Sökning: "prescribed pressures"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden prescribed pressures.

  1. 1. Fluid vibration in piping systems : a structural mechanics approach using exact finite elements

    Författare :Anders Frid; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; real and complex modal analysis; exact finite element mobility method; piping system; rigid-body models; closed compartments; gravity influence; linear continous systems; prescribed pressures; mean flow; anechoic sources; harmonic and transient excitations; Uniaxial fluid vibration; non-proportional damping; velocities and accelerations;

    Sammanfattning : .... LÄS MER

  3. 2. Large eddy simulation using linear eddy sub-grid mixing modeling

    Författare :Salman Arshad; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Linear Eddy Model; Large Eddy Simulation; LES-LEM; Splicing;

    Sammanfattning : As emissions regulations are getting stricter and efficiency requirements of engines are increasing, different concepts to improve combustion are beinginvestigated. For example lean stratified premixed combustion, homogeneous charge compression ignition(HCCI), use of more exhaust gas recirculation (EGR) to reduce NOx etc. LÄS MER

  4. 3. Modelling and simulation of powder pressing with consideration of residual stresses

    Författare :Pär Jonsén; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : In powder metallurgy (PM), production methods are constantly developed and improved to produce component with high precision and strength. Cold uniaxial pressing of powder into a green body is a common process in PM. LÄS MER

  5. 4. Antibiotic use and resistance : patterns, perceptions, policy and the price to pay

    Författare :Sujith John Chandy; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Antibiotic resistance is a major health challenge especially in low and middle income countries such as India. Inappropriate antibiotic use is one important factor contributing to resistance. Strategies to improve use would help contain resistance. LÄS MER

  7. 5. Fracture and stress in powder compacts

    Författare :Pär Jonsén; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : In the field of powder metallurgy (PM), the production methods are constantly developed and improved to produce components with high precision and strength. Cold uniaxial pressing of powder into a green body is a common process in PM. LÄS MER