Numerical modeling of intrachamber processes at the output settlement mode of a solid propellant rocket engine

Abstract

Проведено комплексное численное моделирование внутрикамерных процессов, протекающих при выходе на расчётный режим работы ракетного двигателя твёрдого топлива. Рассматривается сопряжённая задача, включающая в себя: -нестационарное срабатывание воспламенительного устройства; -прогрев, воспламенение и последующее нестационарное горение заряда твёрдого топлива; -нестационарное трёхфазное гомогенно-гетерогенное течение продуктов сгорания в камере сгорания, сопле и за сопловым блоком ракетного двигателя; -разгерметизацию двигателя и вылет заглушки соплового блока. Приводятся результаты расчётов. Complex numerical modeling of the intrachamber processes, proceeding at the output settlement mode of operation of a solid propellant rocket engine, is carried out. We consider the coupled problem, which involves nonstationary operation of an ignition device; warming up, ignition and subsequent non-stationary burning of a propellant grain; non-stationary three-phase homogeneous-heterogeneous flow of the products of combustion in the combustion chamber, in the nozzle and behind the nozzle of the rocket engine; depressurization and moving of the nozzle block membrane. The results of modeling are given.

Numeric simulation of the interaction between subsonic flow and a deformable profile blade on the compressor experiment phase

“…It's also necessary to consider vibration processes in magnetic suspensions. Vibration processes in labyrinth seals and in a gas-dynamic tracks are also taken as key vibration factors [2,3,4,5].…”

“…It's also necessary to consider vibration processes in magnetic suspensions. Vibration processes in labyrinth seals and in a gas-dynamic tracks are also taken as key vibration factors [2,3,4,5].Moreover, the analysis of vibration and aerodynamics is carried out separately due to the complexity of the calculations. Nowadays the vibrations in compressors cannot be predicted as essential factors and are not taken into account.…”