Sökning: "Dispersion coefficient"
Visar resultat 1 - 5 av 52 avhandlingar innehållade orden Dispersion coefficient.
1. Dispersion Engineering : Negative Refraction and Designed Surface Plasmons in Periodic Structures
Sammanfattning : The dispersion property of periodic structures is a hot research topic in the last decade. By exploiting dispersion properties, one can manipulate the propagation of electromagnetic waves, and produce effects that do not exist in conventional materials. LÄS MER
2. Theoretical Investigation into Longitudinal Dispersion in Natural Rivers — A Scaling Dispersion Model
Sammanfattning : Using a broad variety of scientific methods this dissertation systematically investigates the fundamental mechanisms underlying the dispersion processes in natural rivers and their mathematical descriptions in a geometrical framework. Emphasis is on the geometrical variations and irregularities of a natural river and their scales. LÄS MER
3. Long-range intermolecular dispersion forces and circular dichroism spectra from first-principles calculations
Sammanfattning : This work presents first-principles calculations of long-range intermolecular dispersion energies between two atoms or molecules and of electronic circular dichroism spectra of chiral molecules. The former is expressed in terms of the C6 dipole-dipole dispersion coefficients Δε, and the latter is given in terms of the extinction coefficient. LÄS MER
4. Fluid dynamics and mass transfer in bubble columns with and without packing
Sammanfattning : Bubble columns are used in the chemical industry to perform gas liquid reactions, like oxidation, hydrogenation and fermentation. The objective of the present thesis was mainly to study the fluid dynamics of semi batch packed bubble columns at both atmospheric and pressurized conditions. LÄS MER
5. Heat Balance Modeling of a Stationary Fluidized-Bed Furnace Burning Biomass
Sammanfattning : The influence of biomass fuel properties on the heat balance of the bottom region (bed and splash zone) of a commercial-scale bubbling fluidized-bed furnace is investigated theoretically and experimentally. The experiments have been carried out at the Chalmers 12 MWth research boiler, operated under non-circulating conditions during most of the experiments. LÄS MER