Sökning: "Theoretical models of thermal"

Visar resultat 11 - 15 av 23 uppsatser innehållade orden Theoretical models of thermal.

1. 11. Theoretical models of thermal conductivity and the relationship with electrical conductivity for compressed metal powder

   Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

   Författare :Sam Tran; Niklas Lindborg; Danilo De Souza Vivedes; Johanna Sjölund; Veronica Enblom; Mattias Sjödin; [2019]
   Nyckelord :;

   Sammanfattning : This Independent Project reviews literature about the effect of pressure and temperature on thermal conductivity in packed beds and its relationship with electrical conductivity. Exploring the relationships between thermal conductivity, porosity and pressure can give useful knowledge for further improvements in manufacturing processes in the field of powder metallurgy. LÄS MER

3. 12. Diffuse correlation spectroscopy for estimation of coagulation thickness : a phantom study

   Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

   Författare :Zeyneb Alsadi; [2019]
   Nyckelord :DCS; Diffuse correlation spectroscopy; Biomedical optics; coagulation; phantom study; coagulation depth; coagulation thickness; diffusion; model; two layer model;

   Sammanfattning : The objective of this preliminary study was to determine the potential of diffuse correlation spectroscopy (DCS) for assessment of coagulation depth. Coagulation of tissue can occur due to a number of different reasons such as thermal or electrical burns or radiofrequency ablation. LÄS MER

4. 13. Influence of grain growth on the thermal structure of inner protoplanetary discs

   Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

   Författare :Sofia Savvidou; [2018]
   Nyckelord :protoplanetary disc; thermal structure; hydrodynamical simulations; grain size distribution; grain growth; opacity; iceline; Physics and Astronomy;

   Sammanfattning : Protoplanetary discs surround young stars for the first few million years after their formation and they are the birthplaces of planetary systems. The thermal structure of the discs is regulated by their dust content and the opacity that it provides. LÄS MER

5. 14. Directly Cooled Windings - Conjugate heat transfer assessment of air-cooled hollow conductor

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

   Författare :Michael Gabassi; [2018]
   Nyckelord :Conjugate heat transfer; hollow conductor; thermal management; direct cooled windings; heat transfer; electrical machines; Technology and Engineering;

   Sammanfattning : The torque capabilities of electrical machines are today limited by magnetic saturation and the ability to transfer thermal loads away from the machine. A solution to thermal management in power turbo-generators involves hollow conductors allowing direct cooling of the heat source thus increasing the power density significantly. LÄS MER

7. 15. Modeling and Simulation of Chemical Reactors Cooled by Thermosyphons

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Marcus Hothar; [2017]
   Nyckelord :Loss Prevention; Runaway reaction; Heat pipe; Thermosyphon; Chemical engineering; Reactor efficiency; Chemistry; Technology and Engineering;

   Sammanfattning : I en teoretisk studie har användbarheten av thermosyphoner för att förbättra säkerheten och effektiviseringen av kemiska reaktorer. Thermosyphoner är en simpel form av en ”heat pipe”, ett ihåligt och slutet rör som är delvis fyllt av en fluid. LÄS MER