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  • Experimental Study of the Impact of Physical and Chemical Properties on Smoldering Combustion in Natural Fuels

    Creator:
    Smucker, Benjamin
    Abstract:
    Smoldering combustion in wildland fires is difficult to extinguish, can transition to flaming combustion, and produces a significant amount of pollutants. It is necessary to understand parameters controlling smoldering in order to help predict the smoldering behavior and potentially mitigate these hazards. The wide variety of natural fuels that occur...
    Resource Type:
    Dissertation
    Full Text:
    Natural Fuels Abstract approved: David L. Blunck Smoldering combustion in wildland fires is difficult to

  • Influence of Two-Phase Fuel on Detonation Behavior

    Creator:
    Barlow, Dustin
    Abstract:
    Detonation combustion is of great interest for propulsion devices because of its potential to increase thermodynamic efficiency, reduce the weight of current gas turbine engines, and rapidly accelerate to high Mach numbers. Detonation engines might also have the ability to decrease harmful exhaust products from traditional propulsion methods. In order...
    Resource Type:
    Masters Thesis
    Full Text:
    : ____________________________________________________ David L. Blunck Detonation combustion is of great interest for propulsion devices

  • Identification of Physical and Chemical Processes on Ignition and Burning of Live Fuels

    Creator:
    Fazeli, Hamid
    Abstract:
    Wildland fire refers to an unpredictable and uncontrollable fire that happens in wildland areas. Regardless of the beneficial impacts of wildland fires on ecosystems, the destructive impacts of wildfires on air quality, economy, public health, etc. are considerable. An essential goal in the fire community is that the wildland fires...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: David L. Blunck Wildland fire refers to an unpredictable and uncontrollable fire

  • Ignition of Fuel Beds by Firebrands

    Creator:
    Bean, Derek R.
    Abstract:
    The severity of wildfires around the globe is increasing. At the same time, urban development is expanding outward into areas where severe fires occur. There is an increased risk of home loss to fires in areas where severe fires and urban expansion meet. Ignition of homes or nearby fuel is...
    Resource Type:
    Dissertation
    Full Text:
    : Sensitivities of Porous Beds and Plates to Ignition by Firebrands Derek Bean, David L. Blunck My contributions

  • Identifying the Effects of Combustion Products, Turbulent Fluctuations, and Delivered Energy on Ignition Characteristics of Forced Ignition of Jet-A/air Mixtures

    Creator:
    Teope, Kaz I.
    Abstract:
    The operation of gas turbine engines depends on the reliable ignition of fuel/air mixtures. Gas turbine engines are commonly used as commercial and military aviation power plants. However, consistent ignition within gas turbine engines is still a problem, especially for more challenging operating conditions such as emergency operations. This work...
    Resource Type:
    Dissertation
    Full Text:
    Characteristics of Forced Ignition of Jet-A/air Mixtures Abstract approved: David L. Blunck The operation of

  • The Influence of Fuel Characteristics on Smoldering Behavior through Porous Fuels

    Creator:
    Ross, Andrew H.
    Abstract:
    Smoldering can play a dangerous role in the ignition and spread of wildfires. Naturally occurring fuels consist of multiple layers of organic materials with varying particle sizes due to differences in decomposition stages with fuel depth, yet the influence of particle size on burning behavior is poorly understood. Previous research...
    Resource Type:
    Masters Thesis
    Full Text:
    : __________________________________________________ David L. Blunck Smoldering can play a dangerous role in the ignition and spread of

  • Comparison of the Accuracy and Applicability of Forebody Wake Effect Models for Parachute System Design

    Creator:
    Kemling, Gabriel H. and Blunck, David L.
    Abstract:
    The forebody wake effect (FWE) is important to consider when designing parachute systems because it can affect parachute performance. Parachutes work by altering the aerodynamic properties of an attached forebody to control a descent. The FWE can reduce parachute drag, causing the system to descend faster than desired. This drag...
    Resource Type:
    Research Paper
    Full Text:
    Gabriel H. Kemling1 and David L. Blunck2 Oregon State University, Corvallis, Oregon, 97330, United States

  • Effects of Residual CO2 and N2 on Detonation Velocity and Detonation Limits

    Creator:
    Glad, Harley R.
    Abstract:
    Detonation combustion has gained interest throughout the years because of its potential to increase thermodynamic cycle efficiency when compared to deflagration based cycles. The expected benefits result from a pressure gain during the combustion process instead of a pressure drop, as observed for deflagrations. The implementation of detonations can be...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: _____________________________________________________________________ David L

  • Effects of thermal stressing on the turbulent flame speed of jet fuel

    Creator:
    Alkhalifa, Ammar M.
    Abstract:
    Gas turbine engines for propulsion applications can use fuel as a coolant, exposing the fuel to high temperatures well within the ranges associated with thermal decomposition. Species produced as a result of these processes have been shown to correlate with changes in the combustion performance of the fuels. In this...
    Resource Type:
    Honors College Thesis
    Full Text:
    , OR, 97330, United States David L. Blunck‡ Oregon State University, Corvallis, OR, 97330, United

  • Temperature Evolution of Nonreacting Spark Kernels at Sub-Atmospheric Pressures

    Creator:
    Caplan, Daniel L.
    Abstract:
    In the event of a mid-flight flameout of a gas turbine engine, reignition is paramount to occupant safety. Ignition at high altitude can be challenging, due in part to the potentially lower ambient pressures. An understanding of the effects of sub-atmospheric pressures on the temperature evolution of spark kernels is...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________ David L. Blunck In the event of a mid-flight flameout of a gas turbine engine