Download or read book An investigation of turbulent flow through a porous wall pipe written by Elliott Winston Brogren and published by . This book was released on 1960 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An investigation of turbulent flow in porous pipes and channels written by Sami Faiz Masri and published by . This book was released on 1961 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulent Pipe Flow with Rough and Porous Walls written by Roberto J. Muñoz Goma and published by . This book was released on 1968 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulent Flow in a Porous Tube with Wall Suction written by Manouchehr Heidarpour and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the effects of suction (i.e. lateral flow through the walls) on the structure of a fully developed turbulent pipe flow. Also the effect of suction on pressure gradient and pressure change is examined experimentally. The frictional characteristics of Irrigro$\sp{\circler,}$ the porous tubing used in this investigation, is studied by means of a comprehensive experimental program that considered different lengths of porous tubing. Three aspects of flow in porous pipes are investigated in this study, (i) a computational study of the effects of suction on the flow characteristics, (ii) an experimental study of the frictional characteristics of the porous tubing with no suction condition and (iii) an experimental study of pressure change along a porous tubing with lateral flow. The numerical study of turbulent pipe flow with wall suction rates ranging from A = 0 to 13 percent showed that in fully developed pipe flow, wall suction results in a more uniform velocity distribution with increased near-wall velocity values and reduced velocities near the centerline. The near-wall component of radial velocity, $\nu,$ increases with increasing distance from the wall in the zone near the pipe wall. The absolute levels of turbulent kinetic energy decrease with increasing suction rate. Wall suction increases the wall shear stress, $\tau\sb{\rm w},$ along the wall of the tube. The increase in $\tau\sb{\rm w}$ is significant even for the smallest suction rate (up to 30 percent) while such an increase is much higher for A = 13 percent (up to 360 percent). Analysis of the experimental friction loss data obtained for small diameter porous tubing in this study confirmed that the Colebrook and White (C-W) equation is a very accurate predictor of the friction factor for porous tubing with small diameter size and Reynolds numbers less than 100,000. These results are in agreement with the results of Aggarwal et al (1972). The value of the relative roughness obtained in this study showed that the porous tubing under study is smoother than most of the tubing used as laterals in the traditional trickle irrigation. Also, the fact that the friction factors agreed with the Colebrook-White law indicates that the physical roughness in the porous tubing under study corresponds very nearly to the equivalent sand roughness with a relative roughness of about e/D = 0.002. A relationship was established as a convenient and accurate head loss prediction equation (within 5% error) by combining a power function with the Darcy-Weisbach equation. The combination equation is correctable for viscosity changes and accurate for the porous pipe tubing under study. A pressure change and a pressure gradient prediction relationship were established in the transition zone of the Moody diagram for high suction rates, assuming a uniform radial flow rate along the suction region. The relationships presented herein are based on a control volume approach analysis and incorporated the data obtained from laboratory studies on the porous tubing under study.
Download or read book Turbulent Flows and Heat Transfer written by Chia-Ch'iao Lin and published by Princeton University Press. This book was released on 2015-12-08 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume V of the High Speed Aerodynamics and Jet Propulsion series. Topics include transition from laminar to turbulent flow; turbulent flow; statistical theories of turbulence; conduction of heat; convective heat transfer and friction in flow of liquids; convective heat transfer in gases; cooling by protective fluid films; physical basis of thermal radiation; and engineering calculations of radiant heat exchange. Originally published in 1959. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Download or read book Report written by United States. National Bureau of Standards and published by . This book was released on 1968 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Applied Mechanics written by and published by . This book was released on 1974 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes original research in all branches of mechanics including aerodynamics; aeroelasticity; boundary layers; computational mechanics; constitutive modeling of materials; dynamics; elasticity; flow and fracture; heat transfer; hydraulics; impact; internal flow; mechanical properties of materials; micromechanics; plasticity; stress analysis; structures; thermodynamics; turbulence; vibration; and wave propagation.
Download or read book U S Government Research Reports written by and published by . This book was released on 1957 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1959 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Turbulent Flow in Rough Pipes written by James Mueller Robertson and published by . This book was released on 1965 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The considerable literature on turbulent flow past rough surfaces is correlated in terms of modes of presenting the smooth-to-rough transition and the influences of roughness density and shape. Flow measurements in a 3 in. smooth and sand roughened pipe and in an 8 in. steel pipe with 'natural' roughness are reported. The temporal-mean velocity and friction measurements show transitional (between smooth and fully rough behavior) variations. The pipe factor variation is also elucidated; the sand-roughened pipe studies indicate a shift in Nikuradse's presentation. The turbulence - as intensity divided by shear velocity and macroscale in ratio to pipe radius - in rough pipe flow appears the same in rough as in smooth pipe flow. The relative turbulence intensity is constant, or at most decreases slowly with increase in flow Reynolds number. (Author).
Download or read book NBS Special Publication written by and published by . This book was released on 1973 with total page 1562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AFOSR written by United States. Air Force. Office of Scientific Research and published by . This book was released on 1950 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Velocity and Pressure Distributions in Turbulent Pipe Flow with Uniform Wall Suction written by Harold L. Weissberg and published by . This book was released on 1955 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Hydraulic Laboratory Research in the United States written by and published by . This book was released on 1970 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development Progress Report written by United States. Office of Saline Water and published by . This book was released on 1965 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
