Sökning: "numerical"

Visar resultat 1 - 5 av 2682 avhandlingar innehållade ordet numerical.

  1. 1. On dental ceramics and their fracture a laboratory and numerical study

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Wen Kou; Umeå universitet.; [2010]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Dental ceramics; Finite element analysis; Fixed partial denture; Fracture; Numerical modeling; Surface treatment; ODONTOLOGY Biomaterials; ODONTOLOGI Biomaterial; odontologi; Odontology;

    Sammanfattning : Background Surface treatments and irregularities in the surfaces may affect the fracture of ceramics. The effects of various treatments on the surface texture of different types of ceramic cores/substructures was therefore qualitatively, quantitatively and numerically evaluated. LÄS MER

  2. 2. Instability in Settling Fibres A Numerical Study

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Feng Zhang; KTH.; KTH.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bre suspensions; sedimentation; instability; mixture model; point-particle mode;

    Sammanfattning : Sedimenting suspensions exist in a varity of natural phenomena and industrial applications. It is already observed in experiments that the dilute fibre suspensions experience a concentration instability under gravity at low Reynolds numbers. Initially well-mixed suspensions become inhomogeneous and anisotropic due to this instability. LÄS MER

  3. 3. Numerical Accident Reconstructions A Biomechanical Tool to Understand and Prevent Head Injuries

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Madelen Fahlstedt; KTH.; [2015]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Head injuries; Accident Reconstruction; Finite element analysis; Injury prevention; Helmet; Cyclist; Pedestrian; Epidemiology; Applied Medical Technology; Tillämpad medicinsk teknik;

    Sammanfattning : Traumatic brain injuries (TBIs) are a major health and socioeconomic problem throughout the world, with an estimated 10 million deaths and instances of hospitalization annually. Numerical methods such as finite element (FE) methods can be used to study head injuries and optimize the protection, which can lead to a decrease in the number of injuries. LÄS MER

  4. 4. Numerical Quantum Dynamics

    Detta är en avhandling från Uppsala University

    Författare :Emil Kieri; Uppsala universitet.; Uppsala universitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Scientific Computing; Beräkningsvetenskap;

    Sammanfattning : We consider computational methods for simulating the dynamics of molecular systems governed by the time-dependent Schrödinger equation. Solving the Schrödinger equation numerically poses a challenge due to its often highly oscillatory solutions, and to the exponential growth of work and memory with the number of particles in the system. LÄS MER

  5. 5. Turbulent jets in confined spaces application in mixing ventilation: experimental and numerical studies

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Taghi Karimipanah; Högskolan i Gävle.; [1996]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbulent; wall jet; impinging jet; free jet; confinement effect; pressure; throw; experimental; numerical; corner; momentum; mixing ventilation;

    Sammanfattning : The basis of mixing ventilation is the airflow supply to the room by means of jets initiatedfrom the ventilation diffusers. To avoid the draught problem, the design of mixing ventilationmakes uses the throw term, which is defined as the distance to the supply air terminal inwhich the jet centreline mean velocity is decreased to a given value. LÄS MER