T1 - Experimental investigation of laminar turbulent intermittency in pipe flow. AU - Samanta, Devranjan. AU - De Lozar, Alberto. AU - Hof, Björn. PY - 2011/8/25. Y1 - 2011/8/25. N2 - In shear flows, turbulence first occurs in the form of localized structures (puffs/spots) surrounded by laminar fluid. We here investigate such spatially Laminair turbulent transition in pipe flow for Newtonian Draad, AA, Kuiken, GDC & Nieuwstadt, FTM 1998, ' Laminair turbulent transition in pipe flow for Newtonian and non-Newtonian fluids ', Journal of Fluid Mechanics, no. 377, pp. 267-312.
Laminar-to-turbulent transition of pipe flows occurs, for sufficiently high Reynolds numbers, in the form of slugs. These are initiated by disturbances in the entrance region of a pipe flow, and grow in length in the axial direction as they move downstream. Nonlinear dynamics of cantilevered pipes conveying fluid Oct 01, 2017 · 1. Introduction. The understanding of the dynamics of pipes conveying fluid is of considerable interest in many engineering fields. It has application to the design of oil pipelines , , pump discharge lines , reactor system components , microfluidic devices , , , , and so on.The stability, vibration characteristics, and nonlinear vibrations are some of the key issues of the dynamical behaviors On transition in a pipe. Part 1. The origin of puffs and Conditionally sampled hot-wire measurements were taken in a pipe at Reynolds numbers corresponding to the onset of turbulence. The pipe was smooth and carefully aligned so that turbulent slugs appeared naturally at Re > 5 × 10 4 4
TY - JOUR. T1 - PIPEWHIP RESTRAINT SYSTEMS. AU - Reid, S. R. AU - Johnson, W. AU - Reddy, T. Yella. PY - 1980/1/1. Y1 - 1980/1/1. N2 - The phenomenon of pipe-whip is an interesting interaction between aspects of fluid mechanics, fracture mechanics and dynamic structural mechanics, any one of which constitutes a difficult problem in its own right. Pipes & flow rate UK Aquatic Plant SocietyJun 05, 2011 · So a 3/4 inch pipe (18mm id) carries approx 1.6 times more flow than a 1/2 inch pipe (13mm id) and approx 0.7 times less than a 1 inch pipe (24mm id). Don't forget the pipe sizes are imperial (I've used pressure pipe for the ids) but they're close enough to Pulsating flow in a pipe University of ArizonaAbstract. Turbulent and laminar pulsating flows in a straight smooth pipe are compared at identical frequencies and Reynolds numbers. Most measurements were made at a mean Reynolds number of 4000, but the influence of Re was checked for 2900 < Re < 7500. The period of forcing ranged from 0.5 to 5 s, with corresponding change in the non
title = "Turbulent pipe flow downstream of a 90° bend", abstract = "Time-resolved stereoscopic PIV was used to investigate the curvature-induced structures downstream of a 90° bend at Reynolds numbers between 20× 103 and 115× 103. Data were taken at three downstream locations to investigate the evolution of the structures. water conservancy project:Topics by Science.govJun 01, 2018 · 2015-05-01. The Dujiangyan Water-Conservancy Project is a great water irrigation works in Chinese cultural history, which led the Min River water to the vast Chengdu Plain, and created fertile and pretty "land of abundance". Now Chengdu is facing increased water demand stress due mainly to rapid urbanization.Scraping - Pipelines, Piping and Fluid Mechanics Nov 18, 2005 · BJ Services is a pipeline services company. You might want to check out their web page for all the services they can provide. zdas04 is referring to a pipeline cleaning method after hydrostatic testing where a gel is run through the pipeline between pigs in order to dry the pipeline and to pick up any debris left after fabrication. Very effective.