Sökning: "one-dimensional modelling"

Visar resultat 1 - 5 av 29 uppsatser innehållade orden one-dimensional modelling.

1. 1. Computational modelling of quorum sensing using cascade delay

   Kandidat-uppsats,

   Författare :Nils Axelsson; David Mårsäter; [2022]
   Nyckelord :Quorum sensing; URDME;

   Sammanfattning : The scope of this project was to implement a quorum sensing model capable of synchronised oscillations from the article ”A synchronized quorum of genetic clocks” [1] in the software framework URDME [2]. The model consists of a system of partial differential equations describing time delayed and coupled biochemical reactions. LÄS MER

3. 2. Sediment Transport and Erosion in Viskan River, South Sweden

   Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

   Författare :Siyuan Wang; [2022]
   Nyckelord :HEC-RAS; cross section; erosion; sediment transport; deposition; Technology and Engineering;

   Sammanfattning : This master thesis study presents the results of sediment transport analysis along Viskan, located in south Sweden. The main processes cover building a hydrodynamic model, studying parameters that define sediment transport, modelling sediment transport within the river, mapping out erosive stretches and comparing to observed eroded locations, and finally comparison of different transport functions how they influence the results. LÄS MER

4. 3. Beyond Mean-Field Description of Bose-Einstein Condensate

   Kandidat-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Författare :Daniel Larsson Persson; [2021]
   Nyckelord :Bose-Einstein condensate; BEC; dilute; non-uniform; quantum depletion; second quantisation; mean field; mean-field approximation; the Gross-Pitaevskii equation; Gross-Pitaevskii; perturbation theory; many-body perturbation theory; Rayleigh-Schrödinger perturbation theory; Rayleigh-Schrödinger; Epstein-Nesbet perturbation theory; Epstein-Nesbet; quantum ring; Physics and Astronomy;

   Sammanfattning : This thesis work is on the theoretical description of dilute Bose-Einstein condensates (BEC) that are non-uniform, meaning that more than one single-particle state is occupied. This phenomenon is usually called quantum depletion. LÄS MER

5. 4. Evaluation of bank erosion and stability analysis along Rönne å at Ängelholm, Sweden

   Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

   Författare :Arnold Mate Kalimukwa; Abuzack Juma Mohamed; [2021]
   Nyckelord :HEC-RAS; BSTEM; cross section; erosion; sediment transport; deposition; bank stability; safety factor; Technology and Engineering;

   Sammanfattning : This master thesis report presents the results of evaluation of bank erosion and stability analysis along Rönne å (river) at Ängelholm, located in south-west of Sweden within Scania. The main objectives cover building a hydrodynamic model, studying parameters that define sediment transport, modelling sediment transport within the river, mapping out erosive stretches and comparing to earlier observational study conducted by Norconsult in 2013, and finally conducting analysis of bank stability in most erosive stretches. LÄS MER

7. 5. Determination of Mass- and Heat Transfer Coefficients for Computer Modelling of Pharmaceutical Freeze-Drying

   Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

   Författare :Linnea Gustafsson; [2021]
   Nyckelord :Freeze-drying; Mass- and Heat Transfer; Pharmaceutical production; Simulation; MATLAB; Pharmaceutical technology; Technology and Engineering;

   Sammanfattning : This thesis work deals with the determination of mass- and heat transfer coefficients for pharmaceutical vial freeze-drying and the one-dimensional steady state computer modelling of primary drying. The overall heat transfer coefficient K_V for the vial/freeze-dryer system was successfully determined using a gravimetric method. LÄS MER