Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Adhesion (1)
- Cross flow gas-solid (1)
- Deformation (1)
- Direct numerical simulation (1)
- Energetic materials (1)
-
- Evaporating sprays (1)
- Extraction (1)
- High-speed projectiles (1)
- Ignition (1)
- Impact material processing (1)
- Isoconversion techniques (1)
- Leidenfrost (1)
- Leukocyte (1)
- Liguid impact (1)
- Microjets (1)
- Migration (1)
- Milling (1)
- Nanocoating (1)
- Nanocomposites (1)
- Nanoparticle (1)
- PVP (1)
- Phase interactions (1)
- Pressure driven flow (1)
- Reactive (1)
- Supercritical fluids (1)
- Waterjet (1)
Articles 1 - 5 of 5
Full-Text Articles in Engineering
Direct Simulations Of Cells Motions And Deformations In Flow, Quan Jin
Direct Simulations Of Cells Motions And Deformations In Flow, Quan Jin
Dissertations
Direct numerical simulations (DNS) are used to study the motions and deformations of blood cells, especially leukocytes, in pressure driven flows in parallel plate channels with both smooth and uneven walls under adhesion force between the leukocytes and the channel wall.
Leukocytes are represented by two composite fluid models. The first model is the compound-drop model in which the cytoplasm and the nucleus are modeled as fluids, and the second one is the drop-rigid-particle model in which the cytoplasm is modeled as a fluid and the nucleus as a rigid particle. The adhesion force is computed using two adhesion force …
Synthesis And Analysis Of Reactive Nanocomposites Prepared By Arrested Reactive Milling, Swati M. Umbrajkar
Synthesis And Analysis Of Reactive Nanocomposites Prepared By Arrested Reactive Milling, Swati M. Umbrajkar
Dissertations
Different types of reactive nanocomposites have been synthesized by Arrested Reactive Milling (ARM). The technical approach was to increase the interface area available for heterogeneous reaction between solid fuel and oxidizer components. Using aluminum as the main fuel and different metal oxides as oxidizers, highly energetic reactive nanocomposites with different degrees of structural refinement were synthesized. Specifically, stoichiometric Al-MoO3, Al-CuO, and Al-NaNO3 material systems were studied in detail.
The correlation of heterogeneous exothermic reactions occurring in the nanocomposite powders upon their heating at low rates and ignition events observed for the same powders heated rapidly was of …
Nanoparticle Formation And Coating Using Supercritical Fluids, Abhijit Aniruddha Gokhale
Nanoparticle Formation And Coating Using Supercritical Fluids, Abhijit Aniruddha Gokhale
Dissertations
Jet breakup phenomenon and nanoparticle formation
The focus of this dissertation is to study the SAS process to manufacture nanoparticles with minimum agglomeration, controlled size and size distribution. Solution jet breakup and solvent evaporation into supercritical fluid (SC CO2) is studied using high speed charged coupled device (CCD) camera facilitated with double shot particle image veloimetry (PIV) laser and a high pressure view cell. Particles formation using SAS is studied. Polyvinylpyrrolidone (PVP) particles are formed using micron size capillary nozzles and combination of thermodynamically good and poor solvents in order to achieve nano-sized particles with reduced agglomeration and …
Flow Characteristics And Phase Interactions Of Evaporating Sprays In Gas-Solid Suspensions, Muhammad Mushahid Rafique Qureshi
Flow Characteristics And Phase Interactions Of Evaporating Sprays In Gas-Solid Suspensions, Muhammad Mushahid Rafique Qureshi
Dissertations
Evaporating spray jets have a wide range of applications in many industrial processes such as fluidized catalytic cracking of crude oil in petroleum refinery, coal gasification, fluidized coking to make synthetic crude oil, and condensed mode gas polymerization. The rapid evaporation of spray jets significantly affects the gas-solids mixing, solids concentration, gas/solids temperature and gas/solids velocity acceleration. The complex interactions mechanism of phase change, three phase interaction, heat and mass transfer of gas, solids and evaporating droplets dominate the process efficiency and product quality. In such three-phase flows, the phase transport characteristics are influenced by both droplet-gas interaction and droplet-solid …
Investigation Of Formation And Applications Of High-Speed Liquid Projectiles, Oleg Petrenko
Investigation Of Formation And Applications Of High-Speed Liquid Projectiles, Oleg Petrenko
Dissertations
The work comprises experimental and numerical studies of generation and application of high-speed liquid projectiles. Numerical models were created for a projectile formation by two kinds of launchers, water extruder and water cannon. In the water extruder the kinetic energy of a fast moving piston is transferred to the water load and extrudes the load at a high speed. By contrast in the water cannon the water load itself accumulates the kinetic energy from the expanding combustion gasses. Then, in the course of water motion through the converging nozzle the energy is redistributed between head and tail of the projectile. …