HC Chen 1/13/2019 CVEN Fluid Dynamics. CVEN 311 Fluid Dynamics

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1 CVEN Fluid Dynamics CVEN 311 Fluid Dynamics Catalog Data: Fluid properties; statics; kinematics; basic conservation principles of continuity, energy and momentum; similitude and hydraulic models; incompressible flow in pipes; fluid dynamic drag. Prerequisites: MATH 251 and CVEN 221; CVEN 302 or registration therein Textbook: Munson, Young and Okiishi s Fundamentals of Fluid Mechanics, 8 th Edition, by P.R. Gerhart, A.L. Gerhart and J.I. Hochstein, Wiley, 2018 CVEN 311 Fluid Mechanics 1

2 INSTRUCTOR: OFFICE: Course Information OFFICE HOURS: Dr. H.C. Chen DLEB 304C PHONE: MF 1:30-3:00 pm or other times by appointment Teaching Assistant Teaching Assistant: TBA OFFICE: Office Hours: Phone: CVEN 311 Fluid Mechanics 2

3 Grading Policy Homework and Quizzes 15% Examination I 20% Examination II 20% Examination III 20% Final Exam 25% Homework Assignments HomeworkwillbeassignedonFridaysandwillbedue on the following Friday at the beginning of class. No late homework will be accepted. Homework is graded by the TA, and not all homework may be graded. For a valid university excuse, exceptions are granted only if you notify your instructor in advance (except in thecaseofavalidemergencyoreventthatcannotbe planned beforehand). Please do not ask for other exceptions. CVEN 311 Fluid Mechanics 3

4 Quizzes Closed-book quizzes will be given most Fridays during class. This quiz will consist of a single problem which is very similar, if not identical, to the homework turned in that day. The quizzes will be graded by the TA. The lowest quiz score will be dropped. This will allow you to miss one quiz for unforeseen circumstances. Any further missed quizzes will result in a grade of zero for each one missed unless accompanied by a University excuse. Exams Three in-class exams and a two-hour final exam are scheduled. Unexcused absences will result in a grade of zero for missed examinations. All exams are closed book. You are allowed to bring in one single-sided letter size paper with your own notes and formulas. You may not include examples, problems or solutions on the formula sheet. This sheet will be turned in with your exam. You should also bring a calculator, sufficient paper and writing implements to the exams. No other resources are permitted in the exam. CVEN 311 Fluid Mechanics 4

5 Password for Protected Links The homework solutions, sample exams and exam solutions (password protected) will be posted on the course website The password is the same for all protected link on the course web page Please me if you are a student in this class and require a password Course Outline (Subject to Change) WEEK MTG DATE TOPICS READING /14 Introduction, Dimensions, Units /16 Fluid properties, Ideal Gas Law /18 Viscosity, Compressibility, Surface Tension /21 Martin Luther King, Jr. Day 4 01/23 Fluid Statics /25 Pressure Field, Standard Atmosphere /28 Gages, Manometers /30 Force on Plane Surface /01 Force on Curved Surfaces, Buoyancy /04 Buoyancy, Stability /06 Newton s Second Law /08 Bernoulli Equation /11 Pressure Variation Normal to Streamline /13 Static, Stagnation and Dynamic Pressures /15 Applications of Bernoulli Equation /18 Energy Line, Hydraulic Grade Line /20 Fluid Kinematics, Velocity Field /22 Acceleration Field, Control Volume and System /25 Examination I 19 02/27 Reynolds Transport Theorem /01 Conservation of Mass /04 Principle of Linear Momentum /06 Applications of Linear Momentum /08 Moment-of-Momentum 5.2 CVEN 311 Fluid Mechanics 5

6 Course Outline - Continued WEEK MTG DATE TOPICS READING /18 Applications of Moment-of-Momentum /20 Energy Equation /22 Applications of Energy Equation /25 Examination II 28 03/27 Applications of Energy and Bernoulli Equations /29 Dimensional Analysis /01 Modeling and Similitude /03 Practical Model Studies /05 Pipe Flow Characteristics /08 Laminar Pipe Flow /10 Turbulent Pipe Flow /12 Friction Factor, Moody Diagram /15 Pipe Flow Examples /17 Examination III 04/19 Reading Day (Good Friday) /22 External Flow, Lift and Drag /24 Laminar Boundary Layer /26 Turbulent Boundary Layer /29 Friction and Pressure Drag /30 Drag Coefficient and Lift /06 Final Examination (8:30-10:00 am) Topics Fluid Properties Fluid Statics Bernoulli Equation Control volume analysis and fluid kinematics Conservation of mass Linear and angular momentum Conservation of energy Modeling and Similitude Pipe flows Boundary layers and Turbulence Drag and lift forces CVEN 311 Fluid Mechanics 6

7 Fluid Mechanics 1. Fluid Transport Movement of fluid from one place to another so that the fluid may be used or processed Home and city water supply systems Cross-country oil, natural gas pipelines Power plants, chemical plants, pump 2. Energy Transport Energy conversion devices Steam turbines, gas turbines, engines Hydroelectric plants, windmills, Fans Very little energy is generated without fluid motion Fluid Mechanics 3. Environmental Control Building heating / air-conditioning system Combustion, exhaust gas Atmosphere, lakes, oceans, rivers, ground water, 4. Transportation Airplanes, ships, automobiles, space shuttles Aerodynamic / hydrodynamic lift and drag Jet engine, ship propeller, submarine propulsor, CVEN 311 Fluid Mechanics 7

8 Fluid Mechanics How can airplane fly? How to prevent aircraft from stalling? How can ship float? How to reduce wave drag and friction drag? How to prevent ship from capsizing? How to maneuver submarines and remoteoperated vehicles? How to throw a curve ball? Fluid Mechanics Common Fluids The air we breath The water transport through pipes The blood in our veins Crude Oil, gasoline, lubrication oil Refrigerant Paint, honey, quicksand (water-sand mixture), etc. CVEN 311 Fluid Mechanics 8

(radiator) Refrigerant (air conditioning) Water (washer fluid) Engineering Applications Civil Engineering Rivers, lakes, oceans, ground water, Wind, wave,

9 What fluids are needed to run your car? Gasoline (fuel) Air (air/fuel mixture, heating) Compressed air (tire pressure) Engine oil Lubrication oil Transmission fluid Power steeling fluid Coolant (radiator) Refrigerant (air conditioning) Water (washer fluid) Engineering Applications Civil Engineering Rivers, lakes, oceans, ground water, Wind, wave, current, atmosphere, rain, storm, hurricane, Buildings, bridges, dams, soil, sand, Ocean Engineering & Naval Architecture Offshore and coastal structures, harbors, ports, Ships, submarines, remote-operated vehicles, Drilling, offshore mining, dredging, scour, CVEN 311 Fluid Mechanics 9

10 Engineering Applications Mechanical Engineering Turbines, compressors, engines, pumps, Power plants, automobiles, heat exchangers, Combustion, fluid flow, heat transfer, Aerospace Engineering Aircrafts, helicopters, rockets, missiles, space shuttles, hot air balloons, Petroleum Engineering Inland/offshore oil drilling, oil transport, Engineering Applications Environmental Engineering Ground water, rivers, lakes, pollutant transport, toxic waste cleanup, Meteorology / Oceanography Storms, hurricanes, tornados, jet streams, Ocean waves, currents, circulation, tidal waves, Biomechanics Blood flow, heart valve, artificial heart, Traffic flow, swimming, surfing, baseball, golf ball, CVEN 311 Fluid Mechanics 10