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Filtering by: Subject Investments -- Mathematical models Remove constraint Subject: Investments -- Mathematical models Academic Affiliation Mechanical Engineering Remove constraint Academic Affiliation: Mechanical Engineering Language English [eng] Remove constraint Language: English [eng] Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • Volumetric receiver development : a heat transfer and design evaluation of an advanced air heating solar thermal central receiver concept

    Creator:
    Drost, M. K.
    Abstract:
    The volumetric receiver is an advanced solar central receiver concept designed to produce high temperature air. This document presents the results of a heat transfer and performance evaluation of the volumetric receiver concept. The volumetric receiver consists of an array of ceramic fins or fibers arranged in concentric rows around...
    Resource Type:
    Dissertation
    Full Text:
    calculated using a Monte Carlo model where an innovative numerical scheme was used to improve computation

  • Performance of rotary regenerative heat exchanger--a numerical simulation

    Creator:
    Bae, Young Lib
    Abstract:
    This thesis examines the transient and steady-state temperature performance of a rotary regenerative heat exchanger. In contrast to previous studies on this problem, fluid flow in the circumferential direction was considered. Appropriate modeling was included to measure the effect of carry-over on the differential equations describing mass and energy conservation....
    Resource Type:
    Dissertation
    Full Text:
    express particular appreciation to Dr. Lindstrom for his advice on the mathematical development of this

  • Numerical modeling of the hydrodynamics of gas fluidized beds

    Creator:
    Wang, Yusan
    Abstract:
    This research involves a numerical study of the hydrodynamics of gas fluidized beds. We use the continuum model, treating both gas and particles as interpenetrating continua. The motion of gas and particles is strongly coupled by the interactions between them. For simplicity, we only consider drag forces. We use MacCormack's...
    Resource Type:
    Dissertation

  • A numerical study of solid fuel combustion in a moving bed

    Creator:
    Ko, Daekwun
    Abstract:
    Coal continues to be burned by direct combustion in packed or moving bed in small size domestic furnaces, medium size industrial furnaces, as well as small power stations. Recent stringent restrictions on exhaust emissions call for a better understanding of the process of combustion of coal in beds. The present...
    Resource Type:
    Dissertation
    Full Text:
    mathematical model for a solid fuel bed, analytic solutions on temperature and concentration were obtained

  • Rebound predictions of mechanical collisions

    Creator:
    Lai, Liang-Ju
    Abstract:
    Predictions of mechanical collisions between two bodies frequently cannot be completed by the impulse-momentum equation together with a complete description of the motion of the system at the initial contact. Additional account must be taken of the deformations and frictional interaction induced by the impulsive reaction force, where the bodies...
    Resource Type:
    Dissertation
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    , a considerably simplified, coupled, conservative model, which captures the essential

  • Laminar natural convection within long vertical uniformly heated parallel-plate channels and circular tubes

    Creator:
    Vorayos, Nat
    Abstract:
    The problem of simple mathematical models of laminar natural convective flow within a long vertical parallel-plate channels and circular tubes kept at uniformly heated walls is revisited to seek a clear physical understanding of heat transfer mechanisms. A series solution method to analyze the fully developed flow and an integral...
    Resource Type:
    Dissertation
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    ..................................................................... 58 4.4 Mathematical Model ........................................................... 65 4.5

  • Interactions of a fully modulated inclined jet with a crossflow

    Creator:
    Dano, Bertrand P. E.
    Abstract:
    Jets in crossflow are used in a wide range of engineering applications and have been studied for more than 60 years. The transversal penetration and structure of a jet placed in a crossflow is known to be strongly three-dimensional. It is believed that, by using a pulsed jet inclined in...
    Resource Type:
    Dissertation
    Full Text:
    important modes are injected in the equations to model the effect of a parameter such as the pulsing

  • Numerical study of natural convection in square partitioned and non-partitioned enclosures

    Creator:
    Sukkaset, Prasart
    Abstract:
    Heat transfer characteristics and associated temperature and flow fields for natural convection in two-dimensional, square, partitioned and non-partitioned enclosures have been determined for Grashof numbers ranging from 10³ to 10⁶. The vertical side walls of the enclosure are isothermal with all other surfaces assumed to be adiabatic. An adiabatic partition...
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    Dissertation
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    MATHEMATICAL FORMULATION Page 1 4 4 11 25 3.1 Governing Equations 25 3.2 Nondimensional Equations 29 3.3

  • Discrete-time blade pitch control for wind turbine torque regulation with digitally simulated random turbulence excitation

    Creator:
    Sharif-Razi, Ali-Reza
    Abstract:
    A time domain simulation model which approximates the three-dimensional velocity fluctuations of wind turbulence has been developed. This model is used in a discrete time control algorithm to regulate the output torque of a wind turbine by changing the pitch angle of the turbine blade. The wind model provides a...
    Resource Type:
    Dissertation
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    Privacy )11 William E. Holle A time domain simulation model which approximates the three-dimensional

  • Derivation and automatic generation of Kane's dynamical equations for mechanical manipulators

    Creator:
    Nie, Tinglin
    Abstract:
    To design and precisely control a manipulator requires developing an efficient dynamic model of the system. The present work demonstrates how this can be accomplished by employing Kane's dynamical equations. First, a detailed manual derivation of the equations of motion for a particular robot is presented in such way that...
    Resource Type:
    Dissertation
    Full Text:
    dynamic model of the system. The present work demonstrates how this can be accomplished by employing