Hydrodynamics and Aerodynamics

Technical discussion on fluid dynamics: theory and analysis.

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  1. sanantonnio

    Space between mizzen mast and mainsail

    sanantonnio, Dec 7, 2017 ... 2 3 4
    Replies:
    46
    Views:
    7,247
    Gary Baigent
    Feb 5, 2018
  2. Konstanty

    Induced drag

    Konstanty, Aug 15, 2018 ... 2 3
    Replies:
    32
    Views:
    7,224
    patzefran
    Apr 12, 2019
  3. Alfonso

    Hull optimization

    Alfonso, Jun 1, 2011 ... 2
    Replies:
    16
    Views:
    7,221
    DCockey
    Jun 5, 2012
  4. LongCruise

    Active Drag Reduction?

    LongCruise, Mar 15, 2021 ... 2
    Replies:
    27
    Views:
    7,215
    BMcF
    Jan 28, 2022
  5. fredrosse

    External Chine Logs

    fredrosse, Feb 16, 2012
    Replies:
    7
    Views:
    7,206
    fredrosse
    Feb 19, 2012
  6. solarguy

    Bulbous Bow Canoe

    solarguy, Nov 1, 2014 ... 2
    Replies:
    19
    Views:
    7,182
    Ilan Voyager
    Jan 15, 2015
  7. leop

    Is this a Planning, Displacement, or Combination Hull

    leop, Jan 9, 2014 ... 2 3
    Replies:
    40
    Views:
    7,160
    leop
    Jan 23, 2014
  8. BobBill

    Rudder Blade Shape Question

    BobBill, Mar 30, 2011
    Replies:
    14
    Views:
    7,151
    BobBill
    Apr 3, 2011
  9. Alan Cattelliot

    AC75 : How to get rid of the additionnal parasitic drag when foiling ?

    Alan Cattelliot, Mar 22, 2023 ... 4 5 6
    Replies:
    75
    Views:
    7,146
    Alan Cattelliot
    Apr 27, 2023
  10. jcamilleri

    Dynamic Stability of planing hulls

    jcamilleri, Feb 21, 2013 ... 2
    Replies:
    18
    Views:
    7,124
    Ad Hoc
    Jul 6, 2017
  11. Woobs

    Transom Step

    Woobs, Mar 19, 2017
    Replies:
    8
    Views:
    7,119
    Konstanty
    Mar 22, 2017
  12. Robert Jansen

    Solution to problem of hull speed

    Robert Jansen, Mar 13, 2015 ... 2 3 4
    Replies:
    55
    Views:
    7,116
    daiquiri
    Mar 18, 2015
  13. Submarine Tom

    What Makes a Stone Skip When Tossed Across a Pond?

    Submarine Tom, Mar 29, 2012 ... 2 3 4
    Replies:
    57
    Views:
    7,108
    masalai
    Apr 26, 2012
  14. Rabah

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

    Rabah, May 10, 2019
    Replies:
    12
    Views:
    7,096
    Rabah
    Mar 7, 2022
  15. Woobs

    Donzi Hull modification

    Woobs, Sep 1, 2015
    Replies:
    11
    Views:
    7,093
    BMcF
    Jan 7, 2016
  16. eXXonWaldez

    Rudder Moment Calculation

    eXXonWaldez, Aug 15, 2013
    Replies:
    12
    Views:
    7,070
    Murat124
    Oct 20, 2013
  17. stringy

    Trim plate trailing edge cup ?

    stringy, Jun 9, 2011 ... 2
    Replies:
    16
    Views:
    7,061
    keysdisease
    Jun 27, 2011
  18. Extra300

    Rudder Spacing From Hull ??

