# fluid mechanics pressure measurement ppt

Unit 23 - Fluid Pressure 1. FIGURE 3–2 Two basic pressure gages. CHEMICAL ENGINEERING TECHNOLOGY: FLUID MECHANICS DURATIO N Week 1-2. Pressure Measurement Pressure is an important variable in fluid mechanics and many instruments have been devised for its measurement. CONTENTS vii 4 Fluids Statics 69 4.1 Introduction . Pressure Measurement 4. . Fluid mechanics itself is also divided into several categories. . Course. 2005 Pearson Education South Asia Pte Ltd. As the entry angle is decreased from 90°, the pressure drop decreases. The measurement of Pressure • The Barometer • Manometers • The Bourdon Gauge • Other types of Pressure Gauge Uniform Rectilinear Acceleration Pressure Variation in a variable density fluid and the Standard Atmosphere. For example, when a car drives up a mountain (atmospheric air pressure decreases), the (gauge) tire pressure goes up. Share. General Energy Equation 8. LAB REPORT EXPERIMENT # 1 PRESSURE MEASUREMENT PNGE 211: AN INTRODUCTION TO FLUID MECHANICS Made By: Nabeel Ahmed Khan Submitted To: Doruk Alp Date of Submission: 15/04/16 OBJECTIVE The purpose of this experiment is to demonstrate different pressure measurement methods. THEME Fluid properties (Learning Outcome 1) Definition of fluid Introductory dimensional analysis Measures of fluid mass and weight Ideal gas law Viscosity Compressibility of fluids Vapour pressure Surface tension Solving problems. We will further discuss various types of pressure devices which we use nowadays for measuring fluid pressure in pipes, open channel and also discuss the techniques of measuring atmospheric pressure and pressure … Thus, according to the law of fluid mechanics, inside that kind of space negative pressure appears without the changes of the fluid volume. . Forces Due to Static Fluid 5. Pressure is a normal stress, and hence has dimensions of force per unit area, or {ML-1 T-2}. For incompressible fluids and compressible fluids with M ≤ 0.3, Professional Publications, Inc. FERC Flow and Pressure Measurement . MAE 3130: Fluid Mechanics Lecture 1: Introduction … . 2019/2020. Let the level EF correspond to the surface of contact of the two liquids. Fluid mechanics is a discipline within the broad field of applied mechanics concerned with the behaviour of liquids and gases at rest or in motion. Results indicate that the cavity pressure drop prior to surface closure is an order of magnitude greater than previously assumed. . PRESSURE MEASUREMENT Pressure is an important variable in fluid mechanics and many instruments have been devised for its measurement. . . . . . If the pitot tube is to be used to measure the velocity of a liquid in a pipe, then we must adopt some method to know the static pressure head H. For instance, we may use a pitot tube and a vertical piezometer tube and measure the difference of the liquid levels in the two tubes. . The pressure of a fluid in a pipe may be measured by using a glass U-tube containing a heavier liquid which does not mix with the fluid in the pipe. 15 MEASUREMENT OF PRESSURE The pressure of a fluid may be measured by the following devices: MANOMETERS: The devices used for measuring the pressure at a point in a fluid by balancing the column of fluid by the same and other liquid. See Fig.7.73. . CN2122 / TCN2122E 3.0 Introduction Fluid Statics is a branch of mechanics of fluid which deals primarily with fluids at rest. Viscosity of Fluid 3. helpful 41 1. Buoyancy and Stability 6. . . . Comments . Chapter 14: Fluid mechanics Reading assignment: Chapter 14.5-14.7 Homework : (due Wednesday, Nov. 2, 2005): Problems: Q5, Q10, 1, 3, 7, 12, 20, Fluids flow. Academic year. Zain Chughtai. Flow of Fluid and Bernoullis Equation 7. Fluid Mechanics Overview Gas Liquids Statics Dynamics Air, He, Ar, N 2, etc. . Pressure measurement operations will be conducted by using U-tube and inclined tube manometers. FERC FERC. Pressure always