An orthotropic material model is implemented in a three-dimensional material response code, and numerically studied for charring ablative material. Model comparison is performed using an iso-Q sample geometry. The comparison is presented using pyrolysis gas streamlines and time series of temperature at selected virtual thermocouples. Results show that orthotropic permeability affects both pyrolysis gas flow and thermal response, but orthotropic thermal conductivity essentially changes the thermal performance only. The pyrolysis gas flow is hypothesized to contribute to the thermal response of the material as it convects energy through the porous medium.
|Number of pages||10|
|Journal||Journal of Thermophysics and Heat Transfer|
|State||Published - 2015|
Bibliographical noteFunding Information:
Financial support for this work was provided by NASA Kentucky EPSCoR Award NNX10AV39A, and NASA Award NNX13AN04A. The authors would like to thank Huaibao Zhang and Francesco Panerai at the University of Kentucky, Tom van Eekelen at LMS-SAMTECH, Nagi N. Mansour at NASA Ames Research Center, and Jean Lachaud at University of California, Santa Cruz, for several useful discussions.
Copyright © 2014 by Haoyue Weng and Alexandre Martin.
ASJC Scopus subject areas
- Condensed Matter Physics
- Aerospace Engineering
- Mechanical Engineering
- Fluid Flow and Transfer Processes
- Space and Planetary Science