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tonyjk
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Hello... I can't find the difference between the pressure drop in a pipe due to frictionnal loss and the Pressure difference that cause the flow like in Poiseuille Flow.. Thanks
Travis_King said:If you are asking how this solution to pressure drop is associated with similar ideas such as the Darcy-Weisbach equation, the answer is that the analytical (experimentally derived) Darcy-Weisbach equation is employable under broader circumstances.
In theory this is a nice equation to look at to understand where the mechanical energy is being lost to, but in practical applications of pressure drop analysis it is rarely, if ever, employed.
Basically: Poiseuille equation is theoretical, solutions like Hazen-Williams and Darcy-Weisbach are analytical.
Pressure drop in pipes refers to the decrease in pressure as fluid flows through a pipe due to factors such as friction, changes in pipe diameter, and elevation changes. It is an important concept in fluid dynamics and can impact the efficiency and performance of a piping system.
Pressure drop in pipes can be calculated using the Darcy-Weisbach equation, which takes into account factors such as fluid velocity, pipe diameter, and roughness of the pipe surface. Other methods, such as the Hazen-Williams equation, can also be used depending on the specific characteristics of the piping system.
Several factors can affect pressure drop in pipes, including fluid properties (such as viscosity and density), pipe characteristics (such as diameter and roughness), and flow conditions (such as velocity and turbulence). Changes in these factors can result in changes in pressure drop.
Pressure drop and flow in pipes are directly related. As pressure drop increases, flow rate decreases, and vice versa. This is because pressure drop represents the resistance to flow in a pipe, and a higher pressure drop requires more energy to maintain the flow rate.
There are several ways to reduce pressure drop in pipes, including increasing pipe diameter, smoothing out rough surfaces, and optimizing flow conditions. Additionally, selecting the appropriate type of pipe and using efficient pumping systems can also help minimize pressure drop and improve overall performance.