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Filtering by: Creator Hindmarsh, R. Remove constraint Creator: Hindmarsh, R. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering

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  • Modeling hop kilning with respect to energy consumption and drying kinetics

    Creator:
    Thomas, Matthew W.
    Abstract:
    Currently, little work has been performed studying energy consumption in hop kilning. This thesis explores drying with an alternative drying schedule that extends the initially elevated drying temperature currently used by growers and examines its impact on drying time and energy use. Extending the time of the initially elevated drying...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________ Brian M. Fronk Karl R

  • Use of the exergy concept for design improvement of heat exchangers and heat exchanger networks

    Creator:
    Ranasinghe, Jatila
    Abstract:
    The second law of thermodynamics, through the exergy concept, allows us to quantify and rationally cost the consumption of exergy (irreversibility) used to drive the heat exchange process and the effluent losses of exergy in a heat exchanger For systems with a network of heat exchangers, the exergy concept recognizes...
    Resource Type:
    Dissertation
    Full Text:
    privacy Head of Department of Mechanical Engineering Redacted for privacy Dean of Gradu V (r e School

  • Evaluating Stiffness Metrics for Predicting the Cost of Chemical Kinetics Integration

    Creator:
    Alferman, Andrew Thomas
    Abstract:
    Simulations of combustion and reacting flows often encounter stiffness in the equations governing chemical kinetics. Explicit solvers for these ordinary differential equations offer low computational expense, but typically cannot efficiently handle stiff systems. In contrast, implicit methods demand greater expense but offer unconditional stability—as a result, most reactive-flow solvers rely...
    Resource Type:
    Masters Thesis
    Full Text:
    corresponding source term, and R is the set of all real numbers [45]. I then expand g in terms of vector and

  • Generalized Preconditioning to Accelerate Simulations with Large Multiphase Chemical Kinetics Models

    Creator:
    Walker, Anthony S.
    Abstract:
    Combustion emissions produced from burning real transportation fuels have many environmental impacts. However, detailed chemistry across multiple phases, time scales, and thermodynamic conditions make predicting combustion emissions challenging. Detailed modeling of the gas phase alone is prohibitively expensive, due to the large size and stiffness of the kinetic models. The...
    Resource Type:
    Dissertation
    Full Text:
    number of reactions R. Since the preconditioner requires that we use moles, we must also convert any

  • The impacts of ionization chemistry on hydrocarbon detonation

    Creator:
    Zaiger, Matthew F.
    Abstract:
    As carbon emissions are negatively impacting ecosystems across the globe, researchers are in a race against time to provide cleaner and more eÿcient power. Detonation engines can help meet the increasing demands for cleaner and more eÿcient power generation by providing an alternative means to use oxy-fuel combustion for carbon...
    Resource Type:
    Masters Thesis
    Full Text:
    constant, α is the temperature exponent, Ea is the activation energy, and R the universal gas constant