The Problem of Pneumatic Pressure Lag: Part 1—Steady-State Flow in a Tubing SystemSource: Journal of Fluids Engineering:;1964:;volume( 086 ):;issue: 002::page 234DOI: 10.1115/1.3653045Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An analytical and experimental investigation of the steady-state isothermal flow in a series system, comprised of a constant-diameter tube with reduced size unions located at the tube extremities, is reported herein. The pressure drop across the system has been determined experimentally as a function of the system geometry. The parameters chosen for investigation were the tube length to diameter ratio L/D, the union diameter to tube diameter ratio Df /D, and the Reynolds number. The ranges of the parameters investigated consisted of 159 ≤ L/D ≤ 1475, 0.7 ≤ Df /D ≤ 1.0, and 200 ≤ Reynolds number ≤ 100,000. All tests were conducted at room temperature. The theory is derived considering each geometric element of the system, such as inlet, development length, exit, and so on, and a set of five simultaneous algebraic flow equations results. Solutions to these were obtained by use of a digital computer. A pseudo-friction factor, for fully developed laminar or turbulent flow, is defined. The result indicates that the correlation of theory with experiment is quantitative over the range of parameters investigated.
keyword(s): Pressure , Flow (Dynamics) , Tubing , Steady state , Reynolds number , Computers , Equations , Geometry , Pressure drop , Friction , Temperature AND Turbulence ,
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contributor author | A. L. Ducoffe | |
contributor author | F. M. White | |
date accessioned | 2017-05-08T23:23:01Z | |
date available | 2017-05-08T23:23:01Z | |
date copyright | June, 1964 | |
date issued | 1964 | |
identifier issn | 0098-2202 | |
identifier other | JFEGA4-27254#234_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/101435 | |
description abstract | An analytical and experimental investigation of the steady-state isothermal flow in a series system, comprised of a constant-diameter tube with reduced size unions located at the tube extremities, is reported herein. The pressure drop across the system has been determined experimentally as a function of the system geometry. The parameters chosen for investigation were the tube length to diameter ratio L/D, the union diameter to tube diameter ratio Df /D, and the Reynolds number. The ranges of the parameters investigated consisted of 159 ≤ L/D ≤ 1475, 0.7 ≤ Df /D ≤ 1.0, and 200 ≤ Reynolds number ≤ 100,000. All tests were conducted at room temperature. The theory is derived considering each geometric element of the system, such as inlet, development length, exit, and so on, and a set of five simultaneous algebraic flow equations results. Solutions to these were obtained by use of a digital computer. A pseudo-friction factor, for fully developed laminar or turbulent flow, is defined. The result indicates that the correlation of theory with experiment is quantitative over the range of parameters investigated. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | The Problem of Pneumatic Pressure Lag: Part 1—Steady-State Flow in a Tubing System | |
type | Journal Paper | |
journal volume | 86 | |
journal issue | 2 | |
journal title | Journal of Fluids Engineering | |
identifier doi | 10.1115/1.3653045 | |
journal fristpage | 234 | |
journal lastpage | 240 | |
identifier eissn | 1528-901X | |
keywords | Pressure | |
keywords | Flow (Dynamics) | |
keywords | Tubing | |
keywords | Steady state | |
keywords | Reynolds number | |
keywords | Computers | |
keywords | Equations | |
keywords | Geometry | |
keywords | Pressure drop | |
keywords | Friction | |
keywords | Temperature AND Turbulence | |
tree | Journal of Fluids Engineering:;1964:;volume( 086 ):;issue: 002 | |
contenttype | Fulltext |