Sökning: "combustion chamber"

Visar resultat 6 - 10 av 91 uppsatser innehållade orden combustion chamber.

  1. 6. Simulation of Combustion in a Hybrid Rocket Engine

    Master-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Oscar Andersson; [2023]
    Nyckelord :Thesis; Hybrid Rocket Engine; CFD; computational fluid dynamics; combustion;

    Sammanfattning : A numerical investigation on the combustion mechanics of a hybrid rocket engine is performed through unsteady Reynolds-averaged Navier-Stokes simulation. The hybrid rocket engine model is based on an experimental laboratory scale engine design operating on GOX and HDPE as a propellant. LÄS MER

  3. 7. 1D Simulation of Hydraulic Cam Phaser System Utilized in Heavy Duty Vehicles : An Investigation on Attenuation of Phase Oscillations from Cam Torque Disturbances

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Johan Germundsson; [2023]
    Nyckelord :master thesis; cam phaser; simulation; 1D-simulation; GT-SUITE; GT-ISE; Gamma Technologies; oil aeration; oscillations; heavy-duty; engine; phaser; cam torque; stability; cam phaser system; Scania; Scalia CV;

    Sammanfattning : Cam phasers allow improvements to the efficiency and emissions of internal combustion engines. The usage of hydraulic vane type cam phasers for heavy-duty applications have shown problems with oscillations during testing at Scania CV. To investigate the root cause of the oscillations a detailed 1-d simulation model has been created. LÄS MER

  4. 8. Design of a modular small-scale PMMA/Air hybrid rocket research engine

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Gustaf von Platen; [2023]
    Nyckelord :hybrid rocket engine; PMMA combustion; rocket engine design; combustion diagnostics; rocket engine; regression rate; preliminary design definition; hybrid rocket engine simulation; gaseous oxidizer; transparent rocket engine;

    Sammanfattning : Rocket propulsion using the hybrid-propellant scheme is a technology that offers much promise in applications where high-performance liquid rocket engines are deemed too complex and solid rocket motors are considered to lack performance or safety. However, despite extensive research, there is still a lack of knowledge in the theoretical aspects of hybrid rocketry, especially in the area of fuel-oxidizer mixing and fuel regression rate. LÄS MER

  5. 9. Development and Analysis of a Gaseous Hydrogen-Oxygen Rotating Detonation Combustor

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Birgir Steinn Hermannsson; [2022]
    Nyckelord :;

    Sammanfattning : Theory suggests that more efficient rocket propulsion can possibly be achievedby utilizing a pressure-gain detonative combustion process instead of conventional deflagration combustion. To demonstrate this, rotating detonation engines that sustain one or several detonation waves in an annular enclosure havebeen a subject of research for decades. LÄS MER

  7. 10. Predictive Study of Flame status inside a combustor of a gas turbine using binary classification

    Master-uppsats, Linköpings universitet/Institutionen för datavetenskap

    Författare :Sreenand Sasikumar; [2022]
    Nyckelord :Binary Classification; Random Forest; SVM; XGBoost; Logistic Regression; Extra-trees; GasTurbine; Flame Detection;

    Sammanfattning : Quick and accurate detection of flame inside a gas turbine is very crucial to mitigaterisks in power generation. Failure of flame detection increases downtime and maintenancecosts and on rare occasions it may cause explosions due to buildup of incombustible fuel inside the combustion chamber. LÄS MER