Sökning: "macroscopic modelling"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden macroscopic modelling.

1. 1. The impact of ion drift in a Transcutaneous Electrical Stimulation model

   Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

   Författare :Oscar Tuvesson; Erik Blåe; [2022]
   Nyckelord :TES; neuron activation; ion drift; conductivity; COMSOL; FEM; Technology and Engineering;

   Sammanfattning : A major area of research in neuroscience is the effect of stimulating nerves into activation from extrinsic stimuli. This is commonly done with electric currents and external skin-contact electrodes. LÄS MER

3. 2. Mescape - A probabilistic mesoscopic model for fire evacuation in large gatherings

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Lorenzo Contini; [2022]
   Nyckelord :Human behaviour; crowd evacuation; mesoscopic modelling; hydraulic model; large gatherings; fire safety; performance-based design; quantitative risk assessment; consequence analysis; uncertainty analysis; probabilistic modelling; Technology and Engineering;

   Sammanfattning : This study presents a mesoscopic model that predicts pedestrian evacuation in large gatherings with probabilistic methods. The model is based on a coarse network representation of buildings, where occupants are treated at a different scale according to their location. LÄS MER

4. 3. Adapting FDM 3D-printing for the manufacture of microfluidic devices

   Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

   Författare :Oskar Andersson; [2021]
   Nyckelord :3D-printing; addative manufacturing; fused deposition modelling; FDM; fused filament fabrication; FFF; microfluidics; microfluidic devices; lab-on-a-chip; microchannels; micro-channels; resolution; settings; Technology and Engineering;

   Sammanfattning : Microfluidic devices have so far not seen widespread use, even though they could potentially be cheaper, better and faster than traditional methods. A possible reason for this is the lack of a middle step between one-of-a-kind experimental devices and cheap mass produced devices. LÄS MER

5. 4. Testing macroscopic traffic evacuation models for wildland-urban interface fires

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Adam Ardinge; [2021]
   Nyckelord :WUI-NITY; WUI; V V; traffic evacuation; WUI fire evacuation; simulation model; verification testing; validation testing; Kincade; Technology and Engineering;

   Sammanfattning : This thesis presents the verification and validation testing performed on the evacuation simulation platform WUI-NITY which has the aim of being a simulation tool for the integration of different layers, such as pedestrian, traffic and wildfire with evolving dynamic interactions. The present thesis aims at applying a set of verification tests and validation testing suitable for WUI-NITY with a focus on the traffic component. LÄS MER

7. 5. Micromechanical modelling of creep in wooden materials

   Kandidat-uppsats, Uppsala universitet/Tillämpad mekanik

   Författare :Oskar Falkeström; Kevin Coleman; Malin Nilsson; [2021]
   Nyckelord :Creep; RVE; Homogenization; Honeycomb; Tracheid; Comsol Multiphysics; Micromechanical modelling; Orthotropic; Parametric study; S2 material; Norwegian Spruce; Scots Pine; Cell geometry;

   Sammanfattning : Wood is a complex organic orthotropic viscoelastic material with acellular structure. When stressed, wood will deform over timethrough a process called creep. Creep affects all wooden structureand can be difficult, time-consuming and expensive to measure. For this thesis, a simple computer model of the woodenmicrostructure was developed. LÄS MER