Fluid flow operations- Applications Of Fluid Mechanics & Rheological Classifications Of Fluid.
Fluid Flow Operations
Applications Of Fluid Mechanics &
Rheological Classifications Of Fluid.
Name-Ajinkya Sanjay Khandizod
S.E. B. 31
Fluid Flow Operations deals with the behaviour of Fluids usually
containing Liquids and gases.
It has following branches:
Daily applications of fluid mechanics:-
1. Refrigerators and Air Conditioners.
2. Hydroelectric Dams.
4. Pump & motor,etc.
1.Refrigerators and Air Conditioners:
•The refrigerant absorbs the heat from evaporator, which is at a low
temperature, and distributes that heat to the atmosphere, which is at a high
•In air conditioners, the refrigerant absorbs room heat and throws it in to the
atmosphere keeping the room cool. The whole process of refrigerators and
air-conditioners depends on the use of a refrigerant.
•The steel and concrete structure of hydroelectric dam holds back millions of
tons of water from the river or other body. The water nearest the top has
enormous potential energy.
•Hydroelectric power is generated by allowing controlled streams of this
water to flow downward, collecting kinetic energy that is then transferred to
powering turbines, which in turn creates electric power.
•The principle of sail is same as an airplane wing. Sail boats have two parts: a sail
which points north and a keel which points on the opposite direction.
•When the wind movements are on one side it fills the sail while the air flowing on
the other side is moving faster and cannot push as hard and thus the sail receives a
force which is perpendicular to the direction of the wind.
•Usually this would not push the boat against the wind but the keel of the boat
again resists much of the horizontal movement so that the boat only moves in
forward direction, providing that the combined forces that are pushing the boat
perpendicular to the wind are greater than the force of the wind pushing the
entire boat and sails backwards.
4. Pump & motor:
Pump is a device which is made for moving fluid, and it is done by developing a
pressure difference, causing the fluid to move from an area of high pressure to low
pressure. Its procedure is based on both Pascal's and Bernoulli's principles.
Rheology is the science of the flow and deformation of matter
(fluid) under the effect of an applied force.
Rheological properties of fluids:-
• Shear stress
• Shear rate
• Flow index
• Yield stress
RHEOLOGICAL CLASSIFICATION OF FLUIDS
FLUIDS τ = µ du
NON NEWTONIAN FLUIDS τµ du
Purely Viscous Fluids
Visco elastic Fluid s
Time Independent Time Dependant
Air, water and many
fluids behave as
•Water suspensions of
clay and fly ash
•Crude oils, bentonitic drilling fluid.
pipe flow and
•Rare liquid-solid suspensions