Sökning: "bubble formation"

Visar resultat 6 - 10 av 23 uppsatser innehållade orden bubble formation.

1. 6. Burning material behaviour in hypoxic environments: An experimental study examining fire dynamics of composite materials in vitiated conditions

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Robert Bray; [2020]
   Nyckelord :ORS; Fire engineering; hypoxic; polymers; Technology and Engineering;

   Sammanfattning : The progression of fire safety research has contributed to improving the guiding principles of standardised building design. Research making use of pure materials, once common in homes and workplaces, are less relevant as such materials are no longer as prevalent. LÄS MER

3. 7. Fluid/Material Coupled Numerical Analysis of Single Bubble Collapse Near a Pit on a Wall

   Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

   Författare :Daiki Makii; [2020]
   Nyckelord :Bubble Dynamics; Cavitation Erosion; Numerical Analysis; Fluid Material Coupled Numerical Method; Homogeneous Model; Elastic Body Material; Erosion Pit;

   Sammanfattning : In order to elucidate the progression mechanism of cavitation erosion, the behaviors of a single cavitation bubble collapse near a pit on a wall and both the resulting pressure wave in fluid and stress wave in material are investigated in detail. To find out the mechanism of cavitation erosion, many experimental studies on the bubble collapse behavior near a flat rigid wall and the resulting material damage have been conducted so far. LÄS MER

4. 8. The Effect of Whole-Body Vibration Preconditioning on High-Altitude-Induced Venous Gas Emboli

   Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Författare :Tommaso Tuci; [2020]
   Nyckelord :Whole-Body Vibration; Vibration; High-Altitude Aviation; Venous Gas Emboli; VGE; Decompression sickness; DCS;

   Sammanfattning : Decompression sickness (DCS) is a risk associated with high-altitude aviation and diving. During these activities, decompression may lead to supersaturation of inert gas dissolved in bodily tissues and subsequently activate bubble formation in various bodily tissues, including in venous blood, known as venous gas emboli (VGE). LÄS MER

5. 9. Fouling Dependency of Air in Dairy Processing

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Erik Lorin; [2018]
   Nyckelord :Fouling; Dairy; UHT; Bubble; Bubble induced fouling; Drying; THE; Dairy Processing; Processing; Bubble Nucleation; Differential Pressure; Oxygen sensors; chemical engineering; kemiteknik; Agriculture and Food Sciences; Chemistry; Technology and Engineering;

   Sammanfattning : In this master thesis project, the formation of fouling on heat exchanger surfaces in dairy processing and mainly the influence of air was examined. Based on prior experimental findings regarding the influence of air bubbles in combination with calculations based on solubility properties of air in milk, a hypothesis was stated. LÄS MER

7. 10. Experimental Investigation Of The Air-Water Flow Properties In The Cavity Zone Downstream A Chute Aerator

   Uppsats för yrkesexamina på avancerad nivå,

   Författare :Ebba Wargsjö; Albin Hedehag Damberg; [2017]
   Nyckelord :Air bubble entrainment; chute aerators; aerators; air concentration; cavitation; cavitation damage; cavitation bubbles; bubble frequency; scale effects;

   Sammanfattning : Chute aerators are widely used in spillways to avoid cavitation damage. When the water flow passes the aerator, two jets form – upper and lower jet. The purpose of this thesis has been to study the effects from the aerator by conducting experiments in a model with a flow depth large enough to ensure that the upper and lower jet remain separated. LÄS MER