acts inward normal to any surface (even imaginary surfaces as in a control volume). PPI FERC Fluid Mechanics FERC Fluid Mechanics. Remote sensing is often more convenient than putting a measuring device into a system, such as a person’s artery. . Fluids are a collection of randomly arranged molecules held together by by weak cohesive forces. . Selection of pressure gauges depends upon the location and type of fluid flow. Pascal’s Law • The intensity of pressure at any point in a fluid at rest, is same in all directions. pressure of a fluid stays constant, the gauge pressure of the same fluid will vary as atmospheric pressure changes. Pressure data obtained using underwater probes were correlated with high-speed motion pictures taken of the entries. Figure shows one of the many types of mechanical pressure gauges in use today. fluid mech. Flow measurement B. Fluid properties C. Fluid statics D. Energy, impulse, and momentum equations E. Pipe and other internal flow 7% of FE Morning Session Up to 15% of FE Afternoon Session Afternoon (Depends on Discipline) A. Bernoulli equation and mechanical energy balance B. Hydrostatic pressure In the English system of units, pressure is expressed as "psi" or lbf/in 2. University. 1.2.2 Fluid Mechanics Fluid mechanics is the application of the fundamental principles of mechanics and ther-modynamics – such as conservation of mass, conservation of energy and Newton’s laws of motion – to the study of liquids and gases, in order to explain observed phenomena and to be able to predict behaviour. The Nature of Fluid and the Study of Fluid Mechanics 2. Introduction to Pressure in Fluid Mechanics . • A fluid at rest obeys hydrostatic equilibrium - where its pressure increases with depth to balance its weight : = 0+ • Points at the same depth below the surface are all at the same pressure, regardless of the shape Fluid Mechanics key facts (2/5) . . View DMCF2223 - CHAPTER 2 Pressure and Head.ppt from BLHW 2342 at Technical University of Malaysia, Melaka. . . Thought Questions
Why is the electricity produced at the bottom of dams?
When you catch a deep-sea fish, why does its eyes pop-out?
Why do your ears pop on an airplane or up in the mountains?
. Fluid pressure at the top of the tube (P 1) is lower than the atmospheric pressure (P 2), and it's value corresponds with the hydrostatic fluid column inside the cylinder (, File S1). View Chapter 2 Pressure and Head Rev B.ppt from CHEMICAL E CHE413 at Universiti Teknologi Mara. . Research Consultant | PowerPoint PPT presentation | free to view Applied Fluid Mechanics 1. Pressure distribution for a fluid at rest A force balance in the z direction gives: For an infinitesimal element (Dz 0) Incompressible fluid Liquids are incompressible i.e. Fluid Mechanics Introduction Video Lecture From Properties of Fluid Chapter of Fluid Mechanics Subject For All Students. The undiminished transmission of pressure through a fluid allows precise remote sensing of pressures. The local atmospheric pressure is 15 psia. . Please sign in or register to post comments. Dresser Instruments, Dresser, Inc. Used by permission. Let X be the centre of the pipe. . Research Consultant | PowerPoint PPT presentation | free to view . Fluid Mechanics (EGM2204) Uploaded by. Water, Oils, Alcohols, etc. In case of fluid mechanics, we use some specific pressure gauges for measurement of pressure. Suppose the pipe contains water, and mercury is used as the measuring liquid. . Fluid Mechanics and Energy Transport BIEN 301 Lecture 4 Pressure Distribution, Hydrostatic Forces, and Pressure Measurement - Fluid Mechanics and Energy Transport BIEN 301 Lecture 4 Pressure Distribution, Hydrostatic Forces, and Pressure Measurement Juan M. Lopez, E.I.T. . Fluid Mechanics 9-10a Fluid Measurements Pitot Tube – measures flow velocity • The static pressure of the fluid at the depth of the pitot tube (p0) must be known. . . Forces in Fluids
Chapter 23