. . Pressure always acts inward normal to any surface (even imaginary surfaces as in a control volume). The undiminished transmission of pressure through a fluid allows precise remote sensing of pressures. • 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) . Water, Oils, Alcohols, etc. ii. Dresser Instruments, Dresser, Inc. Used by permission. Zain Chughtai. Let the level EF correspond to the surface of contact of the two liquids. The local atmospheric pressure is 15 psia. Pressure is a normal stress, and hence has dimensions of force per unit area, or {ML-1 T-2}. fluid power technology btm2234 chapter 2: fluids pressure and its measurement After completing this chapter, you should be able to; Define the relationship between absolute pressure, gauge pressure and atmospheric pressure Define the relationship between a change in elevation and the change in pressure in a fluid Pressure Measurement 4. Related documents. Suppose the pipe contains water, and mercury is used as the measuring liquid. Pressure data obtained using underwater probes were correlated with high-speed motion pictures taken of the entries. . 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. Buoyancy and Stability 6. . 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 DMCF2223 - CHAPTER 2 Pressure and Head.ppt from BLHW 2342 at Technical University of Malaysia, Melaka. Measurement in Fluid Mechanics also features extensive background materials in system response, measurement uncertainty, signal analysis, optics, ﬂuid mechan- ical apparatus, and laboratory practices, which shield the reader from having to Please sign in or register to post comments. Comments . 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. . Academic year. Forces in Fluids
Chapter 23
2. Remote sensing is often more convenient than putting a measuring device into a system, such as a person’s artery. Pressure Measurement Pressure is an important variable in fluid mechanics and many instruments have been devised for its measurement. 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. Share. 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. . General Energy Equation 8. Many devices are based on hydrostatics such as barometers and manometers, i.e., determine pressure through measurement of a column (or columns) of a liquid using the pressure variation with elevation equation for an incompressible fluid. As the entry angle is decreased from 90°, the pressure drop decreases. … . MAE 3130: Fluid Mechanics Lecture 1: Introduction … that branch of science is called fluid dynamics. Flow of Fluid and Bernoullis Equation 7. View Chapter 2 Pressure and Head Rev B.ppt from CHEMICAL E CHE413 at Universiti Teknologi Mara. INTI International University. 2005 Pearson Education South Asia Pte Ltd. CHEMICAL ENGINEERING TECHNOLOGY: FLUID MECHANICS DURATIO N Week 1-2. University. Unit 23 - Fluid Pressure 1. . . Figure shows one of the many types of mechanical pressure gauges in use today. PRESSURE MEASUREMENT Pressure is an important variable in fluid mechanics and many instruments have been devised for its measurement. ¦ Fi 0 Viscous/Inviscid Steady/Unsteady Compressible/ Incompressible ¦ Fi! Definition The study of f1uids in motion, where pressure forces are not considered, is called fluid kinematics and if the pressure forces are also considered for the fluids in motion. Viscosity of Fluid 3. Pressure measurement operations will be conducted by using U-tube and inclined tube manometers. See Fig.7.73. FERC FERC. 57:020 Fluid Mechanics Chapter 2 Professor Fred Stern Fall 2013 6 0 y p dy)dxdz 0 y p pdxdz (p F y 0 ... Pressure Measurements Pressure is an important variable in fluid mechanics and many instruments have been devised for its measurement. . . Thus, according to the law of fluid mechanics, inside that kind of space negative pressure appears without the changes of the fluid volume. . Fluid Mechanics Overview Gas Liquids Statics Dynamics Air, He, Ar, N 2, etc. Introduction to Pressure in Fluid Mechanics . . FERC FERC. FLUID MECHANICS (CHE 213) CHAPTER 2 PRESSURE AND HEAD 1 … Thought Questions
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