Sökning: "Two phase flows"
Visar resultat 6 - 10 av 133 avhandlingar innehållade orden Two phase flows.
6. Modelling and Simulation of Turbulent Gas-Solid Flows applied to Fluidization
Sammanfattning : Modelling of gas-solid suspensions has been studied with emphasis on suitable closure laws. A study of characteristic time scales and energy dissipation mechanisms is made for the case of a simple shear flow. Applications of the modelling are presented in the form of simulation and validation of experiments in fluidized beds. LÄS MER
7. CFD MODELLING OF TWO-PHASE FLOWS AT SPILLWAY AERATORS
Sammanfattning : Due to the high-speed flow in a chute spillway, cavitation damages often occur. This undesired phenomenon threatens the safety of the structure. For the purpose of eliminating the damages, an aerator is often installed in the spillway. To understand its characteristics, physical model tests are a popular method. LÄS MER
8. Phase-changing flows: numerical methods and fully resolved simulations
Sammanfattning : Flows with evaporation and boiling are abundant in different contexts, such as geophysics, the biomedical sectors, and industrial applications. Spray combustion, boiling bubble flows, oceanic sprays, formation and evolution of clouds, spreading of infectious diseases are all relevant examples where a deeper understanding of phase-changing flows is of great importance. LÄS MER
9. Numerical simulation of multi-scale transport processes and reactions in pem fuel cells using two-phase models
Sammanfattning : A numerical study for the cathode of a PEM fuel cell has been performed in this study. The results have been limited to cathode only because, in PEM fuel cells, the oxygen reduction reactions, ORRs, are considered the rate limiting reactions and govern the fuel cell performance. LÄS MER
10. Numerical studies of two-phase flows in gas-evolving electrochemical applications
Sammanfattning : .... LÄS MER