Sökning: "numerical co"

Visar resultat 11 - 15 av 104 avhandlingar innehållade orden numerical co.

  1. 11. Numerical Modelling of Transients in Electrical Systems

    Författare :Mihael Zitnik; Marcos Rubinstein; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Physics; Fysik; Electricity; Esp The Study Of Transients and Discharges; elektricitetslära; ssk studiet av transienter och urladdning;

    Sammanfattning : This thesis deals with the numerical modelling of the response of electrical systems to transient surge voltages and currents caused by lightning. Electrical systems, when subjected to high amplitude transients behave in ways very different from its behaviour under normal operating conditions. LÄS MER

  3. 12. Virtual prototyping of vehicular electric steering assistance system using co-simulations

    Författare :Weitao Chen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coupling method; explicit parallel co-simulation; HIL simulation; interface algorithm.; Vehicle and mechatronic system;

    Sammanfattning : Virtual prototyping is a practical necessity in vehicle system development. From desktop simulation to track testing, several simulation approaches, such as co-simulation and hardware-in-loop (HIL) simulation, are used. However, due to interfacing problems, the consistency of testing results may not be ensured. LÄS MER

  4. 13. Numerical and Experimental Studies of Wakefield Accelerators

    Författare :Henrik Ekerfelt; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; laser wakefield acceleration; betatron radiation; ionization-induced trapping; density down-ramp trapping; colliding pulse injection; direct laser acceleration; laser wakefield merging; particle-in-cell simulations; high-intensity optics; Fysicumarkivet A:2019:Ekerfelt;

    Sammanfattning : This thesis is based on work done by the author on the development of laser wakefield accelerators.Wakefield acceleration in plasmas is a promising technique to provide the next generation of accelerating structures and particle beams. LÄS MER

  5. 14. Numerical Study on Combustion Features of Gasified Biomass Gas

    Författare :Xiaoxiang Zhang; Torsten Fransson; Jeevan Jayasuriya; Reza Fakhrai; Truls Liliedahl; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kinetic model; gasified biomass gas; premixed combustion; laminar flame speed; ignition delay time; Biotechnology; Bioteknologi; Energiteknik; Energy Technology;

    Sammanfattning : There is a great interest to develop biomass combustion systems for industrial and utility applications. Improved biomass energy conversion systems are designed to provide better combustion efficiencies and environmental friendly conditions, as well as the fuel flexibility options in various applications. LÄS MER

  7. 15. Numerical Studies of Methanol PPC Engines and Diesel Sprays

    Författare :Mateusz Pucilowski; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Methanol; Partially Premixed Combustion PPC ; spray-wall interaction; piston geometry; multiple injections; ICE; ignition front; diffusion flame; combustion mode; RANS; LES; PPC; Diesel spray;

    Sammanfattning : The global environment suffers from utilizing fossil fuels to powering internal combustion engines (ICE), due to the massive amounts of released CO2. Besides the global impact, the local environments experience high concentrations of harmful pollutants such as NOx, CO, soot and particulate matter (PM). LÄS MER