- Author
-
Kushida, G.
|
Baum, H. R.
|
Kashiwagi, T.
- Title
- Radiative Ignition of Thin Cellulosic Sheet in a Microgravity Environment.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
Nagoya Univ., Japan
- Report
-
Session A-6,
- Book or Conf
- Combustion Institute/Eastern States Section. Chemical and Physical Processes in Combustion. Fall Technical Meeting, 1990. December 3-5, 1990,
Orlando, FL,
47/1-4 p.,
1990
- Keywords
-
combustion
|
microgravity
|
ignition
|
sheets
|
flame spread
|
solid fuels
|
mathematical models
|
equations
|
transport equation
- Abstract
- This paper describes the continuation of a theoretical and experimental research program studying the radiative ignition and subsequent transition to flame spread processes for solid fuels in a microgravity environment. In the present work a mathematical model capable of predicting ignition of a thermally thin cellulosic sheet is coupled to a generalization of the gas phase preheating and of heat and mass transport of degradation products in the gas phase, which was previously presented. The calculations include thermal heating and degradation reactions (one pyrolysis and two oxidative reactions) of the cellulosic sheet and one-step global gas phase oxidative reaction with heat and mass transport equations in the gas phase in an axisymmetric configuration. Results are presented for the gas phase distribution of velocity, temperature, species concentration and oxidative reaction rate as well as the solid phase temperature and density distributions.