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Recap: Applications of Viscous Flows Through Pipes | Fluid Mechanics for Mechanical Engineering PDF Download

Recap
 In this course you have learnt the following

 

  • The Fanning’s friction coefficient for a flow through a closed duct,  Recap: Applications of Viscous Flows Through Pipes | Fluid Mechanics for Mechanical Engineering  in terms of wall shear stress, and  Recap: Applications of Viscous Flows Through Pipes | Fluid Mechanics for Mechanical Engineering n  terms of piezometric pressure drop Darcy’s friction factor is defined as f = 4cf
  • Loss of head in a pipe flow is expressed in terms of Darcy’s friction factor as  Recap: Applications of Viscous Flows Through Pipes | Fluid Mechanics for Mechanical Engineering
  • Friction factor in case of laminar fully developed flow is found by N-S equation and is given by  f = 64/ReFriction factor for turbulent flow depends both on Re and the roughness at pipe surface.
  • Flows, in practice, takes place through several pipes together either in series or parallel or in combination of both of them. The relationship between the head causing the flow ΔH and flow rate Q can be expressed as Recap: Applications of Viscous Flows Through Pipes | Fluid Mechanics for Mechanical Engineering where R is the flow resistance in the hydraulic path.
  • The loss of head due to friction over a length L of a pipe. Where the entire flow is drained off uniformly from the side tappings, becomes 1/3 of that in a pipe of same length and diameter, but without side tappings.
  • An additional head loss over that due to pipe friction takes place in a flow through pipe bends and pipe fittings like valves, couplings and so on.
  • The hydraulic power can be transmitted by a pipeline. For a maximum power transmission, the head due to friction in the flow equals to one third of the head at source to be transmitted. The maximum power transmitted efficiency is 67%.
The document Recap: Applications of Viscous Flows Through Pipes | Fluid Mechanics for Mechanical Engineering is a part of the Mechanical Engineering Course Fluid Mechanics for Mechanical Engineering.
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FAQs on Recap: Applications of Viscous Flows Through Pipes - Fluid Mechanics for Mechanical Engineering

1. What are some common applications of viscous flows through pipes?
Ans. Some common applications of viscous flows through pipes include oil and gas transportation, water distribution systems, hydraulic systems, and chemical processing.
2. How does viscosity affect the flow of fluids in pipes?
Ans. Viscosity refers to the resistance of a fluid to flow. In pipes, higher viscosity leads to slower flow rates and increased friction between the fluid and the pipe walls. This can result in higher pressure drops and reduced overall flow efficiency.
3. What factors influence the flow rate of viscous fluids in pipes?
Ans. Several factors influence the flow rate of viscous fluids in pipes, including the viscosity of the fluid, the diameter and length of the pipe, the pressure difference between the inlet and outlet, and the roughness of the pipe walls.
4. How is the pressure drop calculated in viscous flows through pipes?
Ans. The pressure drop in viscous flows through pipes can be calculated using the Darcy-Weisbach equation, which takes into account factors such as the fluid velocity, pipe diameter, pipe roughness, and fluid density. This equation helps determine the amount of pressure loss caused by the fluid's viscosity.
5. What are some challenges in dealing with viscous flows through pipes?
Ans. Some challenges in dealing with viscous flows through pipes include the increased energy requirements for pumping viscous fluids, the potential for pipe clogging due to sedimentation or deposition, and the need for appropriate pipe materials that can withstand the corrosive effects of certain viscous fluids.
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