Essays about: "existing tunnel"

Showing result 11 - 15 of 40 essays containing the words existing tunnel.

  1. 11. An Innovative In-Tunnel Seismic Study for Sustainably Extracting Apatite Ore at the Siilinjärvi Mine, Eastern Finland

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Anna Donczew; [2019]
    Keywords : in-tunnel seismic; reflection seismic; traveltime tomography; carbonatites; shear zones; Siilinjärvi; tunnelseismik; reflektionsseismik; restidstomografi; karbonatiter; skjuvzoner; Siilinjärvi;

    Abstract : Siilinjärvi located in eastern Finland is presently the only phosphate mine with significant phosphorus production in western Europe. Phosphate rock and phosphorus are known as a critical raw material for the European Union due to their economic importance and being prone to the supply risks. READ MORE

  3. 12. Key factors for introducing an improved climate adaptation for engineers and contractors working in multidisciplinary infrastructure projects

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Gustafsson Sandra; [2018]
    Keywords : ;

    Abstract : Climate change poses a critical threat to future development and is a reality that affects our society, our way of thinking and acting. The international body has taken common position against climate change in the expression of, inter alia, the Paris Agreement on climate change and the Sustainable Development Agenda. READ MORE

  4. 13. Transonic Flutter for aGeneric Fighter Configuration

    University essay from KTH/Flygdynamik

    Author : Axel Bååthe; [2018]
    Keywords : Flutter; Aeroelasticity; Transonic; Unsteady Aerodynamics; Doublet-Lattice Method; Full-Potential Equation; PK-Method;

    Abstract : A hazardous and not fully understood aeroelastic phenomenon is the transonic dip,the decrease in flutter dynamic pressure that occurs for most aircraft configurationsin transonic flows. The difficulty of predicting this phenomenon forces aircraft manufacturersto run long and costly flight test campaigns to demonstrate flutter-free behaviourof their aircraft at transonic Mach numbers. READ MORE

  5. 14. Study of The Effect of Convective Heat Transfer on Cooling of Overhead Line Conductors Based on Wind Tunnel Experimental Results

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Wadih Naim; [2018]
    Keywords : heat balance; overhead conductor; convective cooling; dynamic line rating DLR ; värmebalans; luftledare; konvektiv kylning; dynamisk linjestorlek DLR ;

    Abstract : It is important to keep an overhead power line within rated operating conditions. Thus,an accurate prediction of the conductor's thermal and electrical behavior leads to an increasein reliability and eciency. Under DLR operation, the current rating is adjustedbased on ambient weather and solar conditions to allow for dynamic line loading. READ MORE

  6. 15. Validation of a vortex panel method for aerodynamics and aero-elasticity of Wind Turbine

    University essay from KTH/Kraft- och värmeteknologi

    Author : Antoine Thibierge; [2018]
    Keywords : ;

    Abstract : Ardema3D is a new type of vortex free model code that can simulate wind turbines. This code has been developed in order to replace the state of the art model, the blade element momentum (BEM). READ MORE