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Fluid flow operations- Applications Of Fluid Mechanics & Rheological Classifications Of Fluid.


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Applications Of Fluid Mechanics & Rheological Classifications Of Fluid.

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Fluid flow operations- Applications Of Fluid Mechanics & Rheological Classifications Of Fluid.

  1. 1. Fluid Flow Operations Assignment No.1 Applications Of Fluid Mechanics & Rheological Classifications Of Fluid. Name-Ajinkya Sanjay Khandizod S.E. B. 31
  2. 2.  Fluid Flow Operations deals with the behaviour of Fluids usually containing Liquids and gases.  It has following branches: i.fluid statics ii.fluid kinematics iii.fluid dynamics.
  3. 3. Daily applications of fluid mechanics:- 1. Refrigerators and Air Conditioners. 2. Hydroelectric Dams. 3. Sailing. 4. Pump & motor,etc.
  4. 4. 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 temperature. •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. 2.Hydroelectric dams: •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.
  5. 5. 3.Sailing: •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.
  6. 6. Rheology : Rheology is the science of the flow and deformation of matter (fluid) under the effect of an applied force. Rheological properties of fluids:- • Viscosity • Shear stress • Shear rate • Flow index • Consistency • Yield stress
  7. 7. RHEOLOGICAL CLASSIFICATION OF FLUIDS NEWTONIAN FLUIDS τ = µ du dy NON NEWTONIAN FLUIDS τµ du dy Purely Viscous Fluids Visco elastic Fluid s Time Independent Time Dependant Air, water and many other engineering fluids behave as Newtonian fluids under normal circumstances •Pseudoplastic Fluids •Fine particle suspensions •DilatantFluids •Ultrafine irregular particle suspensions •Ideal Plasticsor Bingham Fluids •Water suspensions of clay and fly ash •Thixotrophic fluids decreasing . •Crude oils, bentonitic drilling fluid. •Visco-elastic Fluids •Liquid solid combinations in pipe flow and polymerised fluids with drag-reduction features. •Rheopectic Fluids •Rare liquid-solid suspensions