Non-stationary mode of saturated vapor film condensation on cone surface under zero-gravity

Аuthors

Cherkasov S. G.^*, Moiseeva L. A.^**, Suvorov A. V., Tlevcejev V. V.^***

Keldysh Research Centre, 8, Onezhskaya str., Moscow, 125438, Russia

*e-mail: sgcherkasov@yandex.ru
**e-mail: lida.moiseeva@mail.ru
***e-mail: tlevcejev@mail.ru

Abstract

The article considers the process of the saturated vapor film condensation on the conical sur- face under zero gravity condition, when the condensate flow is caused by the capillary forces impact. The problem is being solved in еру axisymmetric non-stationary setting in dimensionless form. The spatial boundaries of various condensation modes zones, such as stationary condensation, uniform growth and transitional zone between them, were marked out. Analytical approximation for the film thickness and in- tegrated heat flux was obtained. Comparison of this approximation with the numerical simulation results was performed.

Keywords:

film condensation, microgravity, ideal zero gravity