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Multiphysics Modeling of High Voltage Explosive Flux Compression Generators

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Enig Associates, Inc.
4600 East West Hwy Suite 620 Bethesda, MD -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Multiphysics Modeling of High Voltage Explosive Flux Compression Generators
Agency / Branch: DOD / USAF
Contract: FA9451-07-M-0129
Award Amount: $99,968.00


A program to investigate flux compression generator internal voltage intolerance is proposed. This study will coordinate flux compression generator simulations with gas breakdown theory and simulations. The goal of this work is to show that careful modeling of this system can reproduce the experimentally observed voltage intolerance and then propose and demonstrate remedial actions that can be taken to improve it. Flux compression generator numerical modeling tools will provide time-domain evolution of electric fields, magnetic fields, and current densities. Gas breakdown modeling will show if stray conducting paths through the gas are present for specified gas pressure. The effect of these stray paths on FCG operation will also be modeled. Several hypotheses are advanced in this proposal to explain why FCG voltage tolerance is poor. Both axial and end initiated FCG simulations are given. The theory of breakdown of magnetized electronegative gases is described. Two-dimensional gas breakdown simulation results are also presented. Additionally, it is proposed that a comprehensive flux compression generator (FCG) code development project based on commercially available Multiphysics code package be used to investigate the causes of high voltage intolerance of FCGs and to improve the high voltage performance of FCG.

Principal Investigator:

Harold L. Rappaport
Senior Scientist

Business Contact:

Eric N. Enig
Small Business Information at Submission:

12501 Prosperity Drive, Suite 340 Silver Spring, MD 20904

EIN/Tax ID: 521413415
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No