Ultra-High-Speed Imaging of Fuel Spray and Detonations for Naval Propulsion
Abstract
Research Area: Power, Propulsion and Thermal ManagementProgram Officer: Dr. Steven MartensDepartment: Code 351Email: steven.martens@navy.milUltra-High-Speed Imaging of Fuel Spray and Detonations for Naval PropulsionPI: Kareem A. AhmedCenter for Advanced Turbomachinery and Energy ResearchUniversity of Central FloridaThe performance and efficiency of high-speed propulsion is critical for Naval aircraft warfighter jet engines and ship propulsion. These systems include gas turbine engines, afterburners, ramjets/scramjets, anddetonation-based engines. These systems rely on the multiphase fuel spray breakup and atomization in high-speed flows for combustion or for sustaining rotating detonations. These high-speed flow regimes are at extreme conditions that make it challenging to conduct diagnostic measurements for research explorations. These regimes experience extreme velocities, pressures, and temperatures requiring unique ultra-high-speed imaging diagnostic system equipment at 1 billionframes per second (1 GHz) and nanosecond exposures to freeze the flow events. This necessitates unique ultra-high-speed camera and laser diagnostic techniques to make measurements and explore the high-speed flow physics. The proposed ultra-high-speed camera and laser diagnostic equipment is key to exploring multiphase fuel spray for Navy combustion and detonation systems. The goal is to couple these advanced diagnostics to our optically accessible facilities to make measurements and explore the physics of the multiphase flow. The PI is currently sponsored under an ONR grant to investigate multiphase sprays and a recent ONR MURI for multiphase detonations. The proposed equipment heavily leverages the ONR current funded projects and extend their impacts by providing the crucially needed equipment for the investigation of the multiphase flow. The ONR funding provides the fundamental understanding and support for the students to conduct the research which will be leveraged and coupled with the proposed equipment to investigate the fuel spray. The study will focus on experimental measurements and analyses utilizing the proposed ultra-high-speed imaging diagnostic equipment for high-speed velocimetry measurements. An integrated research-and-education program is proposed to augment the institutional research, curriculum, training, and education in STEM using the proposed equipment. The overarching goal is to drive student growth in STEM disciplines, championing three key innovative initiatives: (i) Outreach and Learning, (ii) Course Curriculum, and (iii) Public and Professional Education. The measurements and data acquired using the proposed equipment will provide educational opportunities for students from local high-schools, undergraduate and graduate research Theses and Dissertations, minority STEM outreach programs, curriculum project-based learning, and professional education. The data will provide new understanding and validation data for predictive numerical modelsunder conditions that are relevant tohypersonic systems. The knowledge gained from this investigation will significantly advance the performance of efficient Navy propulsion systems for warfighter dominance.Approved for public release
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2023
- Source ID
- N000142312264
Entities
People
- Kareem Ahmed
Organizations
- Office of Naval Research
- United States Navy
- University of Central Florida Board of Trustees