Sökning: "mechanical dissipation"

Visar resultat 1 - 5 av 152 avhandlingar innehållade orden mechanical dissipation.

  1. 1. An Experimental Study of Reynolds Stress Closures in Shear Free and Weakly Sheared Turbulence

    Författare :Dag Aronson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; turbulence modelling; dissipation measurements; Reynolds stress closures; isotropic turbulence; anisotropic dissipation rate tensor; hot-wire anemometry; wall proximity effects; pressure strain rate correlations;

    Sammanfattning : The objective of this thesis work is to obtain data enabling evaluation of closure hypotheses used in the Reynolds stress transport (RST) equations. Special attention has been devoted to studies of flow fields with shear free and weakly sheared turbulence. LÄS MER

  3. 2. Models and mechanisms of dissipation in bolted joints

    Författare :Sten Henrik Vilhelm Wentzel; Mårten Olsson; Ulf Olofsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : .... LÄS MER

  4. 3. Numerical analysis of coalescence-induced jumping droplets on superhydrophobic surfaces

    Författare :Konstantinos Konstantinidis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; jumping droplets; immersed boundary; CFD; surfaces; superhydrophobic; contact angle; VOF; coalescence; self-cleaning; wetting; hysteresis;

    Sammanfattning : Bio-inspired superhydrophobic surfaces are used in numerous technological applications due to their self-cleaning ability. One of the several mechanisms reported in literature and responsible for self-cleaning is the phenomenon of coalescence-induced jumping of droplets from such surfaces. LÄS MER

  5. 4. Exergy Evaluation of Engine Operations : Combustion Process to Exhaust Flow

    Författare :Beichuan Hong; Andreas Cronhjort; Mihai Mihaescu; Sundar Rajan Krishnan; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal efficiency; Exergy analysis; Marine engine; Lean-burn combustion; Pulsating flow measurement; Pitot tube; Sensitivity analysis; Energy and exergy losses; Termisk verkningsgrad; Exergianalys; Marinmotor; Magertbränningsförbränning; Pulserande flödesmätning; Pitotrör; Känslighetsanalys; Energiförluster och exergiförluster; Machine Design; Maskinkonstruktion; Energiteknik; Energy Technology;

    Sammanfattning : Transitioning the transport sector to clean energy sources is crucial for mitigating greenhouse gas emissions and achieving carbon neutrality. A collaborative solution, combining both electric vehicles and combustion engines using renewable fuels, may prove more effective than competitive ones. LÄS MER

  7. 5. Some aspects on the energy dissipation during canter chipping

    Författare :Helen Lusth; Per Gradin; Lisbeth Hellström; Per Isaksson; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER