, 2015
  10. sailorjim

    Off my rocker?

    sailorjim, Mar 23, 2013 ... 2
    Replies:
    25
    Views:
    4,926
    sailorjim
    Apr 8, 2013
  11. Autodafe

    Real benefits of hull/bridgedeck streamlining?

    Autodafe, Aug 10, 2011 ... 2
    Replies:
    25
    Views:
    8,122
    ImaginaryNumber
    Mar 12, 2012
  12. jsanchez0510

    Software for flow analysis of moving boat

    jsanchez0510, Nov 30, 2011 ... 2
    Replies:
    25
    Views:
    10,229
    Leo Lazauskas
    Dec 7, 2011
  13. Leo Ambtman

    Hull resistance

    Leo Ambtman, Aug 4, 2021 ... 2
    Replies:
    24
    Views:
    4,306
    TANSL
    Aug 9, 2021
  14. Peaky

    Drag Angles vs VPP

    Peaky, May 21, 2020 ... 2
    Replies:
    24
    Views:
    3,824
    MikeDrummond
    Jun 11, 2020
  15. revintage

    Coke-bottle fairing

    revintage, Nov 11, 2019 ... 2
    Replies:
    24
    Views:
    6,338
    Chase Kenyon
    Apr 28, 2020
  16. Erwan

    Downwash equation for Bell-Shaped spanload distribution

    Erwan, Feb 16, 2020 ... 2
    Replies:
    24
    Views:
    5,628
    philSweet
    Apr 1, 2020
  17. jlconger

    sail equivalent to winglets?

    jlconger, Aug 5, 2014 ... 2
    Replies:
    24
    Views:
    8,990
    johnhazel
    Sep 28, 2014
  18. Todd Miller

    How small can a towing tank be?

    Todd Miller, Mar 17, 2014 ... 2
    Replies:
    24
    Views:
    9,487
    froudedude
    Mar 31, 2014
  19. Doug Lord

    Foil-Spring Controlled Flapped Foil

    Doug Lord, Oct 15, 2013 ... 2
    Replies:
    24
    Views:
    5,014
    myszek
    Oct 23, 2013
  20. Mikko Brummer

    The ultimate validation?

    Mikko Brummer, Sep 25, 2012 ... 2
    Replies:
    24
    Views:
    5,805
    andybrnr
    Dec 6, 2012
  21. WilliamP

    Bow Wave and Kelvin Wake

    WilliamP, Oct 21, 2012 ... 2
    Replies:
    24
    Views:
    14,258
    daiquiri
    Oct 22, 2012
  22. LIG

    Air lubrication on displacement catamaran

    LIG, Oct 31, 2011 ... 2
    Replies:
    24
    Views:
    10,965
    WestVanHan
    Nov 6, 2011
  23. bitfield

    VPP with measured Drag

    bitfield, Jul 10, 2022 ... 2
    Replies:
    23
    Views:
    2,998
    Sailor Al
    Aug 14, 2022
  24. gonzo

    Demistifying Froude number

    gonzo, Feb 2, 2020 ... 2
    Replies:
    23
    Views:
    6,827
    Mikko Brummer
    Feb 10, 2020
  25. Windvang

    Delft Systematic Deadrise Series

    Windvang, Oct 6, 2017 ... 2
    Replies:
    23
    Views:
    6,801
    schakel
    Sep 13, 2018
  26. W9GFO

    Advantages of hard chined, human powered, stabilized monohull, over round bottom?

    W9GFO, Aug 10, 2018 ... 2
    Replies:
    23
    Views:
    3,602
    BlueBell
    Aug 12, 2018
  27. bjn

    L- vs inverted T-hydrofoils on sailboats

    bjn, Mar 19, 2018 ... 2
    Replies:
    23
    Views:
    8,046
    Doug Lord
    Mar 27, 2018
  28. Hobbyboatbuilder

    Reduced buoyancy in the Bow V (Hydrostatics)

    Hobbyboatbuilder, Sep 18, 2017 ... 2
    Replies:
    23
    Views:
    3,355
    messabout
    Oct 3, 2017
  29. Vronsky

    Extra fins on rudder blade...??

    Vronsky, Jul 26, 2016 ... 2
    Replies:
    23
    Views:
    6,537
    FAST FRED
    Jan 10, 2017
  30. MantaRay

    What do you think about this hydrofoil?

    MantaRay, Mar 9, 2013 ... 2
    Replies:
    23
    Views:
    10,250
    Stumble
    Oct 16, 2015
  31. Paddlelite

    Does a boat's glide (deceleration) give a reasonable measure of resistance?

    Paddlelite, Mar 5, 2013 ... 2
    Replies:
    23
    Views:
    6,968
    Anders B
    Mar 30, 2013
  32. Joakim

    Keel profiles, blunt trailing edge and xfoil/XFLR5

    Joakim, Dec 9, 2011 ... 2
    Replies:
    23
    Views:
    14,004
    DCockey
    Dec 18, 2011
  33. Ousmane

    Help Needed: Calculating Canoe Resistance for Mechanical Engineering Project

    Ousmane, Oct 31, 2023 ... 2
    Replies:
    22
    Views:
    2,134
    BlueBell
    Nov 5, 2023
  34. Paul Scott

    Planing amas

    Paul Scott, Sep 28, 2023 ... 2
    Replies:
    22
    Views:
    2,004
    BlueBell
    Oct 1, 2023
  35. zstine

    Wave Resistance on Submarine vs Surface

    zstine, Jun 17, 2022 ... 2
    Replies:
    22
    Views:
    3,975
    jehardiman
    Dec 17, 2022
  36. dustman

    Optimum sail draft for wind speed

    dustman, Jul 14, 2021 ... 2
    Replies:
    22
    Views:
    4,358
    rnlock
    Aug 4, 2022
  37. yootani

    Pontoon, one or two engines?

    yootani, Jul 24, 2021 ... 2
    Replies:
    22
    Views:
    2,777
    BlueBell
    Jul 28, 2021
  38. jehardiman

    There is no "lift"!

    jehardiman, Jul 25, 2013 ... 2
    Replies:
    22
    Views:
    5,982
    Sailor Al
    Feb 10, 2021
  39. Philip

    Experimental Split Sail Design

    Philip, Jul 7, 2020 ... 2
    Replies:
    22
    Views:
    3,040
    Philip
    Jul 13, 2020
  40. Extra300

    Rudder Spacing From Hull ??

    Extra300, May 25, 2015 ... 2
    Replies:
    22
    Views:
    7,060
    Extra300
    May 27, 2015
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