Results 231 to 240 of about 5,504,954 (280)

The analysis of slug tests in the frequency domain

Water Resources Research, 1989
In this paper a generalized analytical frequency domain method for the evaluation of transmissivity tests is presented. For a confined homogeneous aquifer the Kelvin functions represent a satisfactory set of solutions for the equation of radial flow in the frequency domain.
Paul Marschall, Baldur Barczewski
openaire   +1 more source

Prediction of Slug Frequency for Medium Liquid Viscosity Two-Phase Flow in Vertical, Horizontal, and Inclined Pipes

, 2020
Several experimental studies have been conducted to investigate the effect of liquid viscosity on slug frequency in horizontal, vertical, and inclined two-phase flows.
G. Abdul-Majeed, Mahshid Firouzi, G. Soto‐Cortes   +2 more
semanticscholar   +1 more source

A New Approach to the Prediction of Slug Frequency

Proceedings of SPE Annual Technical Conference and Exhibition, 1990
ABSTRACT The design of crude oil production systems involving the pipelining of unseparated reservoir fluids requires a detailed understanding of multiphase flow phenomena. Slug flow in particular may cause undesirable process upsets if the separation and processing facilities are not designed to handle the resultant gas and liquid ...
T. J. Hill, D. G. Wood
openaire   +1 more source

Neural Network Model To Predict Slug Frequency of Low-Viscosity Two-Phase Flow

, 2020
In this work, the artificial neural network (ANN) is implemented for prediction slug frequency FS for low viscosity μL flow (μL ≤ 1.6 mPa·s) in vertical, horizontal, and inclined pipes.
G. Abdul-Majeed, Yousif Al-Dunainawi, G. Soto‐Cortes, J. A. Al-Sudani   +3 more
semanticscholar   +1 more source

Analysis of Slug Frequency Correlations for Two-Phase Gas-Liquid Horizontal Slug Flow

Volume 2, Fora: Cavitation and Multiphase Flow; Fluid Measurements and Instrumentation; Microfluidics; Multiphase Flows: Work in Progress; Fluid-Particle Interactions in Turbulence, 2014
Multiphase flows in pipelines show several flow patterns depending on the industrial applications where they appear. In oil and gas production, typical flow rates, geometries and the physical properties of the phases make slug flow to be the most common of all patterns.
Manoella M. Antunes, Cristiane Cozin, Fausto A. A. Barbuto, Rigoberto E. M. Morales, Hendy T. Rodrigues   +4 more
openaire   +1 more source

Prediction of Slug Frequency for Gas-Liquid Flows

SPE Annual Technical Conference and Exhibition, 1999
Abstract During slug flow, knowledge of the slug frequency is essential for the gas -liquid receiving facility design as well as for predicting various slug flow characteristics such as slug length and pressure drop. Various methods proposed in the literature for predicting the slugging frequency in horizontal and inclined
openaire   +1 more source

Correlation of liquid slug velocity and frequency in horizontal cocurrent gas‐liquid slug flow

AIChE Journal, 1969
AbstractNo Abstracts.
G. A. Gregory, D. S. Scott
openaire   +1 more source

Prediction of Slug Frequency for High Viscosity Oils in Horizontal Pipes

SPE Annual Technical Conference and Exhibition, 2009
Abstract Slug frequency is defined as the number of slugs passing at a specific point along a pipeline over a certain period of time. Most experimental studies related to slug frequency in the literature were conducted using air and water. Data with a viscous liquid phase are scarce.
B. Gokcal, A.S. Al-Sarkhi, C. Sarica, E.M. Al-Safran   +3 more
openaire   +1 more source

Frequency-Dependent Grazing by Slugs and Grasshoppers

The Journal of Ecology, 1985
(1) Frequency-dependent grazing was investigated in the slug, Deroceras reticulatum, feeding on mixtures of Dactylis glomerata and Trofolium repens, and in the grasshopper, Omocestus viridulus, feeding on five grass species in paired combinations. (2) Deroceras reticulatum grazed disproportionately on the rarer species and showed a marked preference ...
openaire   +1 more source

Low-frequency noise impairs righting reflex behavior by disrupting central nervous system in the sea slug Onchidium reevesii.

Science of the Total Environment
Anthropogenic noise has significantly increased due to human activities, posing a threat to the health and survival of marine organisms. However, current studies have often emphasized its effects on the physiological aspects of marine organisms, while ...
Zhihan Tu, Liusiqiao Tang, F. Khan, Menghong Hu, Heding Shen, Youji Wang   +5 more
semanticscholar   +1 more source