FLOW OF A SEMI-BOUNDED STREAM WITH FRICTION AND HEAT EXCHANGE IN THE NOZZLE CHANNEL OF A LIQUID ROCKET ENGINE
Journal Title: Проблеми тертя та зношування - Year 2017, Vol 75, Issue
Abstract
The ways of problem solving of determining frictional losses during cooling of a jet nozzle of a liquid rocket engine by gas-generating gas, taking into account the compressibility, non-isothermicity and gradient of the main flow at blowing of the cooling gas-generating gas along the tangent to the cooled surface are analyzed in article. The momentum coefficient and optimal parameters of the blowing system are calculated using a semi-empirical integral method. Equations for determining the maximum stress are obtained. They depend only on the parameters of the profile of the averaged velocity. Equations can be used to calculate the difference of tangential frictional stresses at the boundaries of each calculated region. The use of integral and numerical methods can be recommended for solving problems of friction and heat-capacity during cooling of the nozzle by a gas-generating gas which is blown along the tangent to the cooled surface of the nozzle.
Authors and Affiliations
YU. M. TERESHCHENKO, K. V. DOROSHENKO, YU. YU. TERESHCHENKO, P. HAMZEG
Keywords
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