Basic terminology of fluid mechanics Steady flow : In this flow velocity of fluid particle don't change with time at fixed point of fluid is called steady flow. Unsteady flow: In this flow velocity of particle change with time at fixed point of fluid is called unsteady fluid . Uniform flow : In this flow the magnitude of flow don't change (same ) at point of fluid . Non-uniform flow: In this flow the magnitude of flow change (different) at point of fluid . Laminar flow : In this flow fluid particle move in smooth and regular in motion is called laminar fluid is called laminar fluid and it is also called steam line flow . Turbulent flow : In this flow fluid particle move in randomly and irregular in motion is called laminar fluid is called laminar fluid. Continuity equation : According to this law the inlet fluid is equal to outlet fluid this law based on the conservation of mass . Q = p.A.V Where the Q is discharge of fluid and p is...
Working of internal combustion : In petrol engine : Suction stroke : piston moves in TDC so vaccum is generate . Then The mixture of fuel and air (in carburetor)is sucked in cylinder . Compression stroke : The mixture of air and fuel is compressed in cylinder up to high temperature and pressure. Expension stroke : Compressed mixture is ignited by spark plug so then expand the flue gases in cylinder and push the piston by great force. That stroke is called power stroke. Because power generate in this stroke. Exhaust stroke : After expension of flue gases then remove the flue gases from the combustion chamber.
Kinematic theory of gas : Pressure is produce due to gas molecular collision Average kinetic energy of gas is depend on molecule of gas Kinematic energy of gas (K) = 1/2.MV2 = 3/2 kT Where m is the mass of gas and k is Boltzmann constant , V is velocity of gas molecule and T is the temperature of gas. Thermal expansion : Material expand due to temperature rise length will also increase L = l.t.(apha) Where alpha is coefficient of thermal expansion Stefan Boltzmann constant : first statement : Power is directly proportional to fourth power of absolute temperature P =kT4 Second law of thermodynamics : Power is directly proportional to area . P = kA So P =sigma .AT4 Entropy : It is the property of which show the degree of randomnes...
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