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- Adsorption (1)
- Boiling processes (1)
- Characterization (1)
- Colloidal suspensions (1)
- Columnar and cellular pattern (1)
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- Electric field (1)
- Flow mechanism (1)
- Hydraulic fracturing (1)
- Kinetic Monte Carlo (1)
- Low gravity (1)
- Mesoporous materials (1)
- Monte Carlo methods (1)
- Nano simulation (1)
- Pore network (1)
- Pore size distribution (1)
- Positively and negatively polarized particles (1)
- Shale gas production (1)
- Shale softening (1)
Articles 1 - 3 of 3
Full-Text Articles in Physical Sciences and Mathematics
Electric-Field-Driven Processes In Multiphase Fluid Systems, Qian Lei
Electric-Field-Driven Processes In Multiphase Fluid Systems, Qian Lei
Dissertations
Advantages of using electric fields in miniaturized apparatuses for a wide range of applications are revealed by numerous experimental and theoretical studies over the last several decades as it offers a simple and efficient method for manipulation of multiphase fluid systems. This approach is considered to be especially beneficial for control of boiling processes and colloidal suspensions considered in the presented work.
Boiling. Today's trends for enhancing boiling heat transfer in terrestrial and space applications focus on removal of bubbles to prevent formation of a vapor layer over the surface at a high overheat. In contrast, this dissertation presents a …
Advances In Modeling Gas Adsorption In Porous Materials For The Characterization Applications, Max A. Maximov
Advances In Modeling Gas Adsorption In Porous Materials For The Characterization Applications, Max A. Maximov
Dissertations
The dissertation studies methods for mesoporous materials characterization using adsorption at various levels of scale and complexity. It starts with the topic introduction, necessary notations and definitions, recognized standards, and a literature review.
Synthesis of novel materials requires tailoring of the characterization methods and their thorough testing. The second chapter presents a nitrogen adsorption characterization study for silica colloidal crystals (synthetic opals). These materials have cage-like pores in the range of tens of nanometers. The adsorption model can be described within a macroscopic approach, based on the Derjaguin-Broekhoff-de Boer (DBdB) theory of capillary condensation. A kernel of theoretical isotherms is …
Shale Softening Based On Pore Network And Laboratory Investigations, Di Zhang
Shale Softening Based On Pore Network And Laboratory Investigations, Di Zhang
Dissertations
This dissertation consists of two major parts: Firstly, experimental investigation of four major shale softening mechanisms and quantifications of structural parameters. Secondly, numerical simulations of nano-scale flow behaviors using the previous experiments determined parameters based on modified pore network modeling.
Hydraulic fracturing is widely applied to economical gas production from shale reservoirs. Still, the gradual swelling of the clay micro/nano-pores due to retained fluid from hydraulic fracturing causes a gradual reduction of gas production. Four different gas-bearing shale samples are investigated to quantify the expected shale swelling due to hydraulic fracturing. These shale samples are subject to heated deionized (DI) …