Sökning: "Eulerian-Lagrangian model"
Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Eulerian-Lagrangian model.
1. Eulerian-Lagrangian modeling of particle motion in exhaust gas aftertreatment systems
Sammanfattning : In the work to design and optimize new aftertreatment system devices for NOx reduction and particulate matter removal in lean engine exhaust (such as diesel exhaust), it is of great help to be able to perform quick, robust and reliable computer simulations of system performance. A suitable platform for such simulations is Computational Fluid Dynamics (CFD) software. LÄS MER
2. A Realizable Hybrid Mixture-Bubble Model for Cavitating Flows
Sammanfattning : Cavitating multi-phase flows include an extensive range of cavity structures with different length scales, from micro bubbles to large sheet cavities that may fully cover the surface of a device. To avoid high computational expenses, incompressible transport equation models are considered a practical option for simulation of large scale cavitating flows, normally with limited representation of the small scale vapour structures. LÄS MER
3. Numerical Study of Dispersed Two-phase Flows
Sammanfattning : This thesis considers the numerical study of dispersed two-phase flows.Numerical simulations have been done to investigate the particle trasportation/dispersion effect in turbulent two-phase flows. Both turbulent bubble/water flows and turbulent particle/air flows are studied. LÄS MER
4. Numerical study of flows related to aerated stirred tanks
Sammanfattning : The overall purpose with this work is to investigate the bubbly flow in a aerated stirred tank using numerical simulations. Aerated stirred tanks are commonly used in chemical processes for producing for example insulin and antibiotics. LÄS MER
5. CFD modeling of biomass combustion and gasification in fluidized bed reactors
Sammanfattning : Biomass is an environmentally friendly renewable energy source and carbon-neutral fuel alternative. Direct combustion/gasification of biomass in the dense particle-fluid system is an important pathway to biomass energy utilization. LÄS MER