Relation between oil-water interfacial flow structure and their separation in the oil-water mixture flow in a curved channel: An experimental study

2019 ◽  
Vol 120 ◽  
pp. 103089 ◽  
Author(s):  
Linfeng Piao ◽  
Hyungmin Park
Keyword(s):  
Experimental Study ◽  
Flow Structure ◽  
Water Mixture ◽  
Interfacial Flow ◽  
Curved Channel ◽  
Mixture Flow ◽  
Oil Water

Prediction of Dispersion Viscosity of Oil/Water Mixture Flow in Horizontal Pipes

1988 ◽  
Author(s):  
A.E. Martinez ◽  
S. Arirachakaran ◽  
O. Shoham ◽  
J.P. Brill
Keyword(s):  
Water Mixture ◽  
Mixture Flow ◽  
Horizontal Pipes ◽  
Oil Water

Experimental study of the grain-water mixture flow past a cylinder of different shapes

2013 ◽  
Vol 38 ◽  
pp. 101-113 ◽  
Author(s):  
Sandro Longo ◽  
Alessandro Valiani ◽  
Luisfilippo Lanza ◽  
Dongfang Liang
Keyword(s):  
Experimental Study ◽  
Water Mixture ◽  
Mixture Flow ◽  
Flow Past ◽  
Flow Past A Cylinder ◽  
Different Shapes

CFD Simulations of Oil-Water Flow Behavior in Horizontal Pipe Separator

2019 ◽  
Author(s):  
Srinivas Swaroop Kolla ◽  
Ram S. Mohan ◽  
Ovadia Shoham
Keyword(s):  
Flow Behavior ◽  
Scale Up ◽  
Water Mixture ◽  
Hexahedral Mesh ◽  
Cfd Simulations ◽  
Mixture Flow ◽  
Horizontal Pipe ◽  
Vof Model ◽  
Oil Water ◽  
Grid Convergence Index

Abstract Horizontal Pipe Separators (HPS©) are used for separation of oil and water especially in subsea environment owing to its simplicity, installation, and operation. In the present work, the flow phenomena in the HPS with 0.0762m ID and 10.3 m long separating oil and water with specific gravities of 1 and 0.857 is simulated and analyzed using ANSYS Fluent 16. Hexahedral mesh with boundary layers has been done utilizing ANSYS design modeler for this analysis. A grid independence study is performed on 3 different mesh grids using grid convergence index. 3-D simulations are carried out using a Hybrid Eulerian-Eulerian Multifluid VOF model for watercuts ranging from 20 to 80% and a mixture velocity of 0.08 m/s. The CFD simulations analyzed the effect of watercut on the oil-water mixture flow behavior and the entry region required for the oil and water to separate in the HPS. These simulation results are validated against acquired experimental data by Othman in 2010. These simulations provide an insight to understand the effects of diameter, watercut, and mixture velocities on the performance of HPS to aid in its design and scale up/down studies.

Shear Effects on Phase Inversion in Oil-Water Flow

2015 ◽  
Author(s):  
Mo Zhang ◽  
Shoubo Wang ◽  
Ram S. Mohan ◽  
Ovadia Shoham ◽  
Haijing Gao
Keyword(s):  
Phase Inversion ◽  
Petroleum Industry ◽  
Continuous Phase ◽  
Production Equipment ◽  
Current Phase ◽  
Dispersed Phase ◽  
Gear Pump ◽  
Water Mixture ◽  
Mixture Flow ◽  
Oil Water

Oil-water dispersed flow, in which one of the phases either water or oil is dispersed into the other phase, which is the continuous phase, occurs commonly in Petroleum Industry during the production and transportation of crudes. Phase inversion occurs when the dispersed phase grows into the continuous phase and the continuous phase becomes the dispersed phase caused by changes in the composition, interfacial properties and other factors. Production equipment, such as pumps and chokes, generate shear in oil-water mixture flow, which has a strong effect on phase inversion phenomena. In this study, based on the newly acquired data on a gear pump, the relationship between phase inversion region and shear intensity are discussed and the limitation of current phase inversion prediction model is presented.

Controlling porosity and density of nanocellulose aerogels for superhydrophobic light materials

TAPPI Journal ◽  
2018 ◽  
Vol 17 (03) ◽  
pp. 145-153 ◽  
Author(s):  
Chengua Yu ◽  
Feng Wang ◽  
Shiyu Fu ◽  
Lucian Lucia
Keyword(s):  
Contact Angle ◽  
Freeze Drying ◽  
Engine Oil ◽  
High Porosity ◽  
Water Mixture ◽  
Waste Engine Oil ◽  
Hydrophobically Modified ◽  
Static Contact ◽  
Oil Water ◽  
Hydrophobic Material

A very low-density oil-absorbing hydrophobic material was fabricated from cellulose nanofiber aerogels–coated silane substances. Nanocellulose aerogels (NCA) superabsorbents were prepared by freeze drying cellulose nanofibril dispersions at 0.2%, 0.5%, 0.8%, 1.0%, and 1.5% w/w. The NCA were hydrophobically modified with methyltrimethoxysilane. The surface morphology and wettability were characterized by scanning electron microscopy and static contact angle. The aerogels displayed an ultralow density (2.0–16.7 mg·cm-3), high porosity (99.9%–98.9%), and superhydrophobicity as evidenced by the contact angle of ~150° that enabled the aerogels to effectively absorb oil from an oil/water mixture. The absorption capacities of hydrophobic nanocellulose aerogels for waste engine oil and olive oil could be up to 140 g·g-1 and 179.1 g·g-1, respectively.

scholarly journals Fabrication of silica/PVA-co-PE nanofiber membrane for oil/water separation

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yuanli Chen ◽  
Hui Fan ◽  
Xinlin Zha ◽  
Wenwen Wang ◽  
Yi Wu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Silicone Oil ◽  
Hydroxyl Groups ◽  
Water Mixture ◽  
Silica Nanospheres ◽  
Nanofiber Membrane ◽  
Water Separation ◽  
Oil Water Separation ◽  
Silica Nanostructures ◽  
Oil Water

AbstractHigh efficiency and anti-pollution oil/water separation membrane has been widely explored and researched. There are a large number of hydroxyl groups on the surface of silica, which has good wettability and can be used for oil-water separation membranes. Hydrophilic silica nanostructures with different morphologies were synthesized by changing templates and contents of trimethylbenzene (TMB). Here, silica nanospheres with radical pores, hollow silica nanospheres and worm-like silica nanotubes were separately sprayed on the PVA-co-PE nanofiber membrane (PM). The abundance of hydroxyl groups and porous structures on PM surfaces enabled the absorption of silica nanospheres through hydrogen bonds. Compared with different silica nanostructures, it was found that the silica/PM exhibited excellent super-hydrophilicity in air and underwater “oil-hating” properties. The PM was mass-produced in our lab through melt-extrusion-phase-separation technique. Therefore, the obtained membranes not only have excellent underwater superoleophobicity but also have a low-cost production. The prepared silica/PM composites were used to separate n-hexane/water, silicone oil/water and peanut oil water mixtures via filtration. As a result, they all exhibited efficient separation of oil/water mixture through gravity-driven filtration.

scholarly journals Experimental study of a flow structure in coplanar channels

2020 ◽  
Vol 1683 ◽  
pp. 022088
Author(s):  
V I Terekhov ◽  
A V Zolotukhin ◽  
I A Chohar
Keyword(s):  
Experimental Study ◽  
Flow Structure ◽  
Coplanar Channels
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