Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 168 for “"sprays"”.
-
Sprays in Hot Turbulent Gas Streams
Made available in DSpace on 2014-12-05T17:15:12Z (GMT). No. of bitstreams: 1 0009053.pdf: 8902424 bytes, checksum: b500b220f4a2709349f8091f5471e35e (MD5) Previous issue date: 1954
-
AGRICULTURAL SPRAYS IN NON-UNIFORM CROSS-FLOW
… characteristics of droplets in agricultural sprays generated from two flat fan nozzles were studied in a wind tunnel using a Phase-Doppler Particle Analyzer. A sheared cross flow pattern, having lower velocities near the wind tunnel floor and increasing velocities with increasing distance …
-
Evaporating crossflow sprays in gas-solid flows
Injection of evaporating sprays into gas-solid flows is encountered in many engineering processes such as energy production industry and chemical industry. The phenomenon involves phase change, three-phase interactions, heat and mass transfer. All of these characteristics control the process …
-
LES of Jets and Sprays Injected into Crossflow
The objective of this thesis is to numerically simulate a fluid jet injected into a crossflow of the same or another fluid, respectively. Such flows are encountered in many engineering applications in which cooling or mixing plays an important role, e.g. gas turbine combustors. The jet in crossflow …
-
Droplet deposition on hydrophobic surfaces for agricultural sprays
… in enhancing the retention efficiency of sprays. Large amounts of agricultural sprays are wasted worldwide, due to the poor retention on hydrophobic plants. As the harmful effects of pesticides in particular are more and more pointed out, there is an increasing pressure to reduce their use …
-
Gas-solid transport and reaction via intervened evaporating sprays
… with reaction via intervened evaporating sprays in the FCC riser is specially important but complicated, with coupled mechanisms of chemical reaction and heat, momentum and mass transfer among multiple phases (liquid, solid and gas) in the restriction of wall boundary. Recent developments …
-
A study of spray forming using uniform droplet sprays
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
-
The Utilization of Post-Harvest Urea Sprays by Senescing Apple Leaves, Changes in Urease Activity, and The Effect of Urea Sprays Upon Subsequentyield
Made available in DSpace on 2014-12-12T00:57:21Z (GMT). No. of bitstreams: 1 7219929.pdf: 2255103 bytes, checksum: 4bd0a78f3be8b9fbef3be0e6d0632be3 (MD5) Previous issue date: 1972
-
Atomization of water sprays in a high-speed air stream
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1952.
-
Characterization of Black Liquor Sprays for Application to Entrained-Flow Processes
… of water and high solids, heated black liquor sprays from air-assist atomizers are examined. Sprays were imaged with a high speed camera and the images analyzed with computer code to produce droplet size data and macroscopic spray characteristics such as mass distribution. Fluid flow rates were …
-
Droplets, splashes and sprays: highly detailed liquids in visual effects production.
… often combining waves, splashes, droplets and sprays, are a particular example of this. Whilst there has been a huge amount of research on liquid simulation in the last decade or so, little has been successful in reducing the number of layers or elements required to create a plausible final …
-
Effects of drop size and drop velocity on cooling characteristics of sprays
… drop velocity on the cooling characteristics of sprays was investigated in this study. Various line pressures and distances from the nozzle were used to obtain Sauter mean drop sizes between 200 and 300 microns, and velocities between 80 and 130 m/s. Local heat flux data were collected using the …
-
Flow characteristics and phase interactions of evaporating sprays in gas-solid suspensions
… gas-solid suspensions, the rapid vaporization of sprays results from the droplet-solids collisions. With the preheated temperature of solids beyond the Leidenfrost temperature, the heat transfer into spray droplets and resulted vaporization can be greatly restricted by the film boiling …
-
Advanced methods for droplet capture in water recovery systems and agricultural sprays
Water scarcity is one of the important challenges of our century. In this thesis, we investigate advanced methods to mitigate it in two ways: water recovery from fog and reducing chemicals runoff in agriculture. In the first part, we review current fog collector design and identify droplet …
-
PLIF investigation of the fuel distribution in gasoline direct injection fuel sprays
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
-
Evaluation of Various Foliar Sprays for Use as a Canada Goose Grazing Deterrent
… Canada goose grazing deterrents. I applied these sprays on test plots in soybean (Glycine max) fields throughout Day County, South Dakota. Electric fences were placed around test plots. Once use by Canada geese had been established, sites were immediately sprayed and monitored using time lapse …
-
Modeling of Air-Assisted and Flash Boiling Sprays in Gasoline Direct Injection Engines
… simulations were made for air-assisted sprays and flash boiling sprays. Both the air-assisted sprays and flash boiling sprays reduced fuel impingement substantially compared with a conventional GDI fuel injector. The air-assisted fuel injector produced the softest sprays in this study, …
-
Evaluation of hot surface ignition device performance with high-pressure kerosene fuel sprays
Among the range of commercially feasible propulsion systems, compression ignition (CI) engines present many advantages for light-duty vehicle operation. In particular, CI engines remain an optimal choice for unmanned aerial vehicles (UAVs) designed to operate at moderate flight speeds. However, one …
Page 1 of 9