Circulating a fluid at a very high speed in a spiral pipe

In summary: I am not sure what you are trying to say.I don't think so, the mass still has the same momentum.No. A force is needed in order to change the momentum of the fluid.
  • #36
A.T. said:
What are the forces you desire. What is the goal here?

To find a way to produce more thrust than this one: Ion Thruster, using only electric current.
 
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  • #37
What if?

What if the system is splitted in 3 sections: blue, yellow and red?

http://www.2live.ro/demo/sections.bmp

Blue section - fluid flow in this section is constant preserving the velocity vector, the mass in this case comes into pipe and leaves the pipe with the same momentum.
Yellow section - this section is composed by a liquid slug generator (gas/liquid) and a liquid separator.
Red section - the role of this section is to accelerate the liquid slugs. The high momentum of the liquid slugs create considerable force. We have compressibility and pressure wave propagation, so there must be instantaneous net forces in red section.
 
  • #38
iridiu said:
What if the system is splitted in 3 sections: blue, yellow and red?

http://www.2live.ro/demo/sections.bmp

Blue section - fluid flow in this section is constant preserving the velocity vector, the mass in this case comes into pipe and leaves the pipe with the same momentum.
No. It leaves with the opposite momentum. The velocity vector is flipped in the blue section.
 
  • #40
In these rudimentary constructions I acquired a superior thrust force...

Thrust or torque? I don't see any evidence in either vid that you have made a reactionless drive. You are rotating the Earth the other way.

No doubt the moderators will be along soon to close the thread.
 
  • #41
CWatters said:
No doubt the moderators will be along soon to close the thread.
At least it's not magnets again.
 
  • #42
iridiu said:



If the water circulates one way, the platform will turn the other way. That is just conservation of angular momentum. In the first case the tubes can also transfer momentum.
 
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  • #43
Just in case he doesn't get it...
Torque.jpg
 
  • #44
CWatters said:
Just in case he doesn't get it...
https://www.physicsforums.com/data/attachments/56/56407-7e82b012611c54eaf0a473a00967f957.jpg [Broken]
In that first case the floating platform reverses the linear momentum of the water, so it's pulled out, and the elastic tubes (which also straighten under pressure) make it swing.

The angular momentum conservation explanation was mainly referring to the second video, with the hanging platform.

Tasks for iridiu:

1) Replace your magic spiral with a straight piece of tube on the hanging platform. Does it change the result?

2) Stop switching the pump on and off. Just let it run until an equilibrium is established, against a significant counter torque of the strings. For this remove the straight piece of the string, and just attach the 4 strings directly to the ceiling. Is the equilibrium orientation with pump running different from the equilibrium orientation with pump off?
 
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  • #45
I know we do not have the same point of view, but I think there are more forces that manifest themselves simultaneously in the "magic spiral", one is explained here: http://www.google.com/patents/US6321783
Elasticity of the tube is very important, because there is vibration and mechanical resonance.
 
  • #46
iridiu said:
I know we do not have the same point of view,
It's not a matter of opinion, but of experiment. Why don't you replace the spiral with a straight piece? Any honest experimenter would have done this control test on his own.
 
<h2>1. What is the purpose of circulating a fluid at a very high speed in a spiral pipe?</h2><p>The purpose of circulating a fluid at a very high speed in a spiral pipe is to increase the rate of flow and create turbulence, which can improve heat transfer and mixing in industrial processes.</p><h2>2. How is the speed of the fluid determined in a spiral pipe?</h2><p>The speed of the fluid in a spiral pipe is determined by the rotational speed of the pipe and the geometry of the spiral. The faster the rotation and the tighter the spiral, the higher the speed of the fluid.</p><h2>3. What are the advantages of using a spiral pipe for circulating fluids?</h2><p>Using a spiral pipe for circulating fluids has several advantages. It allows for a higher flow rate, increased turbulence, and improved heat transfer and mixing. Additionally, spiral pipes are compact and can be easily integrated into existing systems.</p><h2>4. Are there any limitations to using a spiral pipe for circulating fluids?</h2><p>One limitation of using a spiral pipe for circulating fluids is that it may not be suitable for highly viscous fluids. The tight spiral may cause excessive pressure drop and hinder the flow of these fluids. Additionally, the high rotational speed may require more energy and maintenance costs.</p><h2>5. What are some common applications of circulating fluids at high speeds in spiral pipes?</h2><p>Spiral pipes are commonly used in industrial processes such as chemical reactions, heat exchangers, and wastewater treatment. They are also used in research and development for mixing and agitation purposes.</p>

1. What is the purpose of circulating a fluid at a very high speed in a spiral pipe?

The purpose of circulating a fluid at a very high speed in a spiral pipe is to increase the rate of flow and create turbulence, which can improve heat transfer and mixing in industrial processes.

2. How is the speed of the fluid determined in a spiral pipe?

The speed of the fluid in a spiral pipe is determined by the rotational speed of the pipe and the geometry of the spiral. The faster the rotation and the tighter the spiral, the higher the speed of the fluid.

3. What are the advantages of using a spiral pipe for circulating fluids?

Using a spiral pipe for circulating fluids has several advantages. It allows for a higher flow rate, increased turbulence, and improved heat transfer and mixing. Additionally, spiral pipes are compact and can be easily integrated into existing systems.

4. Are there any limitations to using a spiral pipe for circulating fluids?

One limitation of using a spiral pipe for circulating fluids is that it may not be suitable for highly viscous fluids. The tight spiral may cause excessive pressure drop and hinder the flow of these fluids. Additionally, the high rotational speed may require more energy and maintenance costs.

5. What are some common applications of circulating fluids at high speeds in spiral pipes?

Spiral pipes are commonly used in industrial processes such as chemical reactions, heat exchangers, and wastewater treatment. They are also used in research and development for mixing and agitation purposes.

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