EBMF4103 (Chapter 8) Fluid Mechanics for Mechanical Engineering

EBMF4103 (Chapter 8) Fluid Mechanics for Mechanical Engineering

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Unformatted text preview: Copyright © ODL Jan 2005 Open University Malaysia 1 Subject Matter Expert/Author: Assoc Prof Dr Shahrir Abdullah Faculty of Engineering and Technical Studies Fluid Mechanics for Mechanical Engineering TUTORIAL 4 – UNIT 3: Chapter 8: Viscous Flow in Pipes Assoc Prof Dr Shahrir Abdullah EBMF4103 Fluid Mechanics for Mechanical Engineering Jan 2005 2 Subject Matter Expert/Author: Assoc Prof Dr Shahrir Abdullah Faculty of Engineering and Technical Studies Copyright © ODL Jan 2005 Open University Malaysia SEQUENCE OF CHAPTER 8 Introduction Objectives 8.1 Flows Characteristics in Pipe 8.2 Fully Developed Laminar Flow 8.3 Fully Developed Turbulent Flow 8.4 Friction Loss 8.5 Minor Loss Summary 3 Subject Matter Expert/Author: Assoc Prof Dr Shahrir Abdullah Faculty of Engineering and Technical Studies Copyright © ODL Jan 2005 Open University Malaysia Introduction • Now, we cover fluid with internal viscous friction attributed by the viscosity properties and friction between the flows and any adjacent walls. • We will look into how to analyse the laminar and turbulent pipe flows, and to calculate friction losses due to pipe walls as well as pressure losses due to fitting components such as valves, junctions, faucets and flow measurement apparatus. 4 Subject Matter Expert/Author: Assoc Prof Dr Shahrir Abdullah Faculty of Engineering and Technical Studies Copyright © ODL Jan 2005 Open University Malaysia Objectives At the end of this chapter, you should be able to : understand and differentiate between laminar and turbulent pipe flows in terms of velocity profile and pressure distribution, use relevant formulae and charts to calculate friction and other minor losses in pipes, calculate flow-rate from pressure difference in obstacle based measurement apparatus. 5 Subject Matter Expert/Author: Assoc Prof Dr Shahrir Abdullah Faculty of Engineering and Technical Studies Copyright © ODL Jan 2005 Open University Malaysia 8.1 Flow Characteristics in Pipes • This type of flow is also known as internal flow where the pipe is assumed to be completely filled with the fluid. • The fluid motion is generated by pressure difference between two points and is constrained by the pipe walls. The direction of the flow is always from a point of high pressure to a point of low pressure. • If the fluid does not completely fill the pipe, such as in a concrete sewer, the existence of any gas phase generates an almost constant pressure along the flow path. • If the sewer is open to atmosphere, the flow is known as open- channel flow and is out of the scope of this chapter or in the whole course. • Hence this chapter only concentrates on internal pipe flows only. 6...
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This note was uploaded on 01/07/2011 for the course EBMF 4103 taught by Professor Shahrirabdullah during the Spring '05 term at Claremont McKenna College.

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EBMF4103 (Chapter 8) Fluid Mechanics for Mechanical Engineering

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