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hunt_mat's latest activity
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
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I don't know. It's certainly something that I'm not going to be concerned about when I deal with variable charge density, although I am...
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
I'm familiar with Fickian diffusion.
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
The question remains, as my model includes electric fields, fluid velocity and a free surface, what equation do I add to close the...
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
I had a look at their paper, and it looks like nonsense to me. In their equation (2), they seem to mix vectors and scalars in a single...
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
The surface is also moving. So could it theoretically move with the charge, so no surface charge forms?
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
My MHD paper is apparently too large to upload.
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
I am familiar enough to have written a paper on free surface flows in MHD in the Journal of Plasma Physics, so I'm fairly familiar with...
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
I have written down the set up of the problem I'm interested in here.
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
If I'm considering only small perturbations from the equilibrium, then it's still a good assumption?
Sep 23, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
So I can ignore surface charge for my problem, then?
Sep 22, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
Isn't the normal component of the \mathbf{D}=\epsilon\mathbf{E} continuous across the boundary if there is no surface charge?
Sep 22, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
Surely only the tangential part of the electric field is continuous at the boundary. You have to make a calculation for the normal...
Sep 22, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
Yes. I have solved the result when there is no electric charge, I thought that the next logical step(for a mathematician that is) is to...
Sep 22, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
Unfortunately, the fluid is infinite in extent.
Sep 22, 2025
H
hunt_mat
replied to the thread
A
Free surface problem in electrohydrodynamics
.
That is something to be found as part of the solution. I'm connecting the Euler equations with Maxwell's equations to find the resulting...
Sep 22, 2025
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