Boiling two-phase pressure drop in small diameter tubes [PDF]
, 2007 An experimental study of two-phase pressure drop in small diameter tubes is described in this paper. Stainless steel tubes of internal diameter and length of 4.26 mm, 500 mm and 2.01 mm, 211 mm were used. The working fluid was R134a and the range covered
Huo, X +4 more
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One-dimensional mechanistic model for flow boiling pressure drop in small- to micro- passages [PDF]
, 2009 This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the ...
2nd Micro and Nano Flows Conference (MNF2009) +4 more
core +6 more sources
Effects of hydrophobicity on splash erosion of model soil particles by a single water drop impact [PDF]
, 2013 Raindrop impact can be a major contributor to particle mobilization for soils and other granular materials. In previous work, water repellent soils, comprised of hydrophobic particles, have been shown to exhibit greater splash erosion losses under ...
Stefan Doerr +16 more
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Transitions of water-drop impact behaviour on hydrophobic and hydrophilic particles [PDF]
, 2013 Extreme soil water repellency can have substantial implications for soil hydrology, plant growth and erosion, including enhanced splash erosion caused by raindrop impact.
Atherton, Shaun +8 more
core +1 more source
Effect of Particle Size on Droplet Infiltration into Hydrophobic Porous Media As a Model of Water Repellent Soil [PDF]
, 2011 The wettability of soil is of great importance for plants and soil biota, and in determining the risk for preferential flow, surface runoff, flooding,and soil erosion. The molarity of ethanol droplet (MED) test is widely used for quantifying the severity
Stefan Doerr +15 more
core +1 more source
Water-repellent soil and its relationship to granularity, surface roughness and hydrophobicity: a materials science view [PDF]
, 2005 Considerable soil water repellency has been observed at a wide range of locations worldwide. The soil exhibiting water repellency is found within the upper part of the soil profile.
Newton, Michael +2 more
core +1 more source
Small-scale contact angle mapping on undisturbed soil surfaces
Journal of Hydrology and Hydromechanics, 2013 Research of the last years pointed out that most soils are neither completely hydrophilic nor hydrophobic, but exhibit a subcritical level of water repellency (i.e. contact angle, CA > 0° and < 90°).
Bachmann Joerg +2 more
doaj +1 more source
Assessment of Physical and Hydraulic Properties of Three Rockwool Types in Comparison with Wheat Straw and Sawdust as Greenhouse Growth Media [PDF]
علوم آب و خاک, 2023 According to the rapid population growth, the challenging issue of production of economic and suitable food sources has led to greater attention to soilless culture greenhouse production systems.
Sh. Shahmansouri +2 more
doaj
Extent and persistence of soil water repellency induced by pines in different geographic regions
Journal of Hydrology and Hydromechanics, 2018 The extent (determined by the repellency indices RI and RIc) and persistence (determined by the water drop penetration time, WDPT) of soil water repellency (SWR) induced by pines were assessed in vastly different geographic regions.
Iovino Massimo +10 more
doaj +1 more source
Numerical investigation of turbulent flow heat transfer and pressure drop of AL2O3/water nanofluid in helically coiled tubes [PDF]
, 2013 Passive convective heat transfer enhancement can be achieved by improving the thermo-physical properties of the working fluid, changing flow geometry or both.
Mahmoud, Saad +7 more
core +1 more source