Heat Transfer Model for Bubbly Flows

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-09-M-2950
Agency Tracking Number: F083-119-0636
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: AF083-119
Solicitation Number: 2008.3
Small Business Information
Orbital Technologies Corporation (ORBITE
Space Center, 1212 Fourier Drive, Madison, WI, 53717
DUNS: 196894869
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Millicent Coil
 Senior Staff Analyst
 (608) 229-2812
 mmoore@toyon.com
Business Contact
 Eric Rice
Title: Director of Finance
Phone: (608) 229-2730
Email: mlindbery@toyon.com
Research Institution
N/A
Abstract
ORBITEC proposes to develop a heat transfer model to predict heat transfer coefficient in bubbly flows in small tubes.  This model is intended for application to thermal management systems in a variety of propulsion systems, including both air-breathing and rocket engines.  The Phase I work will include parallel experimental and modeling work.  The experimental program will measure heat transfer coefficient and void fraction in bubbly flows of a few fuels in small tubes.  A simplified numerical model will simulate the experiments and build the foundation for a more complex model.  Phase II work will implement the model in a CFD code and will validate its predictions with experiments on a fuel-cooled rocket engine nozzle. BENEFIT: The two-phase heat transfer model developed under this effort will enable engineers to use commercial CFD codes to model thermal management system for a variety of propulsion applications.  Because two-phase heat transfer in small tubes is ubiquitous in propulsion system, the code and the understanding developed through using it will have application to a variety of groups within DoD, NASA, and commercial companies.  ORBITEC intends to be a supplier of both the code and the expertise heat transfer in two-phase flow.

* information listed above is at the time of submission.

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