Lecture_Note_Ch_1

Lecture_Note_Ch_1 - ME 342 Fluid Mechanics Lecture Note on...

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ME 342 Fluid Mechanics Lecture Note on Ch. 1 troduction Introduction Prof. Chang-Hwan Choi Stevens Institute of Technology Department of Mechanical Engineering Spring 2008
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Course Syllabus • Instructor: Prof. Chang-Hwan Choi • Office: 204 Carnegie Lab • Phone: x5579 mail: [email protected] edu Email: [email protected] • Lecture Hour & Room on 11:00 am 2:15 pm, Edwin A. Stevens Hall 308 Mon 11:00 am 12:15 pm, Edwin A. Stevens Hall 308 – Thu 9:00-10:15 am, Edwin A. Stevens Hall 308 • Office Hour: Thu (10:30 am – 12 noon) and (1:30 pm – 3:00 pm) • TA: Ertan Serince ([email protected]) – Office hour: TBA
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Course Syllabus (Cont.) • Textbook – Fluid Mechanics, Frank M. White, McGraw-Hill, 6 th Edition, 2008 • Course Registration – http://www.aris.mhhe.com – Student Section Code: 7A8-F6-83F • Grading omework : 20% – Homework : 20% – Midterm exam: 30% – Final exam: 30% – Lab attendance & report: 20%
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Preliminary Remarks • Fluid Mechanics – Study of fluids either in motion (fluid dynamics ) or at rest (fluid statics ). • Both gases and liquids are classified s fluids. as fluids. • Numerous fluid engineering applications • Theory, experiment, and computation (computational fluid dynamics, CFD) • Two chief obstacles to a workable theory: geometry and viscosity Hurricane Rita in the Gulf of Mexico, Sept. 22, 2005. • Turbulence: disorderly, random phenomenon
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History and Scope of Fluid Mechanics Archimedes (285-212 B.C.): the law of buoyancy Leonardo da Vinci (1452-1519): the equation of conservation of mass Edme Mariotte (1620-1684): the first wind tunnel test Isaac Newton (1642-1727): the law of viscosity Æ Newtonian fluids Euler (1707-1783): Bernoulli equation (frictionless-flow problems) Lord Rayleigh (1842-1919): dimensional analysis sborne Reynolds (1842 912): Reynolds number Osborne Reynolds (1842-1912): Reynolds number Navier (1785-1836) and Stokes (1819-1903): Navier-Stokes equations Ludwig Prandtl (1875-1953): boundary layer g( )y y Theodore von Karman (1881-1963) and Sir Geoffrey I. Taylor (1886- 1975): laid the twentieth-century foundations for the present state of art fluid mechanics. in fluid mechanics.
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Problem-Solving Techniques Solving a large number of problems is a key to learning the fluid mechanics. One must deal with equations, data, tables, assumptions, unit systems, and solution schemes. ead the problem and restate it with your summary of the results 1. Read the problem and restate it with your summary of the results desired. 2. From tables or charts, gather the needed property data: density, iscosity etc viscosity, etc. 3. Make sure you understand what is asked . 4. Make a detailed, labeled sketch of the system or control volume needed. 5. Think carefully and list your assumptions . ind an algebraic solution if possible 6. Find an algebraic solution if possible. 7. Report your solution, labeled, with the proper units and the proper number of significant figures that the data uncertainty allows.
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The Concept of a Fluid From the point of view of fluid mechanics, all matter consists of only two states, fluid and solid .
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Lecture_Note_Ch_1 - ME 342 Fluid Mechanics Lecture Note on...

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