Thanks Charles would this include mechanical waves ?
Intuitively this makes sense in fluids as they are unable to sustain shear any disturbance would be in all directions is this the logic ?
Does Hyugens principle apply in three dimensions ?
If a surface wave (for simplicity an ocean wave) is propagating along the x-axis we know that this wave ray is a point source for wavelets on the y-axis but what about the z axis?
If this diagram was 3d would we see a spherical wave front...
Hi All
Again thanks for your replys
EDIT : reading more about the phase and group velocities I can probably limit my enquiry to shallow water waves where I understand that these become equal.
Yes this is the really the query- If aeration (above 1/2 wavelength) depth changes either the...
Thanks for all your replies guys , i always like when a thread gets a few good minds involved. I too have been unsettled by the notion that nothing happens at the interface.
I have searched for alternative ways to express Wave velocity and came across this for sound waves. Not being a surface...
Suppose a ocean wave encountered a section of ocean which had a higher level of aeration from gas such as methane escaping from the seafloor.
Due to the aerated sections apparent lower density would the wave travel slower through the aerated section than its propagation speed thru pure seawater ?
Suppose I have a wave tank partially filled with a shear thickening Newtonian fluid (Oobleck), on top of which sits a layer of water (separated by a thin membrane to prevent mixing)
If I propagate a surface wave in the water layer how will it conduct itself at the Newtonian/Non Newtonian Fluid...
I haven't revised it, . I started with the statement that the cable was under tension and the wave couldn't go around That remains the scenario i still wish to explore. I'm not sure what else i can add to the description
The examples i can find about reflection from an impedance discontinuity...
If it was sufficiently permeable wouldn't the wave be allowed to transmit ? I'm assuming it would be impermeable to have any effect ? The speed range in question for ocean waves is 10-20 meters per second ? is that slow speed or fast?
Yes that's probably a good description! but under tension... I'm trying to understand how the surface wave (at depth) would interact with it . without the tension i would see the sheet just transmit the wave ..i might be wrong ?
No i am not really interested in the boat, its more an analogy- it...
I'm trying to figure out what happens to a tension-ed anchor line when encountered by a surface wave (transverse and longitudinal )
Assuming a 2 dimensional view, or that the cable is sufficiently wide that the wave cannot go 'around it' what happens to the path and speed of the surface wave...
Hi guys thanks for all the responses,I will try and explain my question a bit better
Using the Huygens-Fresnel principle which states that every point on a wave front is a source of wavelets I have constructed two scenarios -
1. A straight wave where the depth profile is uniform along the wave...
There are many explanations on the internet, of refraction and convergence of ocean waves entering shallow water around a headland
However they all go no deeper than this statement
"Where the water is shallow the wave rays converge wave energy is greater where the wave rays spread out the...
In an Inviscid fluid would the no slip condition exist?
If it didn't would it follow that the free stream velocity would exist at the wall ?.
If this was the case would surface roughness still present an orthogonal area upon which the kinetic energy of the fluid would interact causing a...
Thanks Chester
Is the first part a correct interpratation of what you are explaining ?
In the absence of a damper (viscous dissipation) the conversion between potential energy and kinetic energy within a fluid is in itself always an isentropic process- as no mechanical energy is lost.