1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The viscous hydrodynamic forces will increase with increase of the velocity of ship?

  1. Oct 27, 2014 #1
    The viscous hydrodynamic forces will increase with increase of the velocity of ship? Can the viscous hydrodynamic forces be neglected if the velocity of ship is small ?
     
  2. jcsd
  3. Oct 27, 2014 #2

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    Not entirely.

    The resistance of a vessel is composed of two parts: the frictional resistance and the residuary or wave-making resistance.

    For vessels whose Froude number is less than 0.1, the residuary resistance can be neglected.
    (The Froude number is a non-dimensional quantity relating the length and speed of a vessel, Fn = (V/gL)1/2)

    The viscous forces produce the frictional resistance of a hull and are always present as long as the vessel is in motion, although at diminishing magnitude.
     
  4. Oct 27, 2014 #3
    Thanks for your answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: The viscous hydrodynamic forces will increase with increase of the velocity of ship?
  1. Pipe diameter increase (Replies: 3)

Loading...