Fluid Speed in Pipe: Is Turbine an Obstacle?

In summary, a turbine in a pipe will not affect the velocity of the fluid if it is not leaking and the inlet and outlet are the same size. However, there will be a pressure drop across the turbine, which could potentially slow down the velocity depending on the fluid source. It should also be noted that this explanation is based on an electrical background and may not be entirely accurate for hydraulics.
  • #1
milan.007
9
0
Just a general question, if there is an obstacle in a pipe, such as a turbine, will the speed of the fluid before the turbine be the same as after it? Or will the turbine cause the speed in the whole pipe to slow down?
 
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  • #2
milan.007 said:
Just a general question, if there is an obstacle in a pipe, such as a turbine, will the speed of the fluid before the turbine be the same as after it? Or will the turbine cause the speed in the whole pipe to slow down?

If the turbine isn't leaking - the mass of the fluid entering the turbine equals the mass of the fluid leaving. So if the inlet and outlet are the same size and the fluid is not compressible, the the velocity in and out are the same. There will be a pressure drop across the turbine - has to be or it can not extract any energy.

As for your second question: It could. The turbine will have a pressure drop across it. Depending on the fluid source, the additional pressure drop could easily slow down the velocity.

Two disclaimers:
1. I've told you more than I know.

2. This is hydraulics as explained per an electrical background


ice
 
  • #3
Thanks alot, that answers my question.
 

1. What is fluid speed in a pipe?

Fluid speed in a pipe refers to the velocity at which a fluid, such as water or gas, travels through a pipe. It is typically measured in units of meters per second (m/s) or feet per second (ft/s).

2. How is fluid speed affected by the presence of a turbine in a pipe?

The presence of a turbine in a pipe can significantly affect fluid speed. The turbine creates resistance to the flow of fluid, causing it to slow down and increase in pressure. The exact effect on fluid speed will depend on factors such as the size and design of the turbine, as well as the fluid properties.

3. Is a turbine considered an obstacle in a pipe?

Yes, a turbine is considered an obstacle in a pipe as it obstructs the flow of fluid and creates resistance. This resistance can impact the overall flow rate and pressure of the fluid in the pipe.

4. How does the size of a turbine affect fluid speed in a pipe?

The size of a turbine can have a significant impact on fluid speed in a pipe. A larger turbine will generally create more resistance and slow down the fluid more than a smaller turbine. However, other factors such as the design and placement of the turbine can also play a role.

5. Can a turbine be used to control fluid speed in a pipe?

Yes, a turbine can be used to control fluid speed in a pipe. By adjusting the size, design, and placement of the turbine, engineers can manipulate the resistance and flow rate of the fluid in the pipe. This can be useful in various applications, such as regulating the flow of water in a dam or controlling the speed of gas in a pipeline.

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