arunk8186 said:when a fan is started, why is there more air flow at the bottom of the fan and not at the upper region of fan...
>>Also explain if bernoulli principle is involved in this
thx an regards
arun
arunk8186 said:
The Bernoulli Principle is a fundamental concept in fluid dynamics that states that as the speed of a fluid increases, the pressure exerted by the fluid decreases. This principle is based on the law of conservation of energy, which states that the total energy of a closed system remains constant.
In the context of fans, the Bernoulli Principle explains how the blades of the fan push air in one direction, causing a decrease in pressure behind the blades. This decrease in pressure creates a pressure difference between the front and back of the fan, which in turn causes air to flow from the back to the front.
The Bernoulli Principle in fans is influenced by several factors, including the speed of the fan blades, the shape and angle of the blades, and the density of the fluid (air) being moved. These factors can also be adjusted to control the amount of air flow and the direction of the air flow from the fan.
The Bernoulli Principle is a key concept used in the design of fans, as it allows engineers to create efficient and effective fan blades that can move air with minimal energy input. By understanding how the Bernoulli Principle works, fan designers can optimize the shape, size, and speed of the blades to achieve the desired air flow and pressure difference.
While the Bernoulli Principle is a useful concept in understanding how fans work, it is important to note that it is not the only factor that influences air flow in fans. Other factors, such as air viscosity and turbulence, also play a role and can affect the performance of fans. Additionally, the Bernoulli Principle applies to ideal fluids, which may not always accurately represent real-world conditions.