Archive for the ‘Fluid Mechanics 2’ Category
Priming of a centrifugal pump Priming of a centrifugal pump is the process of filling the liquid at the suction pipe
Dimension Dimension is an arbitrary value fixed for a physical quantity. For example, the dimension of physical quantity Length is L and that of acceleration is LT-2. Fundamental dimensions These are M = Mass.
Main components of a centrifugal pump Centrifugal pump has the following main components: Suction flange
Difference between an impulse and a reaction turbine Following are the few points of difference between impulse and a reaction turbine.
Reaction turbine In Reaction turbine major portion of the pressure loss takes place in the rotating wheel. Fluid entering the rotor around its entire circumference is in action. So its rotor need to be so large as compared to the impulse turbine of same power. In reaction turbine, water enters the wheel under pressure and […]
Pelton wheel Pelton wheel is an impulsive turbine used mainly for high head hydro electric schemes. Pelton wheel has the following main components. Nozzle, Runner and buckets, Casing Breaking jet Nozzle Nozzle of a pelton wheel is a circular guide mechanism which guides the water to flow at the desired directions.
Turbo machines : All those machines in which there is a change in whirl or angular momentum are called turbo machines. Types of Turbo machines There are two types of turbo machines. Turbines Pumps Types of Turbines There are two types of turbines. Impulse turbine Reaction turbine
Rotational flow A flow in which net rotation of the fluid element is not equal to zero, is known as rotational flow.
Irrotational flow If the net rotation of the fluid element is equal to zero, then the flow is known as irrotational flow.
Drag Force When there is relative motion between the body and the fluid and the body is completely immersed in a homogeneous fluid , then the body may be subjected to two forces.