Essays about: "tripping"

Showing result 1 - 5 of 11 essays containing the word tripping.

  1. 1. On intermittency in the turbulent asymptotic suction boundary layer

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Edoardo Foschi; [2023]
    Keywords : Turbulence; turbulent boundary layer; intermittency; numerical simulation; DNS; tripping; suction;

    Abstract : This thesis presents a series of direct numerical simulations (DNS) performed in order to understand the discrepancy in the literature regarding turbulent asymptotic suction boundary layers (TASBLs) at low Reynolds numbers. The hypothesis to be tested is that the main reason for higher turbulence intensities observed in experiments compared to DNS is that the latter exhibits intermittent patches of laminar flow, developing both temporally and spatially. READ MORE

  3. 2. Line Distance Protection in Power Grids with Variable Renewable Energy Sources : An Investigation on Time Domain Distance Protection via Parameter Estimation

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

    Author : Ludvig Ringaby; [2023]
    Keywords : Distance protection; Power system protection; Time domain distance protection; Differential Equation Algorithm; Variable renewable energy; IBR; Distansskydd; Skyddssystem i elkraftsystem; Tidsdomän distansskydd; Differentialekvationsalgoritm; Variabel förnybar energi;

    Abstract : Variable renewable energy sources typically connect to the power grid through power electronic interfaces. Increased use of such sources can cause issues for conventional distance protection. READ MORE

  4. 3. Tests of Series Arcing and Arc Fault Detection Devices in Low Voltage Systems

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

    Author : Ghazal Al Qabbani; [2021]
    Keywords : ;

    Abstract : Unwanted electrical arcs are a concern in fire and electrical equipment safety. Arcs in electrical systems can be categorized into two main groups, traditionally called: Series and parallel arc faults, or more recently called low current and high current arc faults. READ MORE

  5. 4. Förekomst av smärtbeteende hos ston under de sista två veckorna av dräktigheten : en pilotstudie

    University essay from SLU/Dept. of Anatomy, Physiology and Biochemistry

    Author : Sandra Sofia Lindlöf Äikäs; [2021]
    Keywords : häst; fölning; smärtbeteende; tidsbudget;

    Abstract : Det kan vara en spännande process att ha ett dräktigt sto och invänta en fölning. Den exakta tidpunkten för fölningen är oftast svår att bedöma vilket leder till långa nätter med fölvaka. När tidpunkten för fölning kommer kan det plötsligt uppstå komplikationer som kräver snabba åtgärder. READ MORE

  6. 5. Insect pollination of faba beans, Vicia faba : the abundance and foraging behaviour of different pollinators and their effect on crop yield

    University essay from SLU/Dept. of Ecology

    Author : Ylva Johansson; [2020]
    Keywords : honeybee; Apis mellifera; bumblebees; B. pascuorum; B. hortorum; B. lucorum; B. terrestris; B. ruderatus; B. cryptarum; B. distinguendus; B. lapidarius;

    Abstract : Faba beans, Vicia faba is known as a self-pollinating crop, however significant yield increases have been found in plants visited by honeybees and bumblebees. The bees either make positive visits, entering the flower and transferring pollen between different flowers resulting in cross-pollination, or negative visits, piercing the flower to “steal” nectar or collect nectar from extrafloral nectaries. READ MORE