Search Constraints

Start Over
Filtering by: Subject Porous materials -- Thermal properties -- Mathematical models Remove constraint Subject: Porous materials -- Thermal properties -- Mathematical models Decade 1990-1999 Remove constraint Decade: 1990-1999

Search Results

  • The effect of void distribution on the Hugoniot state of porous media

    Creator:
    Creel, Emory Myron Willett
    Abstract:
    Shocked porous granular material experiences pressure dependent compaction. D. John Pastine introduced a model in which the degree of compaction is dependent on the pressure induced by the shock wave, the shear strength of the material, and the distribution of void sizes. In the past, the model could only be...
    Resource Type:
    Masters Thesis
    Full Text:
    , D. John Pastine introduced an model that allowed a distribution of void sizes in a porous material

  • Modeling a heat regenerator-reactor with temperature dependent gas properties

    Creator:
    Kulkarni, Milind S.
    Abstract:
    This thesis examines the transient response of a packed bed heat regenerator when heated from an initial uniform bed temperature. Very large (1700 K) temperature differences were studied as well as the effect of simultaneous chemical reaction in the gas phase. First the effects of temperature on physical and transport...
    Resource Type:
    Masters Thesis
    Full Text:
    MODEL Vs CONSTANT GAS PROPERTY MODELS 67 4.6 COMPRESSIBLE MODEL Vs CONSTANT Cp OR CONSTANT h MODELS 81

  • Three-dimensional, nonlinear viscoelastic analysis of laminated composites : a finite element approach

    Creator:
    Wang, Min
    Abstract:
    Polymeric composites exhibit time-dependent behavior, which raises a concern about their long term durability and leads to a viscoelastic study of these materials. Linear viscoelastic analysis has been found to be inadequate because many polymers exhibit nonlinear viscoelastic behavior. Classical laminate theory is commonly used in the study of laminated...
    Resource Type:
    Dissertation
    Full Text:
    Geometry Data 116 A.3 Constraint Data 118 A.4 Real Constant and Material Property Data 119 A.5 Load Data

  • Two dimensional numerical simulation of a non-isothermal GaAs MESFET

    Creator:
    Lin, Angela A.
    Abstract:
    The low thermal conductivity of gallium arsenide compared to silicon results in self-heating effects in GaAs MESFETs that limit the electrical performance of such devices for high power applications. To date, analytical thermal models of self heating in GaAs MESFETs are based on the assumption of a uniformly heated channel....
    Resource Type:
    Masters Thesis
    Full Text:
    models in the literature. Electro thermal effects into the twodimensional isothermal MESFET model

  • Indirect parameter identification algorithm in radial coordinates for a porous medium

    Creator:
    Roley, Kenneth L.
    Abstract:
    The decision to bury high level nuclear wastes in deep geological formations led to the study of the Hanford Nuclear Reservation as one of three possible sites for the first nuclear waste repository in the United States. To adequately evaluate the environmental impact of siting nuclear waste repositories in basalt...
    Resource Type:
    Masters Thesis
    Full Text:
    coordinates for a porous medium AN ABSTRACT OF THE THESIS OF Kenneth L. Roley for the degree of Master of