Sökning: "Premixed flames"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Premixed flames.

  1. 1. Fundamental combustion properties of alternative fuels for energy transition

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Yijing Mao; [2020]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Validation and improvement of chemical kinetic modelling require accurate experimental data. The over goal of the present work is to obtain accurate data by using techniques that have been previously implemented in common flames, e.g. LÄS MER

  3. 2. Development of Spectroscopic Measurements for Raman and Thomson Scattering Diagnostics ——Applications in Combustion and Plasma

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Miaoxin Gong; [2019]
    Nyckelord :Raman scattering; Raman spectroscopy; Thomson scattering; stray light suppression; periodic shadowing; high dynamic range imaging; digital micro-mirror device; DMD; laminar flames; combustion; gas discharge; plasma; laser diagnostics; spectrometer; improved spectroscopy; spectroscopy; Physics and Astronomy;

    Sammanfattning : This thesis work concerns methods for improved spectroscopy including stray-light suppression, dynamic range improvement and signal enhancement. These methods were applied in Raman and Thomson- scattering spectroscopy in combustion and plasma. LÄS MER

  4. 3. Tunable diode laser absorptionspectroscopy of atomic potassium in a KOH-seeded flat flame

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Mirjam Eriksson; [2018]
    Nyckelord :;

    Sammanfattning : Potassium (K) is the main ash-forming element released from biomass during thermochemical conversion. A better understanding of K chemistry and monitoring of K species is needed to optimize combustion systems. LÄS MER

  5. 4. Multi-energy well kinetic modeling of novel PAH formation pathways in flames

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Nicola Giramondi; [2016]
    Nyckelord :Polycyclic Aromatic Hydrocarbons; soot; laminar flame; flame calculation; quantum chemical calculation; non-equilibrium kinetic modeling.;

    Sammanfattning : Polycyclic Aromatic Hydrocarbons (PAHs) are harmful by-products formed during combustion of hydrocarbons under locally fuel-rich conditions followed by incomplete combustion. PAHs act as precursors during the formation of soot. PAHs and soot are harmful for human health and legislation limits the emission of unburned hydrocarbons and soot. LÄS MER

  7. 5. Development of optimized Raman Spectroscopy setup for species detection in flames

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Henrik Johansson; [2016]
    Nyckelord :multi-pass; Raman; spectroscopy; species concentration; flames; combustion; Stokes; high-power laser; Physics and Astronomy;

    Sammanfattning : A multi-pass Raman spectroscopy setup, consisting of a measuring cell built as a cavity, using two concave circular mirrors, has been constructed and optimized. As the light reflects between the mirrors, the Stokes Raman signal is enhanced with every pass through the cavity. LÄS MER