Liquid Injection Modeling for High Enthalpy Air Breathing Propulsion Applications

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-19-P-2027
Agency Tracking Number: F182-056-0794
Amount: $149,992.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: AF182-056
Solicitation Number: 2018.2
Timeline
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-01-29
Award End Date (Contract End Date): 2020-01-29
Small Business Information
629 Park Ave. E, Princeton, IL, 61356
DUNS: 969308311
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Rex Chamberlain
 (815) 915-8772
 rex@tetraresearch.com
Business Contact
 Rex Chamberlain
Phone: (815) 915-8772
Email: rex@tetraresearch.com
Research Institution
N/A
Abstract
A critical aspect of high-speed air-breathing propulsion systems is liquid fuel injection into supersonic flow.The lack of understanding of primary and secondary breakup of liquid columns into droplets, spray plume interaction with shocks and droplet evaporation in high enthalpy flows can only be partially mitigated by targeted experiments.To fill in essential insight, the development of numerical models, when coordinated carefully with experimental efforts, offers significant potential to enable predictive capabilities to enhance the development of high-speed propulsion systems.This effort shall investigate hybrid two-phase liquid injection models that account for full momentum coupling between the phases near the injector and that transition to a dispersed phase model after primary breakup of the liquid column into droplets.The boundary of the pure liquid jet will be tracked to allow liquid stripping and breakup models to be evaluated.Secondary droplet breakup and evaporation models can then be tested in the Lagrangian framework.Evaluation of the modeling assumptions and definition of validation procedures will be coordinated with available experimental data for plume structures, droplet size distributions and droplet velocity profiles.The predictive capability will enhance analysis of liquid injection into high enthalpy flows that are representative of a scramjet environment.

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

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