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 16 of 16 for “"slugging"”.
-
Effect of particle size on slugging fluidised beds
… air velocity. In Chapter 4 the expansion of slugging fluidised beds is considered, and it is shown that an expansion less than that predicted by "ideal slug theory" can be fully explained by enhanced slug velocities, and is not in any way an indictment of the "two-phase theory" of …
-
Slug Formation and Frequency of Slugging in Gas-Liquid Flows
… flow is supercritical. However, the frequency of slugging is observed to be periodic and equal to the frequency of long wavelength waves that are predicted by linear stability.
-
Amateur baseball players: what are the relative merits of attending college versus going directly to the minor leagues?
… runs batted in (RBI), on base percentage (OBP), slugging (SLG), and on base + slugging (OPS). The results also demonstrated that a few offensive performance measures significantly affected career length in the major leagues, while other factors (age, education, team drafted, round drafted, …
-
Modeling the Hydrodynamics of a Fluidized Bed
… predicting characteristic features of bubbling, slugging, and turbulent fluidization regimes. It was determined that the fluidized bed can be modeled using MUSCL discretization and the Ahmadi turbulence model. Three-dimensional sand fluidized beds were simulated for different fluidization …
-
COMPRESSION AND MOISTURE EFFECTS ON THE STABILITY OF DRY VITAMIN A ACETATE IN COMPRESSED TABLETS
… effect that may be contributed dur—ing slugging. To evaluate the resistance of the gelatin beadlets to the des-tructive forces existing during tablet compression a number of dif-ferent tests were employed. Dry vitamin A acetate was incorporated into two basic tablet formulations. The …
-
Concentration Characteristics and Batting Performance In Collegiate Baseball and Softball
… performance the OPS (on-base percentage plus slugging percentage) batting statistic was utilized. Results displayed no significant relationships between OPS and B-TAIS subscales among collegiate baseball participants. Also, no subscales explained variance in OPS. Significant relationships were …
-
A Computational Study of the Hydrodynamics of Gas-Solid Fluidized Beds
… bed to show the distinction between bubbling, slugging, and turbulent flow regimes by examining void fraction contours and bubble dynamics, as well as by comparison of simulated data with an established trend of standard deviation of pressure versus inlet gas velocity. Modeling was carried out …
-
Mechanistic study of slug formation and evolution in high-viscosity-liquid/High-density-gas multiphase flows in channels/pipes
… evolution of interfacial waves leading to slugging in concurrent high-viscosity (laminar) liquid/high-density(turbulent) gas two-phase flows in horizontal channels/pipes. We first develop a Fully-Coupled Immersed Flow (FCIF) solver for the three-dimensional simulation of fluid-fluid …
-
Novel Application of Twin Screw Extruder on Production of Diverse Formulations
… the widely applied dry granulation technologies, slugging and roller compaction, have some limitations: single batch operation, low manufacturing throughput, high amounts of fines and dust, inferior tensile strength of final tablet and loud operation. The previously unreported study of applying …
-
Solids mixing and segregation in a gas spout-fluid bed-effect of the distributor design
… showed that there is a maximum (1.5) above which slugging occurs and the effect of the distributor design is nullified. A mixing number was developed for unidensity spherical rich systems, which proved to be extremely useful in quantifying the variation in mixing and segregation with changes in …
-
Determination of the coefficient of heat transfer at the bed wall boundary of an externally heated fluidized bed
… per hour-square foot, the velocity at which slugging occurred throughout the bed. The horizontal temperature gradient across the bed increased with increasing bed wall temperature, increasing from a minimum of 0 °F at 200 °F wall temperature to 6 °F at 600 °F . The rate of heat flux to the …
-
Fluidized-bed combustion of coal
… to the possible transition from a bubbling to~ slugging flow regime taking place in the fluidized bed. A semi-quantitative model has been derived based on the work of a few authors to describe the combustion and entrainment phenomena. Although the model predicts trends satisfactorily, much work …
-
The vertical flow centrifugal gas-liquid separator and its application to the removal of gases from geothermal wells
… to give the best performance especially with slugging inlet flow which occurs at relatively low vapour mass fractions. The distance between the vortex generator and the gastube inlet has been shown to have little effect on the separation efficiency. Improvements in the design of the vortex …
-
Multiscale continuum simulations of fluidization : bubbles, mixing dynamics and reactor scaling
… the bed center forming slugs. The transition to slugging also marks a shift in the dominant solids circulation pattern and is dependent on the bed geometry and excess gas velocity. The analysis conclusively demonstrates that (a) the hydrodynamics are independent of walls only when bubbles are …
-
Multiphase flow modeling and deposition of hydrates in oil and gas pipelines
… was incorporated into the models to predict the slugging and accumulation of hydrates for different geometries. This hydrodynamic model predicts flow regime transitions among stratified, stratified-wavy, slug, and bubble flow with and without hydrates. A first pass model for the slip between gas …
-
DeepBall: Modeling expectation and uncertainty in baseball with recurrent neural networks
Making reliable preseason batter projections for baseball players is an issue of utmost importance to both teams and fans who seek to infer a player's underlying talent or predict future performance. However, this has proven to be a difficult task due to the high-variance nature of baseball and the …