Foamed emulsion drainage: flow and trapping of drops [PDF]
, 2017 Foamed emulsions are ubiquitous in our daily life but the ageing of such systems is still poorly understood. In this study we investigate foam drainage and measure the evolution of the gas, liquid and oil volume fractions inside the foam.
Langevin, Dominique +3 more
core +2 more sources
Modeling impacts of farming management alternatives on CO2, CH4, and N2O emissions: A case study for water management of rice agriculture of China [PDF]
, 2005 Since the early 1980s, water management of rice paddies in China has changed substantially, with midseason drainage gradually replacing continuous flooding.
Boles, Stephen +8 more
core +2 more sources
Bubble kinetics in a steady-state column of aqueous foam [PDF]
, 2006 We measure the liquid content, the bubble speeds, and the distribution of bubble sizes, in a vertical column of aqueous foam maintained in steady-state by continuous bubbling of gas into a surfactant solution.
D. J Durian +9 more
core +3 more sources
Study on Gas Control Methods Optimization for Mining Safety
Advances in Civil Engineering, 2021 Effective gas control is of significance for safe efficient coal mining in Haizi Coal Mine and other mines with similar geological conditions. This study concentrates on gas control theories and techniques in multiple coal seams of Haizi Coal Mine (No. 7,
Liwen He +5 more
doaj +1 more source
Gas injection in a liquid saturated porous medium. Influence of pressurization effects and liquid films [PDF]
, 2012 We study numerically and experimentally the displacement of a liquid by a gas in a two-dimensional model porous medium. In contrast with previous pore-network studies on drainage in porous media, the gas compressibility is fully taken account.
A. Vedvik +29 more
core +2 more sources
CFX-based numerical simulation of pipeline leakage of coal mine main gas drainage system
矿业科学学报, 2021 To understand the pipeline leakage characteristics of the large-scale main gas drainage system in coal mines and the multi-physical fields of the gas flow in pipeline, a three-dimensional numerical model is developed based on Ansys CFX and the process of
Cai Jitao +4 more
doaj +1 more source
Design of gas drainage monitoring system based on S7-1500R redundancy technology
Meikuang Anquan, 2022 For the problems that the PLC controller failure in the gas drainage monitoring system makes the monitoring system unable to monitor and control the gas drainage system, a gas drainage monitoring system based on S7-1500R redundant PLC is designed ...
WANG Zuxun, CHENG Yulong
doaj +1 more source
Flow coupling during three-phase gravity drainage [PDF]
, 2011 We measure the three-phase oil relative permeability k(ro) by conducting unsteady-state drainage experiments in a 0.8 m water-wet sand pack. We find that when starting from capillary-trapped oil, k(ro) shows a strong dependence on both the flow of water ...
Aminzadeh, B. +3 more
core +1 more source
Gas seepage law and drainage borehole layout considering coal body creep
Gong-kuang zidonghua, 2019 In order to research influence of deep coal body creep on gas seepage, mathematical models of multi-field coupling including coal body deformation field, gas diffusion field and gas seepage field were established considering creep action.
SONG Hongli, ZHAO Yang, LI Qingzhao
doaj +1 more source
Research progress on coal mine laser methane sensor [PDF]
, 2019 This paper discusses the research progress of low-power technology of laser methane sensors for coal mine. On the basis of environment of coal mines, such as ultra-long-distance transmission and high stability, a series of studies have been carried out ...
Grattan, K. T. V. +10 more
core +1 more source