Subjecting a Magnetorheological Fluid to both poles of a magnet?

In summary, the conversation discusses magnetorheological fluids and their behavior when subjected to a magnetic field. The speaker is curious about what would happen if both poles of a magnet were pointed at the fluid and asks for help understanding Ampere's Law and its relationship to B fields. The other person explains that according to Ampere's Law, the strength of the B field is proportional to the current enclosed, and gives an example of how this would affect the fluid.
  • #1
ben25x
2
0
Hi, I'm new here, but it seems there are some pretty intellectual people running around.
I was researching magnetorheological fluids, simply because I came across them and thought they were really interesting. I learned that when they are subjected to a magnetic field, the iron particles in them line up and make a crystalline form, changing the fluid from liquid to solid.
However, that is a magnetic field. What if both poles of a magnet (same current in alternate electromagnets) were pointed at the fluid? Would anything happen?

Any help would be very appreciated :smile:.
 
Engineering news on Phys.org
  • #2
If you had 2 bar magnets and then pointed them at the fluid, one with the north pole facing and the other with the south pole facing. It would kill the B field a lot.
What does amperes law tell us about B fields. B is proportional to the current enclosed.
If I have 2 current loops on top of each other with their currents in opposite directions, the current enclosed is zero so their is no B field.
 

1. How does a magnetorheological fluid work?

A magnetorheological fluid is a type of smart fluid that can change its viscosity, or resistance to flow, when exposed to a magnetic field. This is due to the presence of tiny iron particles suspended in the fluid. When a magnetic field is applied, the particles align and create chains, causing the fluid to become thicker and more resistant to flow.

2. What are the practical applications of magnetorheological fluids?

Magnetorheological fluids have a wide range of applications, including in dampers for vehicles and buildings, vibration control systems, prosthetics, and haptic devices. They can also be used in clutches and brakes, as well as in shock absorbers for bicycles and motorcycles.

3. Can a magnetorheological fluid be subjected to both poles of a magnet?

Yes, a magnetorheological fluid can be subjected to both poles of a magnet. When exposed to both poles, the fluid will experience a stronger magnetic field, resulting in a thicker and more viscous consistency. This can be useful in applications where a higher level of control over the fluid's viscosity is needed.

4. How is the viscosity of a magnetorheological fluid affected by temperature?

The viscosity of a magnetorheological fluid is not significantly affected by temperature. Unlike traditional fluids, the viscosity of a magnetorheological fluid is primarily determined by the strength of the magnetic field it is exposed to. However, extreme temperatures can affect the performance and stability of the fluid over time.

5. Are there any safety concerns when working with magnetorheological fluids?

While there are no major safety concerns when working with magnetorheological fluids, it is important to handle them with caution as they are still considered industrial chemicals. It is also important to follow proper disposal procedures as the fluids may contain small amounts of iron particles. Additionally, exposure to strong magnetic fields should be avoided, as this can cause the fluid to thicken and become difficult to handle.

Similar threads

B Questions regarding Magnetorheological fluids
    • Electromagnetism
Replies
1
Views
615
B Magnetic fields attracting two disc-shaped magnets
    • Electromagnetism
Replies
11
Views
1K
B Seeing both B field lines and E field lines at the same time
    • Classical Physics
Replies
22
Views
899
Magnetism -- Clarification about North and South magnetic poles
    • Electromagnetism
Replies
15
Views
2K
Deduction about Magnetic Poles surrounding a Conductor
    • Introductory Physics Homework Help
2
Replies
40
Views
900
B Magnetic generator multiple poles. Cancel out or short circuit?
    • Electromagnetism
Replies
8
Views
996
Trying to increase the magnetic flux density
    • Electrical Engineering
Replies
8
Views
9K
I How Does a Magnetic Repulsion Machine Work?
    • Electromagnetism
Replies
5
Views
328
Imperfections in magnet pole pieces
    • General Engineering
Replies
2
Views
1K
How Can Eddy Current Drag Be Minimized in AC Generators?
    • DIY Projects
Replies
10
Views
2K

Hot Threads

Recent Insights

Back
Top