Sökning: "axial length"

Visar resultat 1 - 5 av 59 avhandlingar innehållade orden axial length.

  1. 1. Experimental Studies on the Aeroacoustics of Low-Speed Axial Fans

    Författare :Michail Vourakis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-speed axial fans; electric fans; experimental; laser Doppler anemometry; low-pressure axial fans; cooling fan; aeroacoustics; rotating ring;

    Sammanfattning : Low-speed axial fans are used in thermal management systems of internal combustion and electric vehicles. These systems are compact, cost-effective, all while addressing safety concerns. On the downside, fan operation leads to flow induced noise. LÄS MER

  3. 2. Analysis of an innovative design of an axial flux Torus-machine

    Författare :Maddalena Cirani; KTH; []
    Nyckelord :;

    Sammanfattning : The high compactness of axialflux permanent magnet (AFPM) machines compared with theconventional induction, DC and radial flux permanent magnet(RFPM) machines, renders this machine-topology particularlysuitable to be integrated in a system for hybrid electricvehicles (HEVs). Indeed, due to the limited space inside thevehicle, the considerable reduction in volume and weightoffered by AFPM machines is of major importance. LÄS MER

  4. 3. Finite element procedures for crack path prediction in multi-axial fatigue

    Författare :Dimosthenis Floros; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fracture mechanics; Configurational forces; Mixed-mode; Numerical simulation; Rolling contact fatigue; Plasticity;

    Sammanfattning : Rolling Contact Fatigue (RCF) cracks in rails are among the most detrimental railway track defects regarding reliability and cost. The cracks typically grow in shear mode up to a certain length at which they might arrest or kink into a more tensile-driven growth. LÄS MER

  5. 4. Nonionic Microemulsions: Dependence on Oil Chain Length of the Surfactant Curvature Elastic Properties

    Författare :Joakim Balogh; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Light Scattering; NMR relaxation NMR self-diffusion; SANS contrast variation and contrast matched studies; saddle play modulus; made by C12E5; Nonionic microemulsion; balanced microemulsion; Fysikalisk kemi;

    Sammanfattning : The aim with this thesis has been to increase the knowledge about nonionic microemulsions and how they behave with increasing temperature. I have studied Nonionic Microemulsions made from C12E5, water and oil, with predominally hexadecane as oil, but also with octane, decane, dodecane and tetradecane as oil. LÄS MER

  7. 5. Biomechanical and Clinical Aspects on Fixation Techniques in the Cervical Spine

    Författare :Thomas Henriques; Claes Olerud; Sune Larsson; Dieter Grob; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; Biomechanics; Atlanto-axial fusion; Distractive flexion injuries; cervical spine; adjacent level motion; Medicin; Dermatology and venerology; clinical genetics; internal medicine; Dermatologi och venerologi; klinisk genetik; invärtesmedicin;

    Sammanfattning : The present work is analyzing the general biomechanical aspects of fixation techniques in the upper and lower cervical spine along with clinical implications.The in vitro biomechanical properties of five different posterior atlanto-axial fixation techniques are compared. LÄS MER