Article
Engineering, Mechanical
Ronald E. Vieira, Farzin Darihaki, Siamack A. Shirazi
Summary: Horizontal wells are crucial for maximizing hydrocarbon recovery, but the deposition of sand particles can lead to blockages and reduced production. Therefore, studying sand deposition and erosion in intermittent flow is essential for predicting production and ensuring pipeline safety.
Article
Mechanics
Xuan Ruan, Sheng Chen, Shuiqing Li
Summary: The study investigates the early-stage agglomeration of identically charged microparticles in homogeneous isotropic turbulence through numerical simulations. It is found that as particle charge increases, the collision frequency changes, and the dominant collision mechanism shifts. In the presence of both Coulomb repulsion and adhesion, particles with moderate collision velocities are more likely to contribute to agglomerates formation.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Mechanics
Duan Z. Zhang
Summary: This study establishes a relationship between ensemble average and nearest particle statistics to study long-range particle interactions and calculate particle sedimentation velocity. Additionally, it introduces an important particle-fluid-particle stress for general multiphase flows.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Mechanics
Manuel Moriche, Daniel Hettmann, Manuel Garcia-Villalba, Markus Uhlmann
Summary: We conducted numerical simulations of heavy non-spherical particles settling under gravity and observed that oblate spheroids form columnar clusters, resulting in enhanced settling velocity. The behavior of many-particle cases is not qualitatively different from single-particle cases, contrary to previous results for spheres. We also analyzed pairwise interactions of oblate spheroids and spheres, finding similar attraction regions but noticeable differences during drafting and tumbling phases, including longer drafting phases and more collision events for free-to-rotate spheroids.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Mechanics
Cheng-Hsien Lee
Summary: This study developed a multiphase model with a novel evolution equation to address the issues of shear-induced volume change and pore-pressure feedback in submarine granular flows simulated using an Eulerian-Eulerian two-phase model. The evolution equation effectively describes the relaxation process of static solid pressure and shear-induced volume change, allowing the model to capture phenomena such as time delays in initiating flows and different collapse processes for differently packed columns.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Energy & Fuels
Ahmed Alhosani, Nagu Daraboina
Summary: The study developed a multiphase simulator to predict asphaltene deposition and validated the robustness of the simulation results. It was found that using single-phase assumption under multiphase conditions led to significant errors, which could result in economic and operational burdens for the oil and gas industry.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Pavel G. Struchalin, Boris V. Balakin
Summary: This paper presents a simple and low-cost method to decrease the plugging risk in a flow system by streamlining the internal geometry of pipes. The approach was tested experimentally and resulted in an increased particle concentration of a plug-free regime and a decreased minimum transport Reynolds number.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Mechanics
Jooyeon Park, Hyungmin Park
Summary: In this study, the effects of counter-rotating vortex pairs on particle dispersion patterns in a particle-laden upward jet with a horizontal crossflow were experimentally investigated. The results showed that the dynamics of the flow, influenced by the velocity ratio and particle Stokes number, play a crucial role in particle dispersion. Counter-rotating vortex pairs above the jet exit were found to significantly affect the movement of particles, with different regimes of particle dispersion identified based on Stokes number and velocity ratio.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Engineering, Chemical
Oscar Punch, Megan Danczyk, Mathew Hawken, Daniel J. Holland
Summary: This study investigates oblique collisions between two spherical particles with a thin viscous liquid coating. Experimental measurements using particle tracking velocimetry are compared with numerical simulations using the discrete-element method and models for viscous force and capillary force. Comprehensive experimental data is presented for collisions with impact angles between 0° and 60° to ensure rigorous validation of future models. The collisions are characterized by the normal Stokes' number and the normal coefficient of restitution. Good agreement is found between the models and experiments at high Stokes' number, while poorer agreement is observed at low to medium Stokes' number and high collision angle, where tangential forces become more significant. Additionally, the models predict a decreasing rotational velocity with increasing Stokes' number, which is improved by implementing a coefficient of friction term.