    Extra300, May 25, 2015 ... 2
    Replies:
    22
    Views:
    7,057
    Extra300
    May 27, 2015
  19. Janne Enlund

    Predict flow lines along hull

    Janne Enlund, Mar 28, 2015 ... 2 3
    Replies:
    41
    Views:
    7,054
    Janne Enlund
    Mar 31, 2015
  20. mitchgrunes

    How much less efficient would a planing hull sea kayak be?

    mitchgrunes, Jul 11, 2020 ... 2 3
    Replies:
    30
    Views:
    7,040
    mitchgrunes
    Jul 23, 2020
  21. cmckesson

    New Book: Hydrodynamics of High-Performance Marine Vessels

    cmckesson, Jul 23, 2015 ... 2
    Replies:
    18
    Views:
    7,010
    bit
    Aug 27, 2015
  22. TANSL

    Foils for sailing boats

    TANSL, Oct 22, 2017 ... 2 3
    Replies:
    40
    Views:
    6,997
    TANSL
    Feb 8, 2018
  23. motorbike

    Rudder vibration

    motorbike, Aug 22, 2017 ... 2
    Replies:
    19
    Views:
    6,984
    PAR
    Oct 1, 2017
  24. Alan Cattelliot

    How often do you use of CFD (Computational Fluid Dynamics) ?

    Alan Cattelliot, Feb 14, 2023 ... 3 4 5
    Replies:
    61
    Views:
    6,973
    Alan Cattelliot
    Apr 27, 2023
  25. Paddlelite

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

    Paddlelite, Mar 5, 2013 ... 2
    Replies:
    23
    Views:
    6,967
    Anders B
    Mar 30, 2013
  26. dpaws

    Confined channel wave resistance effects - narrowboats

    dpaws, Mar 8, 2016 ... 2
    Replies:
    21
    Views:
    6,924
    SukiSolo
    Mar 18, 2016
  27. fpichel

    rotating mast/fixed boom?

    fpichel, Jul 19, 2011
    Replies:
    14
    Views:
    6,912
    Gary Baigent
    Nov 24, 2011
  28. DennisRB

    Spade rudder design for 40 foot sailboat

    DennisRB, Dec 15, 2013
    Replies:
    0
    Views:
    6,882
    DennisRB
    Dec 15, 2013
  29. misanthropicexplore

    Sail performance metrics

    misanthropicexplore, Jul 25, 2018 ... 2 3
    Replies:
    44
    Views:
    6,857
    CT249
    Dec 12, 2018
  30. ychodneker

    Modelling in ANSYS AQWA ( Hydrodynamic Diffraction ) Workbench platform

    ychodneker, Sep 11, 2014
    Replies:
    3
    Views:
    6,857
    ychodneker
    Sep 18, 2014
  31. redviking

    Crouch's Formula for high speed ferry catamarans

    redviking, Mar 30, 2012
    Replies:
    13
    Views:
    6,833
    sottorf
    May 2, 2012
  32. gonzo

    Demistifying Froude number

    gonzo, Feb 2, 2020 ... 2
    Replies:
    23
    Views:
    6,824
    Mikko Brummer
    Feb 10, 2020
  33. Ittiandro

    calculating lift/Bernoulli forces on hydrofoil for windsurfing board

    Ittiandro, Mar 20, 2018
    Replies:
    2
    Views:
    6,815
    Doug Lord
    Mar 28, 2018
  34. Windvang

    Delft Systematic Deadrise Series

    Windvang, Oct 6, 2017 ... 2
    Replies:
    23
    Views:
    6,799
    schakel
    Sep 13, 2018
  35. Binze

    Pressure sensors for measuring pressure field on the bottom of the planing hull?

    Binze, Apr 14, 2014 ... 2
    Replies:
    16
    Views:
    6,774
    Binze
    Apr 17, 2014
  36. 23feet

    Rudder shape

    23feet, Oct 9, 2015
    Replies:
    9
    Views:
    6,740
    23feet
    Oct 24, 2015
  37. Windmilljohn

    Unusual concept for analysis

    Windmilljohn, Apr 30, 2011 ... 2
    Replies:
    18
    Views:
    6,697
    Nabeelarslan
    Jan 30, 2012
  38. Sherkin

    Large Hydrofoil/heaveplate

    Sherkin, Feb 13, 2014 ... 2
    Replies:
    26
    Views:
    6,687
    johnhazel
    Apr 18, 2014
  39. quequen

    Online Resistance calculator

    quequen, Feb 24, 2012 ... 2
    Replies:
    19
    Views:
    6,621
    quequen
    Jul 7, 2012
  40. JMayes

    Understanding hydrodynamics 101?

    JMayes, Jun 23, 2011
    Replies:
    6
    Views:
    6,613
    Chickadee
    Oct 27, 2011
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