Sökning: "laminar flames"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden laminar 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. 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

  5. 4. Thermometry using OH laser-induced fluorescence excitation spectra: A feasibility study

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Matematisk fysik

    Författare :Elin Malmqvist; [2013]
    Nyckelord :laser-induced fluorescence; LIF; temperature; temperature measurements; OH; Physics and Astronomy;

    Sammanfattning : In this thesis, rotational spectra, acquired through laser-induced fluorescence (LIF) on the OH-radical, were used to evaluate temperatures in different combustion environments. By comparing experimental spectra with theoretical ones of known temperature, the temperature can be determined. LÄS MER

  7. 5. Measuring ammonia: Development and application of measurement techniques for the detection of ammonia

    Master-uppsats, Lunds universitet/Fysiska institutionen

    Författare :Odd Magnar Hole; [2013]
    Nyckelord :images; imaging; PFLIF; Detection; Laser; Two-photon; 2-photon; SCR; LIF; Ammonia; Physics and Astronomy;

    Sammanfattning : Ammonia (NH3) is an important chemical both as a chemical precursor and in its own right. It is therefore of practical importance to be able to visualize ammonia gas especially when ammonia is present in combustion or flue-gas environments. LÄS MER