Sökning: "KTH."

Visar resultat 36 - 40 av 9751 avhandlingar innehållade ordet KTH..

  1. 36. Flow instabilities in centrifugal compressors at low mass flow rate

    Författare :Elias Sundström; Mihai Mihaescu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Centrifugal compressor; flow instabilities; rotational flows; rotating stall; surge; compressible Large Eddy Simulation; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : A centrifugal compressor is a mechanical machine with purpose to convert kineticenergy from a rotating impeller wheel into the fluid medium by compressingit. One application involves supplying boost air pressure to downsized internalcombustion engines (ICE). LÄS MER

  3. 37. A study of surface temperature and heat flux estimations in heating processes by solving an Inverse Heat Conduction Problem

    Författare :Patrik Wikström; Wlodzmierz Blasiak; Björn Palm; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : The topic of this thesis is estimation of the dynamic changes of the surface temperatureand heat flux during heating processes by using an inverse method. The local transient surface temperature and heat flux of a steel slab are calculated based on measurements in the interior of the slab. LÄS MER

  4. 38. Growth of fatigue cracks subjected to non-proportional Mode I and II

    Författare :Peter Dahlin; Mårten Olsson; Veronique École; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fatigue crack growth; Mode II overloading; Crack closure; Sequential mixed mode loading; Other engineering mechanics; Övrig teknisk mekanik;

    Sammanfattning : This thesis deals with some aspects of crack growth in the presence of cyclic loading, i.e. fatigue. The cyclic load cases studied here are primary of non-proportional mixed mode type. LÄS MER

  5. 39. Flow measurements using combustion image velocimetry in diesel engines

    Författare :Henrik Dembinski; Hans-Erik Ångström; Paul Miles; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This work shows the in-cylinder airflow, and its effects on combustion and emissions, in a modern, heavy-duty diesel engine. The in-cylinder airflow is examined experimentally in an optical engine and the flow field inside the cylinder is quantified and shown during combustion, crank angle resolved. LÄS MER

  7. 40. Produktionsnoveller : Om Folkforms arbete med Masonite och andra material

    Författare :Anna Holmquist; Sara Ilstedt; Mona Livholts; Johanna Rosenqvist; Andreas Nobel; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; Industrial craftsmanship; design; narrative methodology; practice-led research; material; Masonite; Production Novellas; design research; Folkform; Industriellt hantverk; design; narrativ metod; praktikbaserad forskning; material; Masonite; produktionsnoveller; designforskning; Folkform; Art; Technology and Design; Konst; teknik och design;

    Sammanfattning : A large part of the production today is manufactured so far from the consumer that there is no connection to the production. That there have historically been direct connections between an industry and the people, local traditions and material assets of the place is easily forgotten. LÄS MER