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!

Wave equation and wind?

  1. May 1, 2006 #1
    I believe the PDE Utt-v^2*(Uxx+Uyy+Uzz) can be used to desribe air pressure, and how this pressure changes during time (with a given pressure in t=0)
    My question is, does this equation also takes into account effects of movement of particles? Such as wind? Can it describe wind?
    Or do we need some other equation to descibe wind?
    What equation can be used to describe wind?

    Thanks in advance.
  2. jcsd
  3. May 1, 2006 #2


    User Avatar
    Science Advisor
    Gold Member

    This equation is often used to calculate pressure and density wave propagations in some fluid, when one assumes small departures from the mean value and incompressibility (Linear Acoustics). The wave equation only takes into account convective transport of momentum and unsteadiness of the flow field, so there is no dissipative effect.

    The equations for describing the motion of wind over a complex geometry and taking into account earth rotation effects, buoyancy, and dissipation are the Navier-Stokes equations. Usually the motion of wind is turbulent, so we use an special averaged version of the N-S equations (RANS) or we solve directly the N-S equations using numerical simulations (DNS).
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Wave equation and wind?
  1. Wind generated waves (Replies: 12)

  2. Wave equation (Replies: 3)

  3. Waves equation (Replies: 5)

  4. Wave Equation (Replies: 1)