Features of the Numerical Simulation of Heat and Mass Transfer in Low Density Porous Ablative Materials

The system of equation, describing heat and mass transfer in the ablative materials of low density, was selected on the basis of the data presented during last years at conferences “Ablation Workshop”. The validation of the mathematical model of considered physical processes and the verification of it’s software implementation are performed for the "virtual" material TACOT (Theoretical Ablative Composite for Open Testing). A set of 2D calculations was performed, which demonstrated the significance of taking into account the gas motion under the action of pressure gradients specified by boundary conditions and destruction of the material.

thermal protection, heat and mass transfer, destruction, ablation

Volume 18, issue 2, 2017 year

Особенности расчёта тепломассопереноса в пористых абляционных материалах малой плотности

На основе данных, представленных в последние годы на конференциях Ablation Workshop, выбрана система уравнений, описывающая перенос энергии и массы в абляционных материалах малой плотности. Валидация физико-математической модели и верификация её программной реализации проведено для «виртуального» материала TACOT (Theoretical Ablative Composite for Open Testing). Выполнен ряд 2D расчётов, показавших необходимость учёта движения газа под действием перепада давления, определяемого граничными условиями и деструкцией материала.

теплозащита, тепломассоперенос, деструкция, абляция.

Volume 18, issue 2, 2017 year

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