Sökning: "sudden expansion"
Visar resultat 1 - 5 av 11 avhandlingar innehållade orden sudden expansion.
1. An experimental study of the flow of concentrated pulp suspension through a sudden expansion and over a backward facing step
Sammanfattning : Large amounts of pulp suspensions are handled in the pulp and paper industry annually. In order to produce the final product, paper, a lot of energy is required, e.g. for pumping and drying the suspensions. LÄS MER
2. Methods and techniques for precise and accurate in-duct aero-acoustic measurements : Application to the area expansion
Sammanfattning : During the design and commissioning of combustion equipment, combustion associated instabilities are commonly encountered. These thermo-acoustic instabilities can cause undesirable noise, vibrations, local thermal and mechanical stresses in the combustor and are prominent in lean combustion. LÄS MER
3. Assessing precision and accuracy in acoustic scattering matrix measurements
Sammanfattning : Acoustic scattering matrices are used to characterize the influence of inline duct elements on the acoustic wave propagation in wave guides.When measuring the properties of these matrices, errors are always present in the results and need to be characterized to make valid statements on the correspondence between model predictions and measurements. LÄS MER
4. Analytical and Numerical Studies of Internal Swirling Flows
Sammanfattning : Swirling flows are common in technical applications, e.g. turbines, pumps, fans, compressors and combustors. LÄS MER
5. The Environment, Education, and Media: Essays in Applied Microeconomics : Essays in Applied Microeconomics
Sammanfattning : This doctoral thesis in Economics consists of four chapters. In chapter 1, I study the economic consequences of environmental enforcement. In the Brazilian Amazon, I study how the enforcement of anti-deforestation policies affect agricultural and economic outcomes. LÄS MER