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Generic Cost Estimation Framework For Design And Manufacturing Evaluation, Uday A. Kilkami Apr 2002

Generic Cost Estimation Framework For Design And Manufacturing Evaluation, Uday A. Kilkami

Mechanical & Aerospace Engineering Theses & Dissertations

A major drawback of current cost estimation models is their incapability of embracing effectively complete product development stage. Parametric estimation works well in early stages of design, but in detail design stage, a more complete estimation is provided by process model based and detail estimation techniques. A major paradigm shift is proposed in this work whereby ‘Cost’ is to be considered as a design parameter from scientific perspective, and it is to be treated as a design consequence rather than as an operational outcome. A comprehensive framework using System Analysis fundamentals is designed to study ‘Process Cost’ aspects of part …


Numerical Model Of The Transient Effects Of A Heat Of Fusion Reservoir Interacting With Two-Phase Flow, Anne-Marie Bechard Thibodeau Jan 2002

Numerical Model Of The Transient Effects Of A Heat Of Fusion Reservoir Interacting With Two-Phase Flow, Anne-Marie Bechard Thibodeau

Electronic Theses and Dissertations

The object of this thesis is to develop a numerical model that simulates the transient behavior of a coaxial, thermal energy storage system consisting of a phase changing material ( P O interacting with a two-phase fluid. The purpose of this model would be to have a useful design tool that could be applied when sizing and building iceon- coil, cooling systems (ice-banks). The numerical model is an explicit finite volume approximation applied to the enthalpy method. It solves a two-dimensional, axisymrnetric, heat conduction problem with conjugate forced convection at its inner boundary. Natural convection is neglected in the PCM. …