Avancerad sökning

Visar resultat 1 - 5 av 8 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Study of Triply Periodic Minimal Surfaces for Heat Transfer Applications

    Master-uppsats, Uppsala universitet/Institutionen för materialvetenskap

    Författare :María Xuan Celaya Granados; [2023]
    Nyckelord :;

    Sammanfattning : In the pursuit of enhancing heat exchanger efficiency, several heat transfer- enhancing strategies are employed. The traditional methods include surface vibrations, microchannels, and integration of vortex generators. Additionally, new solutions are being studied, taking advantage of other relevant improve- ments in the engineering field. LÄS MER

  3. 2. Broad ion beam cross-sectioning, microscopy, and image analysis of battery electrode morphology

    Master-uppsats, Lunds universitet/Industriell Produktion

    Författare :Aamer Mohammed Saleem Siddiqui; [2022]
    Nyckelord :BIB; SEM; Li Plating; Particle cracking; Tortuosity; Image analysis; Technology and Engineering;

    Sammanfattning : Lithium-ion batteries (LiB) are witnessing an increasing demand for electric vehicles. It provides a sustainable energy storage solution that is more efficient and ecofriendly than the fossil fuels. LÄS MER

  4. 3. X-ray imaging of water flow through soil

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Lorenzo Garbari; [2020]
    Nyckelord :infiltration; tomography; soil structure; soil porosity; wetting front; x-ray;

    Sammanfattning : In this study a laboratory experiment on preferential flow was conducted with the aim to quantify the importance of water repellency, soil structure and irrigation rate on water infiltration into soil. To do so, the study was conducted as follows: (a) comparison between the wetting fronts of the irrigations done on the same sample; (b) the tortuosity of the wetting fronts, this was analysed calculating a tortuosity index; (c) the average infiltration velocity and (d) a visual comparison between the 3D images. LÄS MER

  5. 4. Evaluating the effective oxygen diffusion coefficient in blends of till and green liquor dregs (GLD) used as sealing layer in mine waste covers

    Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Anna Virolainen; [2018]
    Nyckelord :Oxygen diffusion; green liquor dregs; mine waste; covers; sealing layers;

    Sammanfattning : Dry covers can be used to limit the generation of acid mine drainage from sulphidic mine waste exposed to air and water. For the covers to act efficiently a high degree of saturation should be maintained in the cover, as the diffusion of oxygen is substantially reduced in water compared to that in air. LÄS MER

  7. 5. Visualization and Quantification of Helical Flow in the Aorta using 4D Flow MRI

    Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

    Författare :Filippa Gustafsson; [2016]
    Nyckelord :Helical flow; Helicity density; LNH; 4D Flow MRI; geometry of the aorta;

    Sammanfattning : Due to the complex anatomy of the heart, heart valves and aorta, blood flow in the aorta is known to be complex and can exhibit a swirling, or helical, flow pattern. The purpose of this thesis is to implement methods to quantify and visualize both the speed of helicity, referred to as the helicity density, and the direction of helicity, which is measured by the localized normalized helicity. LÄS MER