I wouldn't always be so credulous of what "somebody" tells you. Friction loss depends not only on L/D, but also V.foo9008 said:
Well, why do you think this situation would be so?foo9008 said:
sorry , i mean friction due to entrance effect . why it is negligible in long pipe ? the friction formula is given by formula f(L/D)(V^2)/2g , as L is big , friction loss is big . so the friction loss is big , right ?SteamKing said:
So, if the friction loss in a long pipe is relatively large, what about the ratio of the entrance loss to the friction loss in the long pipe? Is it a large ratio or a small ratio?foo9008 said:
if the friction loss in a long pipe is relatively large, the ratio of the entrance loss to the friction loss in the long pipe woul be small , ?SteamKing said:
foo9008 said:
the friction loss in short pipe is small , so the friction due to entrance effect is significant in short pipe compared to the friction loss in short pipe?SteamKing said:
Yes.foo9008 said:
Friction loss refers to the energy that is lost as a fluid flows through a pipe due to the resistance caused by the pipe's surface. In shorter pipes, there is less surface area for the fluid to flow through, which means that the velocity of the fluid is higher. As the velocity increases, so does the friction loss.
Friction loss can have a significant impact on the efficiency of a system as it results in a decrease in the amount of energy available for the fluid to do work. This can lead to a decrease in flow rate and an increase in the amount of energy required to maintain the flow.
The main factors that contribute to friction loss in short pipes include the roughness of the pipe's surface, the velocity of the fluid, and the diameter of the pipe. The rougher the surface, the higher the friction loss will be. Additionally, as the velocity of the fluid increases or the diameter of the pipe decreases, friction loss will also increase.
One way to reduce friction loss in short pipes is by using pipes with smoother surfaces. This can be achieved by using pipes made of materials such as PVC or by regularly cleaning and maintaining the pipes. Additionally, decreasing the velocity of the fluid or increasing the diameter of the pipe can also help reduce friction loss.
Yes, friction loss in short pipes can be a significant concern, especially in systems where energy efficiency is crucial. It can lead to increased energy consumption and decreased flow rates, which can affect the overall performance of the system. Therefore, it is important to consider and minimize friction loss when designing and maintaining pipe systems.
