Temperature and Compositional Measurements in Model Solid Fuel Ramjet Inlet and Exhaust Flows
Abstract
The Hanson Research Group at Stanford University proposes the development and application of tunable diode laser absorption spectroscopy (TDLAS) diagnostics suitable for probing flows in model solid fuel ramjets (SFRJ). The purpose of the proposed Stanford diagnostics is to characterize model SFRJ flows with sufficient detail to enable improvements in the fundamental flow models under development in academic and DoD laboratories. TDLAS sensing can enable quantitative, high-bandwidth, non-invasive measurements of species, temperature, pressure, and velocity in solid fuel combustion flows. The fundamental and applied diagnostic research proposed here should translate into new sensor capabilities that can be utilized to address three critical measurement needs for propulsion-related flows and technologies:1.Characterization of vitiated flow facility freestream composition and thermodynamic state for reduced experimental uncertainty 2.Monitoring of post-combustor composition and temperature to assess influence of solid fuel design on combustion progress and flow enthalpy3.Low-uncertainty, quantitative experimental datasets of aerothermochemical conditions in model propulsion systems for refinement and validation of CFD toolsetsThe following three overarching objectives are proposed in order to address the identified needs for improved sensing in solid fuel combustors:1.Develop, validate, and demonstrate a kHz-rate TDLAS sensor targeting H2O and O2 for measurements of temperature and composition in vitiated inlet air flows2.Develop, validate, and demonstrate a kHz-rate TDLAS sensor targeting H2O, CO, and CO2 for measurements of temperature and composition in solid fuel combustor exhaust flows3.Integrate and deploy sensors in model SFRJ facilities to characterize inlet and exhaust temperature and composition in support ofongoing experimental and modelling effortsIn summary, the new capabilities proposed here aim to enhance both the utility of propulsion ground testing and our fundamental understanding of complex solid fuel combustion phenomena in support of Navy interests.[Approved for public release]
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 24, 2023
- Source ID
- N000142312644
Entities
People
- Ronald Kent Hanson
Organizations
- Office of Naval Research
- Stanford University
- United States Navy