Sökning: "phase boundary"
Visar resultat 1 - 5 av 314 avhandlingar innehållade orden phase boundary.
1. Phase-field modeling of diffusion controlled phase transformations
Sammanfattning : Diffusion controlled phase transformations are studied bymeans of the phase-field method. Morphological evolution ofdendrites, grains and Widmanst\"atten plates is modeled andsimulated.Growth of dendrites into highly supersaturated liquids ismodeled for binary alloy solidification. LÄS MER
2. An Antiferroelectric Twist Grain Boundary Phase
Sammanfattning : .... LÄS MER
3. Phase field modeling of precipitation reactions in miscibility gap systems
Sammanfattning : As a backbone to the cutting tools and rock drilling industry, cemented carbides have been used widely due to their high hardness and wear resistance. Most commercially used cemented carbides contain a hard phase made of Tungsten carbide (WC) and a binder phase which is generally ductile. LÄS MER
4. Air mass boundary identification : improvement of precipitation phase determination in surface based modeling
Sammanfattning : Snowpack properties derived from hydrological models play an important role for many ecological, water resource, and climate applications; such as winter survival of plants, reindeer, small mammals and birds, avalanche hazards, glaciers and polar ice accumulation, growth of sea and lake ices, climate change, snow melt flooding etc. These hydrological models need accurate precipitation phase discrimination schemes to closely portray e. LÄS MER
5. Two Problems in non-linear PDE’s with Phase Transitions
Sammanfattning : This thesis is in the field of non-linear partial differential equations (PDE), focusing on problems which show some type of phase-transition. A single phase Hele-Shaw flow models a Newtoninan fluid which is being injected in the space between two narrowly separated parallel planes. LÄS MER