Computational Model for Electrode Erosion by High-Pressure Moving Arcs

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9101-18-C-0050
Agency Tracking Number: F11B-T25-0086a
Amount: $799,627.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: AF11-BT25
Solicitation Number: 2011.0
Solicitation Year: 2011
Award Year: 2018
Award Start Date (Proposal Award Date): 2017-10-11
Award End Date (Contract End Date): 2019-10-11
Small Business Information
701 McMillian Way NW, Huntsville, AL, 35806
DUNS: 185169620
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Vladimir Kolobov
 (256) 726-4800
Business Contact
 Tanu Singhal
Phone: (256) 726-4924
Research Institution
The objective of this program is to mature and verify computational tools to predict electrode erosion by high pressure moving arcs at the High-Enthalpy Arc-Heated Facilities at Arnold Engineering Development Complex. Under an AFOSR Phase II STTR program, CFDRC developed a computational tool for simulations of electrode erosion by high-pressure magnetically moving arcs. The tool uses adaptive Cartesian mesh and multi-phase models to simulate gas flow in the arc attachment region, formation of cathode and anode spots, melting and vaporization of electrode surface, material removal due to vaporization, and magnetic forces. Experimental studies conducted during Phase II indicated crater formation associated with explosive electron emission at the cathode surface, and demonstrated possibility of arc root movement control over electrode surfaces by alternating magnetic fields. During this technology transition program, the tool will be further advanced, verified and validated to enable transition to production use. Advanced models for cathode and anode regions will be developed and implemented to improve code predictive capabilities. Test cases will be performed to demonstrate code abilities to numerically simulate electrode erosion in high-pressure magnetically moving arcs and provide parameters needed by various engineering codes. Software delivery, installation, training and user support will also be provided .

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

US Flag An Official Website of the United States Government