Sökning: "Air bubbles"

Visar resultat 1 - 5 av 45 uppsatser innehållade orden Air bubbles.

  1. 1. The effect of nozzle geometry on bubble formation : Physical modeling by air in a water tank

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Mhd Osman Bernieh; [2023]
    Nyckelord :Nozzle geometry; bubble formation; water tank model; bubble flow; Munstycksgeometri; bubbelbildning; vattentankmodell; bubbelflöde;

    Sammanfattning : The bubble flow is used for different application in steel production and refining processes. It plays in indispensable role in the ladle refining process such as for homogenization and inclusion removal. Hence, it is important to understand the effect of the nozzle outlet geometry on the bubble formation. LÄS MER

  3. 2. Analysis of high-voltage low-current DC/DC converters for electrohydrodynamic pumps

    Kandidat-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Sigge Axelsson; Jonas Gartner; Axel Stafström; [2023]
    Nyckelord :high-voltage; low-current; low-power; DC DC; DC-DC; high-gain; converter; electrohydrodynamic pump; EHD; transformerless converter; Royer-based converter; resonant Royer oscillator; Cockroft-Walton voltage multiplier; CWVM; voltage multiplier; series-connected positive-negative voltage multiplier; SPNVM; planar air-core transformer; planar transformer; high-freqency Royer-based converter; overcurrent protection; LT8331; gallium nitride; GaN; planar PCB-integrated transformers;

    Sammanfattning : Moving parts cause vibrations and tend to wear out. In applications where maintenance is complicated, solutions without moving parts are therefore advantageous. Electrohydrodynamic pumps are such a solution. Instead of mechanical propulsion, they use strong electric fields to induce movement in a dielectric cooling liquid. LÄS MER

  4. 3. INVESTIGATING THE EFFECTS OF PROMOAT BETAGLUCAN ON IMPROVING AND MAINTAINING THE DESIRED STRUCTURE AND PHYSICAL PROPERTIES OF SPONGE CAKES OVER TWO WEEKS OF STORAGE.

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Nienke van Mieghem; [2023]
    Nyckelord :Beta-glucan; Texture profile analysis; structural changes; Sponge cakes; Food technology and nutrition; Technology and Engineering;

    Sammanfattning : This project investigated the impact of beta-glucan on sponge cake's desired texture and physical properties. Sponge cakes with different percentages of Lantmännens PromOat beta-glucan (0.0%, 1.0% and 2. LÄS MER

  5. 4. Evaluating a new hydraulic implementation in LPJ-GUESS for three sites in north Europe

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Carl Holmquist; [2023]
    Nyckelord :Physical Geography and Ecosystem analysis; LPJ-GUESS; drought; sensitivity analysis; evapotranspiration; gross primary production; hydraulic parameters; boreal forest.; Earth and Environmental Sciences;

    Sammanfattning : Drought is projected to increase in frequency and intensity and impacts trees with increased water stress and increased mortality rate. Water stresses can cause hydraulic failure-related mortality or carbon starvation due to tree species having different strategies to deal with water stresses. LÄS MER

  7. 5. Optical Detector for Microfluidics

    Magister-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Carlos Gómez Jiménez; Jaime Gómez Jiménez; [2022]
    Nyckelord :Serial crystallography; Microfluidic device; Optical detector; Particle counting;

    Sammanfattning : This project arose from the need to filter the sampled data and eliminate non-useful information in Serial Crystallography in Microfluidic Device (MFD)by using a portable optical detector placed around the channel. By testing sixteen different configurations, always using an LED as a source and a photodiode as a light sensor, changes in the channel due to the passage of air bubbles were detected. LÄS MER