Article
Green & Sustainable Science & Technology
Jiguang Wang, Qian Zhang, Rui Jin, Lunxiang Zhang, Yang Meng, Haiyuan Yao, Lei Yang, Jiafei Zhao, Yongchen Song
Summary: This study investigates the interaction between hydrate growth and multiphase flow through experiments. The results reveal the growth process of hydrates in dynamic systems and the corresponding flow patterns. Additionally, the feasibility of using the differential pressure method to predict hydrate blockage is explored, demonstrating its effectiveness and potential for improving transport capacity.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Mechanics
Jonathan M. Barnard
Summary: An experimental study on stratified particle-laden plumes identified five steady-state flow regimes with significant differences in plume height and morphology in relation to convective velocity. Particle recycling has minimal impact on plume height, while a high convective velocity leads to a significant decrease in height resembling explosive volcanic eruptions. These findings provide insights into the behavior of particle-laden plumes in different flow regimes.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Engineering, Chemical
Yun Ji, Songyong Liu, Jiguang Jia, Jian Yao
Summary: A negative-pressure auto-feeding system was designed and the effects of airflow velocity, particle size, and feeding mass on pick-up mass were investigated. The importance of each factor to the pick-up mass was determined through experiments and range analysis.
Article
Engineering, Geological
Ting Yao, Beatrice A. Baudet, Sergio D. N. Lourenco
Summary: The surface roughness of soil grains plays a significant role in the friction angle and stiffness of soil. This study investigates the evolution of surface roughness of natural sand grains under increasing normal load. It is found that the plastic deformation of asperities and bulk of sand grains affect the surface roughness. As the normal load increases, the surface roughness decreases initially and then tends to remain constant.
Article
Mechanics
S. Beetham, R. O. Fox, J. Capecelatro
Summary: In this study, model closures for multiphase Reynolds-averaged Navier-Stokes (RANS) equations are developed using sparse regression and Eulerian-Lagrangian simulations to ensure accuracy and robustness of the models across different flow conditions. The focus is on capturing the dynamics of gas-particle flows, particularly the generation of particle clusters and interphase momentum exchange, in a compact and algebraic manner.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Mechanics
Vasco Duke-Walker, W. Curtis Maxon, Sahir R. Almuhna, Jacob A. McFarland
Summary: In this study, the effects of evaporation and breakup on mixing induced by SDMI were examined through simulations and compared with experimental results. The evaporation model was validated and a new breakup model was presented for low Reynolds number droplets. Simulation results highlighted the importance of breakup parameters on evaporation rate and mixing in SDMI.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Energy & Fuels
Frits Byron Soepyan, Selen Cremaschi, Cem Sarica, Hariprasad J. Subramani, Haijing Gao
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2017)
Article
Engineering, Chemical
Zuo Zeng, Selen Cremaschi
Article
Engineering, Chemical
Brianna Christian, Selen Cremaschi
CHEMICAL ENGINEERING SCIENCE
(2018)
Article
Engineering, Chemical
Zuo Zeng, Brianna Christian, Selen Cremaschi
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Engineering, Mechanical
Wei Dai, Selen Cremaschi, Hariprasad J. Subramani, Haijing Gao
Article
Engineering, Chemical
Zuo Zeng, Selen Cremaschi
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2019)
Article
Engineering, Chemical
Wei Dai, Selen Cremaschi, Hariprasad J. Subramani, Haijing Gao
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2019)
Article
Computer Science, Interdisciplinary Applications
Wei Dai, Selen Cremaschi, Hariprasad J. Subramani, Haijing Gao
COMPUTERS & CHEMICAL ENGINEERING
(2019)
Article
Engineering, Chemical
Soumya Yadala, Justin D. Smith, David Young, Daniel W. Crunkleton, Selen Cremaschi
Proceedings Paper
Computer Science, Interdisciplinary Applications
Zuo Zeng, Selen Cremaschi
29TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, PT A
(2019)
Proceedings Paper
Engineering, Environmental
Zuo Zeng, Selen Cremaschi
28TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING
(2018)
Article
Engineering, Chemical
Brianna Christian, Selen Cremaschi
Proceedings Paper
Engineering, Chemical
Wei Dai, Selen Cremaschi, Hariprasad J. Subramanib, Haijing Gao
27TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, PT A
(2017)
Proceedings Paper
Engineering, Chemical
Sarah E. Davis, Selen Cremaschi, Mario R. Eden
27TH EUROPEAN SYMPOSIUM ON COMPUTER AIDED PROCESS ENGINEERING, PT A
(2017)
Article
Computer Science, Interdisciplinary Applications
Brianna Christian, Selen Cremaschi
COMPUTERS & CHEMICAL ENGINEERING
(2017)