EXAMINATION OF R-WIRE BURST USING A HYDRODYNAMIC MODEL

Award Information
Agency: Department of Defense
Branch: Defense Threat Reduction Agency
Contract: N/A
Agency Tracking Number: 6142
Amount: $49,977.00
Phase: Phase I
Program: SBIR
Awards Year: 1987
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
4935 N 30th St, Colorado Springs, CO, 80919
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 ROBERT A RACCA
 (303) 528-8080
Business Contact
Phone: () -
Research Institution
N/A
Abstract
STUDIES WILL BE PERFORMED TO EXAMINE THE FEASIBILITY OF USING FAIRLY HIGH RESISTANCE CABLES (R-WIRES) AS A MEANS TO MITIGATE THE LARGE SREMP TRANSIENTS WHICH ARE EXPECTED IN BURIED AND OVERHEAD POWER-LINE DISTRIBUTIONS. THE ANALYSIS WILL UTILIZE COMPUTER CODES WHICH SOLVE THE ONE-DIMENSIONAL TRANSMISSION LINE EQUATIONS IN THE TIME DOMAIN USING FINITE DIFFERENCE TECHNIQUES. A MAJOR PORTION OF THIS EFFORT WILL BE DIRECTED TOWARDS THE INCORPORATION OF A HYDRODYNAMIC MODEL WITHIN THE FRAMEWORK OF THE 1-D CODES TO DESCRIBE THE BEHAVIOR OF THESE RESISTIVE CABLES UNDER ELECTRICAL STRESS. A SUFFICIENTLY LARGE AMOUNT OF ENERGY INJECTED INTO THE CABLE WILL RESULT IN VAPORIZATION OF THE MATERIAL AND SUBSEQUENT FORMATION OF A LOW RESISTANCE "RESTRIKE ARC." EARLIER STUDIES OF RESISTIVE CABLES EMPLOYED A SIMPLE JOULE HEATING MODEL WITHIN THE 1-D CODES. THE PROPOSED STUDY WILL CAREFULLY EXAMINE THE VAPORIZATION AND RESTRIKE PHENOMENON USING THE MORE SOPHISTICATED HYDRODYNAMIC MODEL TO DESCRIBE THESE EFFECTS.

* Information listed above is at the time of submission. *

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