Sökning: "roughness"

Visar resultat 21 - 25 av 513 avhandlingar innehållade ordet roughness.

  1. 21. Air-pocket transport in conjunction with bottom-outlet conduits for dams

    Författare :Ting Liu; Anders Wörman; James Yang; Staffan Lundström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Air-water two-phase flow; critical velocity; diameter effect; roughness; VOF model; bottom outlet; experiment;

    Sammanfattning : Undesired air entrainment in bottom outlet conduits of dams may cause pressure transients, leading to conduit vibrations, blowback, discharge pulsation and even cavitation, and jeopardize the operational safety. Due to design limitations or construction costs, it is impossible to create an air free environment in a pressurized pipe. LÄS MER

  3. 22. Surface interactions and adsorbate structures : An atomic force microscopy study

    Författare :Goran Bogdanovic; KTH; []
    Nyckelord :atomic force microscope; AFM; cantilever calibration; colloidal probe; surface force; force curve; friciton; hydrophobic; adhesion; roughness; multilayer; silica; cellulose; cationic polyelectrolyte; MAPTAC;

    Sammanfattning : Atomic force microscopy, AFM, was used for studying somecurrent topics in the field of surface and colloid science. Themain topics addressed in this thesis were: the nature of thelong-range attraction between hydrophobic surfaces; slidingfriction behavior for microscopic contacts; and interfacialstructuring of polyelectrolyte-nanoparticle multilayerfilms. LÄS MER

  4. 23. Technical and contractual aspects in winter highway and railway operation and maintenance : a survey of current technical systems and contract forms in Sweden

    Författare :Adel Hirmand Abdi; Björn Birgisson; Rolf Magnusson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; climatology; macroclimate; microclimate; pavement structure; pavement design; roughness; IRI; friction; friction measurement; friction devices; IFI; road grip; winter tyres; studded and non-studded tyres; winter maintenance; winter operation; road climate; RWISS; MDSS; contract theory; contract; contract types; construction contract; maintenance contract; procurement; payment forms; remuneration forms; partnering; Other civil engineering and architecture; Övrig samhällsbyggnadsteknik och arkitektur;

    Sammanfattning : .... LÄS MER

  5. 24. On rating of gravel roads

    Författare :Hossein Alzubaidi; KTH; []
    Nyckelord :Condition; classification; condition estimation; corrugations; deterioration; dust; frost damage; grading; gravel road; maintenance; objective measurement; potholes; rating; roughness; ruts; side drainage; subjective rating; surface drainage;

    Sammanfattning : .... LÄS MER

  7. 25. The Absorption of Laser Light by Rough Metal Surfaces

    Författare :David Bergström; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; absorptance; reflectance; laser; metals; roughness; integrating sphere; Materials science; Teknisk materialvetenskap;

    Sammanfattning : .... LÄS MER