Sökning: "fracture modelling"

Visar resultat 1 - 5 av 45 uppsatser innehållade orden fracture modelling.

1. 1. Numerical Modelling of Combined Forming and Punching of Sheet Metal for Heat Exchanger Applications

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaper

   Författare :Erik Stålbrand; [2023]
   Nyckelord :Solid Mechanics; Material Modelling; Damage Modelling; Sheet Metal Damage; Punching Simulation; Forming Simulation; Heat Exchanger; Technology and Engineering;

   Sammanfattning : In this work a strategy for numerical simulation of punching during concurrent pressing of stainless steel sheet metal has been investigated accounting for the stress triaxiality and Lode angle parameter. Modelling of the damage evolution of a sheet metal is a useful tool within the field of engineering and materials science, and can provide useful information regarding material capabilities in a design process. LÄS MER

3. 2. Idealised remediation scenario in two small-scale intersecting fractures

   Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

   Författare :Agnes Zúniga Ekenberg; [2022]
   Nyckelord :;

   Sammanfattning : Analysis of mass transport in rock fractures has become increasingly important in underground storage of radioactive materials and remediation of polluted groundwater in fractured rock aquifers. Permeability of rock mass is regulated by present rock fractures, where flow is mainly through the fracture networks. LÄS MER

4. 3. Modelling of Fluid Flow and Contaminant Transport in Fractured Rock : Case Study

   Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

   Författare :Ebba Pegestam; [2022]
   Nyckelord :Contaminant transport; Discrete Fracture Network; Geology; Geohydrology; Groundwater transport; Fracture; Drinking water; Contamination; Föroreningar; flödestransport; spricknätverk; geologi; geohydrologi; grundvattentransport; sprickor; dricksvatten;

   Sammanfattning : Drinking water contamination is a big concern in Sweden and is commonly traced back to being waste from former manufacturing industrial sites. Pollutants in the topsoil can be remediated by several techniques, such as decontamination or excavation but the toxins already enclosed in the bedrock cannot be treated the same and is harder to track possible contaminant pathways. LÄS MER

5. 4. Groundwater Inflow into Fractured Rock Tunnels

   Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

   Författare :Mariam Beydoun; [2022]
   Nyckelord :groundwater inflow; rock tunnel; discrete fracture networks; discrete fracture-matrix; equivalent porous medium; Darcy’s Law; Reynold’s equation; cubic law; grundvatteninflöde; bergtunnel; discrete fracture networks; discrete fracture-matrix; equivalent porous medium; Darcy’s Law; Reynolds equation; cubic law;

   Sammanfattning : Groundwater inflow is a challenge in construction of tunnels in fractured bedrocks since it affects the safety function of tunnels and leads to potential problems in the surrounding environment, such as subsidence, dropdown of the groundwater table. Quantification of groundwater inflow into the tunnel is also important for design of grouting in the construction of the tunnel. LÄS MER

7. 5. Geological characterisation of geophysical lineaments as part of the expanded site descriptive model around the planned repository site for high-level nuclear waste, Forsmark, Sweden

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Aron Bakker; [2021]
   Nyckelord :Forsmark; deformation zones; Svecokarelian; Sveconorwegian; ductile-brittle transition; brittle deformation; mylonite; Earth and Environmental Sciences;

   Sammanfattning : The Swedish Nuclear Fuel and Waste Management Co. (SKB) started a project in 2020 near Forsmark, Sweden with the aim to expand the deformation zone model to encompass the entire catchment area around the planned repository for spent nuclear fuel. LÄS MER