Degree Type

Dissertation

Date of Award

1992

Degree Name

Doctor of Philosophy

Department

Mechanical Engineering

First Advisor

Michael B. Pate

Abstract

The thermal performance of a V7 (the trade-name for a particular type of switch) precision switch was experimentally investigated and a computer model that predicts the heat transfer behavior was developed. The mathematical model of the switch, which is composed of a set of partial differential equations, is derived from the conservation law of energy, Fourier's law, and Newton's law of cooling. By using a numerical finite difference method, the resulting mathematical model is solved. The results show that this model predicts the temperature distribution of the switch reasonably well, especially the temperature rise of the terminal, which is limited by quality control guidelines. Both experimental data and model predictions plus their comparisons are reported. Based on the model analysis, a complete study of parameters that affect the thermal performance of a switch was performed for design purposes.

DOI

https://doi.org/10.31274/rtd-180813-10400

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu/

Copyright Owner

Nien-Tsung Hsiao

Language

en

Proquest ID

AAI9626083

File Format

application/pdf

File Size

124 pages

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