Tagged Questions

0
votes
1answer
284 views

Lamb-Chaplygin dipole

There is an interesting issue of hydrodynamics: whirlpools. I want to learn about the Lamb-Chaplygin dipole. Lamb-Chaplygin dipole corresponds to a steady solution of the two dimensional Euler ...
0
votes
0answers
36 views

Vlasov equation in Liddle and Lyth or Dodelson's book

I am concerned about equations 2, 5 and 6 on page 2 of arXiv:astro-ph/0606028. The paper refers them to the book by Peebles which I don't have access to at this point. I believe that these ...
0
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0answers
71 views

Energies decay in 3D homogeneous rotating turbulence

In three-dimensional rotating homogeneous turbulence governed by the hyper-viscous Navier-Stokes equation with an additional Coriolis force in a three-periodic setup: \begin{equation} ...
3
votes
3answers
355 views

Equations of fluid dynamics and differential geometry

Where can I look for equations of fluid motion written in terms of nifty things from differential geometry like exterior derivative, Hodge dual, musical isomorphism? Preferably both with and without ...
2
votes
1answer
115 views

Pressure loss after water goes up and back down 7 stories

I live on the first floor of a seven story apartment building. We are considering our hot water options and one of them is a solar-powered water heater in which water is heated in a specialised device ...
5
votes
1answer
354 views

Turbulence parameterization from gravity - fluid dynamics correspondence

I`m looking for a nice introductary reference that explains how the turbulence coefficient or any kind of turbulence parameterization (in view of applications to atmospheric turbulence for example) ...
15
votes
1answer
369 views

Minimum viscosity of liquids

In a lecture by Purcell he mentions that he notices that there aren't any liquids with viscosities much less than that of water, even though they go up seemingly unbounded. In an endnote (endnote 1 in ...
3
votes
1answer
70 views

Bifurcation of convection of fluid in container, when adding temperature

I once read a paper, in which: a fluid in a container was heated from below, after reaching temperature $T_1$, a circular motion (convection) was clearly distinguishable, in form of cylinder, after ...
1
vote
3answers
304 views

Video or animation for continuity equation in water pipes

I am looking for an animation or even better a video with a real experiment, which shows that at constant flow rate the speed of water in a pipe is higher at narrower parts of a pipe. I googled ...
2
votes
2answers
474 views

How do swimfins work?

I'm interested primarly on bifins (one fin for each foot) with a monofin movement, e.g. undulatory. I'd like to know how they work and where I can find articles/books about it.
0
votes
1answer
328 views

Examples of immiscible or wall-climbing liquids

I am very interested in the physics of immiscible fluids. I would like to ask you if you know any source or list of experiments done by others, with two or three liquids. I am interested in the final ...
1
vote
1answer
95 views

Surface tension of N non-mixing fluids

I am a mathematician, not a physicist, so please be gentle with me if I write something wrong. Consider a bounded, regular container $\Omega$, which is filled with the fluids $F_1,...,F_N$ which do ...
0
votes
1answer
405 views

The shear stress assumption in Navier Stokes

Viscous fluid mechanics starts with the assumption that shear stress is linearly related to velocity by $$\tau = \mu\frac{du}{dy},$$ but it later turns out that some forces in high speed situations go ...
6
votes
2answers
317 views

Analogue of Princeton Companion to Mathematics for Physics?

I would like to know if there are compendiums much like the Princeton Companion to Mathematics for physics (especially classical physics: fluid mechanics, elasticity theory, Hamiltonian formalism of ...
2
votes
1answer
385 views

Water droplet evaporation due to humidity and temperature

I am conducting an experiment that requires comparison to models for a water droplet's change in size due to evaporation. I've found plenty of papers, but they all seem to require measurement of the ...
3
votes
1answer
305 views

How to derive the Karman-Howarth-Monin relation for anisotropic turbulence?

I find the derivation of the Karman-Howarth-Monin relation in the book Turbulence from Frisch (1995) a bit to short. Can someone point me to a more detailed derivation of that relation, if possible in ...
7
votes
3answers
453 views

Boundary layer theory in fluids learning resources

I'm trying to understand boundary layer theory in fluids. All I've found are dimensional arguments, order of magnitude arguments, etc... What I'm looking for is more mathematically sound arguments. ...