I How does a fluid behave inside of a spherical cavity?

AI Thread Summary
Fluid entering a spherical cavity will create complex flow dynamics, potentially leading to turbulence and increased speed as it fills the space. If the cavity is closed, the air inside will compress, affecting the fluid behavior. Waves entering the cavity may reflect, possibly increasing their amplitude depending on the cavity's dimensions and fluid properties. The discussion emphasizes the need for a detailed scenario, including factors like the type of fluid, pressure conditions, and the source of the influx. A comprehensive problem description is essential for accurate analysis and predictions regarding fluid behavior in this context.
Domenico94
Messages
130
Reaction score
6
Suppose you have a spherical cavity, with a flow of a fluid ( in particular water), entering it from one side. What will happen to this flow? Will it create turbulences? Will speed increase? Will eventual waves entering the cavity be reflected, so creating waves with bigger amplitude?
Suppose the cavity is closed and doesn't allow water to exit .Only to enter.
 
Physics news on Phys.org
What's inside the cavity ? If there's air it will be compressed while th cavern fills up. You'll have to tell us some more details for this scenario to work it out ...
 
Suppose it is on the surface of the sea, for example. So, the lower part is filled with water. The upper part is filled with air.
 
Why do you bring in the sea ? Try to paint a complete picture and set up a complete problem description. We're not telepathic.
Ideal fluid ? 'Infinite pressure' allowed ? What causes the influx ?
 
  • Like
Likes Chestermiller
Thread 'Gauss' law seems to imply instantaneous electric field propagation'

Thread 'Gauss' law seems to imply instantaneous electric field propagation'

Imagine a charged sphere at the origin connected through an open switch to a vertical grounded wire. We wish to find an expression for the horizontal component of the electric field at a distance ##\mathbf{r}## from the sphere as it discharges. By using the Lorenz gauge condition: $$\nabla \cdot \mathbf{A} + \frac{1}{c^2}\frac{\partial \phi}{\partial t}=0\tag{1}$$ we find the following retarded solutions to the Maxwell equations If we assume that...
View full post »
Thread 'A scenario of non-uniform circular motion'

Thread 'A scenario of non-uniform circular motion'

(All the needed diagrams are posted below) My friend came up with the following scenario. Imagine a fixed point and a perfectly rigid rod of a certain length extending radially outwards from this fixed point(it is attached to the fixed point). To the free end of the fixed rod, an object is present and it is capable of changing it's speed(by thruster say or any convenient method. And ignore any resistance). It starts with a certain speed but say it's speed continuously increases as it goes...
View full post »

Thread 'Do electron density waves accompany EM waves in coaxial cables?'

Maxwell’s equations imply the following wave equation for the electric field $$\nabla^2\mathbf{E}-\frac{1}{c^2}\frac{\partial^2\mathbf{E}}{\partial t^2} = \frac{1}{\varepsilon_0}\nabla\rho+\mu_0\frac{\partial\mathbf J}{\partial t}.\tag{1}$$ I wonder if eqn.##(1)## can be split into the following transverse part $$\nabla^2\mathbf{E}_T-\frac{1}{c^2}\frac{\partial^2\mathbf{E}_T}{\partial t^2} = \mu_0\frac{\partial\mathbf{J}_T}{\partial t}\tag{2}$$ and longitudinal part...
View full post »

Similar threads

Doublet flow in Fluid Dynamics between two spheres or cylinders
Replies
0
Views
1K
At what critical Reynolds number does vortex shedding begin?
Replies
9
Views
3K
Does Fluid Dynamics Explain Pressure Gradients in a Frictionless Tube?
Replies
48
Views
6K
How Do Viscous Interactions Differ in Vertical and Horizontal Geometries?
Replies
31
Views
3K
Flow of air through an open tube with a balloon
Replies
9
Views
4K
How is the momentum conserved inside of a fluid?
Replies
4
Views
2K
How can Bernoulli's principle help explain pressure changes in fluid dynamics?
Replies
6
Views
2K
Fluid Dynamics pipeline with a venturi injector
Replies
3
Views
3K
How does a pressure/temperature difference cause a force?
Replies
2
Views
2K
Designing a Closed Loop Water Tunnel for Fluid Dynamics Experiments
Replies
13
Views
16K

Hot Threads

Recent Insights

Back
Top