Tagged Questions
1
vote
1answer
230 views
Wave propagation in an incompressible flow
Incompressible approximation of fluid flow is usually known to be lame in modeling the propagation of any disturbance in it, predicting a speed equal to infinity for the propagation of the ...
2
votes
2answers
141 views
Can wind blowing on smooth water create speckle interference patterns?
On a calm smooth lake, or even a large rain puddle, I've seen transient rough patches on the surface suddenly appear and disappear, and sometimes move across the water some distance before ...
2
votes
2answers
112 views
Why is there a wave on the water surface when I put something in the water?
We've started doing waves in our physics class, but we're doing things very quickly and the teacher doesn't explain anything. And I don't understand why waves work.
I was thinking that when I fill a ...
5
votes
1answer
501 views
Why and how is sound produced when two objects hit each other?
When two objects collide and undergo a partially inelastic collision (so every one we experience in every-day life), they rebound to a certain degree, but kinetic energy is not conserved. Thus, the ...
3
votes
1answer
80 views
Critical bathymetric profile to maximize surge and minimize breaking?
Reading about storm surge, I found it fascinating that the gradual slope of the Gulf Coast of Florida resulted in a much higher storm surge but much lower energy release in breaking waves.
Is there ...
5
votes
2answers
107 views
Wave with mass transport?
I don't think this question has been asked on this forum before (at least I didn't find it).
In the case of a tsunami, an earthquake generates a wave which will travel with the sea/ocean as the ...
4
votes
1answer
137 views
Why do rain waves form and what is their connection to the texture of the surface they're on?
When it rains and water flows down an inclined street, ripples may form that are carried along with the current. Here's a picture with an example of what I'm talking about
I'd like to know what the ...
2
votes
1answer
204 views
How was this pressure pulse propagation speed be derived?
Some lecture notes I was reading through claimed that a pressure pulse propagates through a liquid-filled tube (blood in a vein) with the speed
$$c=\sqrt{\frac{A}{\rho}\frac{dP}{dA}},$$
where $A$ is ...
0
votes
0answers
61 views
Can a wave propagate in an elastic fluid in the absence of volume forces?
A motion (wave) $\mathbf{x}: \mathcal{B}_0 \times [t_0,t_1] \to \mathcal{E}:$ such that
$q-o = \mathbf{x}(p,t)=(p-o)+\mathbf{a}_0 cos(\mathbf{k}_0\cdot(p-o) - \omega_0 t)$
can propagate in an elastic ...
3
votes
2answers
321 views
What is the dominant cause for ocean waves at a beach?
What is the dominant cause for ocean waves at a beach? Are they the result of wind/pressure difference? If so, the waves do seem to exist in similar intensity even during relative quiet times of the ...
1
vote
1answer
137 views
Time evolution of wave spectrum
A useful way of thinking (not only) oceanic waves is to consider them as a superimposition of linear modes: the elevation η of the sea surface is given by:
1: $\eta({\bf x}, t) = ...
5
votes
1answer
168 views
Resonance modes of a cubic box of water which we shake
I don't know hydrodynamics, but I wonder how one would compute resonance modes of a cubic box of water which we shake. I believe the waves would directly depend on the height of water and the width ...
