Труды Института механики им. Р.Р. Мавлютова

ISSN 2542–0380

Электронный научный журнал | Electronic Scientific Journal

Proceedings of the Mavlyutov Institute of Mechanics

Bolotnova R.Kh., Korobchinskaya V.A. The study of the process of evolution of the jet under outflow of water from the supercritical state through a thin nozzle Proceedings of the Mavlyutov Institute of Mechanics. 2016. 11(1). 66–71.

2016. Vol. 11. Issue 1, Pp. 66–71
URL: http://proc.uimech.org/uim2016.1.010,en
DOI: 10.21662/uim2016.1.010

The study of the process of evolution of the jet under outflow of water from the supercritical state through a thin nozzle

Bolotnova R.Kh.^∗, Korobchinskaya V.A.^∗,∗∗

^∗Mavlyutov Institute of Mechanics, Ufa
^∗∗Bashkir State University, Ufa

Abstract

The dynamics of the water outflow from the initial supercritical state through a thin nozzle is studied. To describe the initial stage of non-stationary process outflow the system of differential equations of conservation of mass, momentum and energy in a two-dimensional cylindrical coordinates with axial symmetry is used. The spatial distribution of pressure and velocity of jet formation was received. It was established that a supersonic regime of outflow at supercritical temperature of 650 K is formed, which have a qualitative agreement for the velocity compared with the Bernoulli analytical solution and the experimental data.

Keywords

vaporization,
boiling liquid outflow,
mathematical and numerical modeling