Heuristic Theory on Diffusive Mixing Behavior at Fracture Junctions

2000 ◽  
pp. 28-41
Author(s):  
Chunhong Li ◽  
John L. Wilson
Keyword(s):  
Mixing Behavior ◽  
Diffusive Mixing

scholarly journals Double-diffusive mixing makes a small contribution to the global ocean circulation

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Carine G. van der Boog ◽  
Henk A. Dijkstra ◽  
Julie D. Pietrzak ◽  
Caroline A. Katsman
Keyword(s):  
Ocean Circulation ◽  
Mechanical Energy ◽  
Global Ocean ◽  
Small Contribution ◽  
Global Ocean Circulation ◽  
Diffusive Fluxes ◽  
Diffusive Mixing ◽  
Diffusive Processes ◽  
Flowing Waters ◽  
Double Diffusive

AbstractDouble-diffusive processes enhance diapycnal mixing of heat and salt in the open ocean. However, observationally based evidence of the effects of double-diffusive mixing on the global ocean circulation is lacking. Here we analyze the occurrence of double-diffusive thermohaline staircases in a dataset containing over 480,000 temperature and salinity profiles from Argo floats and Ice-Tethered Profilers. We show that about 14% of all profiles contains thermohaline staircases that appear clustered in specific regions, with one hitherto unknown cluster overlying the westward flowing waters of the Tasman Leakage. We estimate the combined contribution of double-diffusive fluxes in all thermohaline staircases to the global ocean’s mechanical energy budget as 7.5 GW [0.1 GW; 32.8 GW]. This is small compared to the estimated energy required to maintain the observed ocean stratification of roughly 2 TW. Nevertheless, we suggest that the regional effects, for example near Australia, could be pronounced.

scholarly journals Investigation of Mixing Behavior of Hydrogen Blended to Natural Gas in Gas Network

2021 ◽  
Vol 13 (8) ◽  
pp. 4255
Author(s):  
Mingmin Kong ◽  
Shuaiming Feng ◽  
Qi Xia ◽  
Chen Chen ◽  
Zhouxin Pan ◽  
...  
Keyword(s):  
Natural Gas ◽  
Torsion Angle ◽  
Carbon Dioxide Emissions ◽  
Pressure Loss ◽  
Optimum Number ◽  
Hydrogen Energy ◽  
Gas Mixing ◽  
Gas Network ◽  
Mixing Performance ◽  
Mixing Behavior

Hydrogen is of great significance for replacing fossil fuels and reducing carbon dioxide emissions. The application of hydrogen mixing with natural gas in gas network transportation not only improves the utilization rate of hydrogen energy, but also reduces the cost of large-scale updating household or commercial appliance. This paper investigates the necessity of a gas mixing device for adding hydrogen to existing natural gas pipelines in the industrial gas network. A three-dimensional helical static mixer model is developed to simulate the mixing behavior of the gas mixture. In addition, the model is validated with experimental results. Parametric studies are performed to investigate the effect of mixer on the mixing performance including the coefficient of variation (COV) and pressure loss. The research results show that, based on the, the optimum number of mixing units is three. The arrangement of the torsion angle of the mixing unit has a greater impact on the COV. When the torsion angle θ = 120°, the COV has a minimum value of 0.66%, and when the torsion angle θ = 60°, the COV has a maximum value of 8.54%. The distance of the mixing unit has little effect on the pressure loss of the mixed gas but has a greater impact on the COV. Consecutive arrangement of the mixing units (Case A) is the best solution. Increasing the distance of the mixing unit is not effective for the gas mixing effect. Last but not least, the gas mixer is optimized to improve the mixing performance.

Liquid Structure, Thermodynamics, and Mixing Behavior of Saturated Hydrocarbon Polymers. 1. Cohesive Energy Density and Internal Pressure

1998 ◽  
Vol 31 (20) ◽  
pp. 6991-6997 ◽  
Author(s):  
Janna K. Maranas ◽  
Maurizio Mondello ◽  
Gary S. Grest ◽  
Sanat K. Kumar ◽  
Pablo G. Debenedetti ◽  
...  
Keyword(s):  
Energy Density ◽  
Internal Pressure ◽  
Cohesive Energy ◽  
Saturated Hydrocarbon ◽  
Liquid Structure ◽  
Cohesive Energy Density ◽  
Mixing Behavior ◽  
Hydrocarbon Polymers

Mixing Behavior of Anionic Hydrotropes with Cationic Gemini Surfactants

2010 ◽  
Vol 55 (11) ◽  
pp. 4775-4779 ◽  
Author(s):  
Iqrar Ahmad Khan ◽  
Ahmad Jahan Khanam ◽  
Ziya Ahmad Khan ◽  
Kabir-ud-Din
Keyword(s):  
Gemini Surfactants ◽  
Cationic Gemini Surfactants ◽  
Mixing Behavior

Observed Mixing Behavior of Single Particles in a Bubbling Fluidized Bed of Higher-Density Particles

2012 ◽  
Vol 51 (44) ◽  
pp. 14566-14576 ◽  
Author(s):  
Jack Halow ◽  
Kerri Holsopple ◽  
Benjamin Crawshaw ◽  
Stuart Daw ◽  
Charles Finney
Keyword(s):  
Fluidized Bed ◽  
Single Particles ◽  
Mixing Behavior ◽  
Bubbling Fluidized Bed

scholarly journals Effect of Paddle Rotational Speed on Particle Mixing Behavior in Electrophotographic System by Using Parallel Discrete Element Method

2009 ◽  
Vol 46 (3) ◽  
pp. 169-179
Author(s):  
Hiroshi Mio ◽  
Ryohei Higuchi ◽  
Wakana Ishimaru ◽  
Atsuko Shimosaka ◽  
Yoshiyuki Shirakawa ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Rotational Speed ◽  
Discrete Element ◽  
Particle Mixing ◽  
Mixing Behavior ◽  
Element Method

Investigation on mixing behavior and heat transfer in a horizontally arranged tee pipe under turbulent mixing of hot and cold fluid

2019 ◽  
Vol 127 ◽  
pp. 139-155
Author(s):  
Tao Lu ◽  
Yue Zhang ◽  
Kaili Xu ◽  
Yinqiang Chen ◽  
Jinqiang Zou
Keyword(s):  
Heat Transfer ◽  
Turbulent Mixing ◽  
Cold Fluid ◽  
Mixing Behavior
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