Calculation method for determining thermophysical parameters during long-term storage of cryogenic liquid in tanks of propulsion systems


Аuthors

Basov A. A.1*, Myakochin A. S.2, Tlevcejev V. V.2

1. S. P. Korolev Rocket and Space Corporation «Energia», 4A Lenin Street, Korolev, Moscow area, 141070, Russia
2. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: andrey.basov@rsce.ru

Abstract

The article proposes an equilibrium thermodynamic model for calculating thephysical processes inside the tank, which allows to determine the dynamics of pressure changes in the tanks of propulsion systems (PS). This model is based on the absence of temperature stratification. It is assumed that the component vapors obey the ideal gas equation of state, and the liquid is incompressible. The model under consideration was used to determine the parameters of heat exchange in a cryogenic tank during long-term non-draining storage. The proposed model can also be adapted to describe many thermophysical processes in tanks (DU) at various stages of operation.

Keywords:

thermodynamic model, thermophysical parameters, drainage-free storage, interphase heat and mass transfer, cryogenic liquid, propulsion system tank

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