Abstract
A two-dimensional (2D) model of infiltration-mediated combustion in a porous sample with all boundaries closed to gas penetration except for one open to exchange with a large bath of gas is considered. Numerical analysis with account of heat losses through the side surface has shown that the profile of gas pressure is substantially two-dimensional. Due to heat losses, the transversal gas flow begins to occur from a cold wall (where there is no reaction and gas consumption) to the sample center (where gas is deficient). As a result, the distribution of conversion degree over sample cross sections exhibits a maximum near the side surface, which reasonably agrees with the experimental data obtained for combustion of tantalum powder in nitrogen gas in quartz tubes.
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 callMore From: International Journal of Self-Propagating High-Temperature Synthesis
Disclaimer: 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.
