Wax Deposition Modeling with Considerations of Non-Newtonian Fluid Characteristics

2016 ◽  
Author(s):  
Sheng Zheng ◽  
Mohamed Saidoun ◽  
Khalid Mateen ◽  
Thierry Palermo ◽  
Yiyu Ren ◽  
...  
Keyword(s):  
Newtonian Fluid ◽  
Wax Deposition ◽  
Deposition Modeling ◽  
Fluid Characteristics

Wax deposition modeling of oil/gas stratified smooth pipe flow

AIChE Journal ◽  
2016 ◽  
Vol 62 (7) ◽  
pp. 2550-2562 ◽  
Author(s):  
Jimiao Duan ◽  
Huishu Liu ◽  
Jinfa Guan ◽  
Weixing Hua ◽  
Guangwei Jiao ◽  
...  
Keyword(s):  
Pipe Flow ◽  
Wax Deposition ◽  
Deposition Modeling ◽  
Smooth Pipe ◽  
Oil Gas

Wax Deposition Modeling with Considerations of Non-Newtonian Characteristics: Application on Field-Scale Pipeline

2017 ◽  
Vol 31 (5) ◽  
pp. 5011-5023 ◽  
Author(s):  
Sheng Zheng ◽  
Mohamed Saidoun ◽  
Thierry Palermo ◽  
Khalid Mateen ◽  
H. Scott Fogler
Keyword(s):  
Field Scale ◽  
Wax Deposition ◽  
Deposition Modeling

scholarly journals Wax deposition modeling of oil/water stratified channel flow

AIChE Journal ◽  
2010 ◽  
Vol 57 (4) ◽  
pp. 841-851 ◽  
Author(s):  
Zhenyu Huang ◽  
Michael Senra ◽  
Ravi Kapoor ◽  
H. Scott Fogler
Keyword(s):  
Channel Flow ◽  
Wax Deposition ◽  
Deposition Modeling ◽  
Oil Water

Effects of thermal hydrolysis temperature on physical characteristics of municipal sludge

2015 ◽  
Vol 72 (11) ◽  
pp. 2018-2026 ◽  
Author(s):  
Guohong Feng ◽  
Yabing Guo ◽  
Wei Tan
Keyword(s):  
Particle Size ◽  
Water Content ◽  
Newtonian Fluid ◽  
Bound Water ◽  
Flow Index ◽  
Thermal Hydrolysis ◽  
Municipal Sludge ◽  
Hydrolysis Temperature ◽  
Bound Water Content ◽  
Fluid Characteristics

Effects of thermal hydrolysis temperature on the physical properties of municipal sludge was further studied by a series of experiments. There was a decrease in bound water content with an increase in hydrolysis temperature, while there was an increase in pH at temperatures below 120 °C, and a decrease at temperatures exceeding 120 °C. An analysis of settleability, centrifugation and vacuum filtration of the treated sludge indicated that the threshold temperature was 120 °C, which was the same as the temperature for the bound water content and particle size. In addition, raw sludge with a solids content of 100 g/L, exhibited significant non-Newtonian fluid characteristics. At thermal hydrolysis temperatures exceeding 120 °C, non-Newtonian fluid characteristics including liquid and solid characteristics were significantly weakened. The consistency index (k) decreased from 5.90 Pa·s to 0.068 Pa·s, while the flow index (n) increased from 0.31 to 0.74, suggesting that thermal hydrolysis sludge was much closer to Newtonian fluids compared to raw sludge. Modification of bound water content, particle size and viscosity with hydrolysis temperature, revealed the nature of improved dewaterability by thermal hydrolysis. The fractal dimension of the sludge floc increased from 2.74 to 2.90, meaning that the floc became more compact after thermal hydrolysis.

scholarly journals Pipeline wax deposition modeling: A sensitivity study on two commercial software

Petroleum ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 206-213 ◽  
Author(s):  
Giancarlo Giacchetta ◽  
Barbara Marchetti ◽  
Mariella Leporini ◽  
Alessandro Terenzi ◽  
Davide Dall’Acqua ◽  
...  
Keyword(s):  
Sensitivity Study ◽  
Wax Deposition ◽  
Commercial Software ◽  
Deposition Modeling

Numerical analysis and explore of asymmetrical fluid flow in a two-sided lid-driven cavity

2020 ◽  
Vol 14 (3) ◽  
pp. 7269-7281
Author(s):  
El Amin Azzouz ◽  
Samir Houat
Keyword(s):  
Velocity Ratio ◽  
Two Dimensional ◽  
Lower Side ◽  
Square Cavity ◽  
Driven Cavity ◽  
Parallel Motion ◽  
Bottom Cavity ◽  
Secondary Vortices ◽  
Volume Method ◽  
Fluid Characteristics

The two-dimensional asymmetrical flow in a two-sided lid-driven square cavity is numerically analyzed by the finite volume method (FVM). The top and bottom walls slide in parallel and antiparallel motions with various velocity ratio (UT/Ub=λ) where |λ|=2, 4, 8, and 10. In this study, the Reynolds number Re1 = 200, 400, 800 and 1000 is applied for the upper side and Re2 = 100 constant on the lower side. The numerical results are presented in terms of streamlines, vorticity contours and velocity profiles. These results reveal the effect of varying the velocity ratio and consequently the Reynolds ratio on the flow behaviour and fluid characteristics inside the cavity. Unlike conventional symmetrical driven flows, asymmetrical flow patterns and velocity distributions distinct the bulk of the cavity with the rising Reynolds ratio. For λ>2, in addition to the main vortex, the parallel motion of the walls induces two secondary vortices near the bottom cavity corners. however, the antiparallel motion generates two secondary vortices on the bottom right corner. The parallel flow proves affected considerably compared to the antiparallel flow.

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