Diffusion flames over a melting polymer disk in von kármán swirling flows |
| |
| Authors: | Vedha Nayagam R Balasubramaniam |
| |
| Affiliation: | a National Center for Space Exploration Research, NASA Glenn Research Center, Cleveland, OH 44135, USA
b Department of Mechanical and Aerospace Engineering, University of California at San Diego, La Jolla, CA 92093, USA |
| |
| Abstract: | A laminar diffusion flame that is established over a spinning, thermoplastic, polymer fuel disk in a quiescent, oxidizing environment under microgravity is analyzed theoretically. The conservation equations for the polymer melt layer coupled to the gas-phase equations are solved numerically using similarity transformations. The polymer melting rate, the thickness of the melt layer, and the fraction of melted fuel that is burned in the gas-phase are predicted as functions of the ambient conditions and polymer property values. In these calculations the melt viscosity is assumed to vary with temperature in an Arrhenius form. Results are presented for polymethylmethacrylate (PMMA) disks burning in air at atmospheric pressure and compared against earlier experimental results. |
| |
| Keywords: | Polymer combustion Diffusion flame |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
