Abstract
The structure and soot properties of steady nonbuoyant round laminar jet diffusion flames at microgravity were studied based on measurements obtained on orbit during three flights of the Space Shuttle Columbia (Flights STS-83, 94 and 107). The test conditions included ethylene- and propane-fueled flames burning in still air at ambient temperature of 300 K and ambient pressures of 35-130 kPa, for jet exit diameters of 0.40- 2.70 mm and jet exit Reynolds numbers of 46-1186, to yield steady nonbuoyant round laminar jet diffusion flames with most of the flames near the laminar smoke- point. The first phase of the study involved evaluation of the classical analysis of the structure of steady nonbuoyant round laminar jet diffusion flames due to Spalding (1979), after empirically extending it to account for the presence of luminosity due to the presence of soot within the flames. It was found that the extended Spalding (1979) analysis provided excellent predictions of the flame shape properties of the test flames when radiative heat losses were small so that quenching and flame-tip opening were avoided. This analysis also shows that flame properties are identical functions of time for nonbuoyant laminar *
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
