Research of the stagnation pressure increasing possibilities in a high-speed flow


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Traditionally, so-called the machine methods are used to increase the total pressure, i.e. various types of compressors are used. The compressors operation principle is based on the supply of mechanical energy to the flow.
The paper considers a method of increasing the stagnation pressure, based on the thermal effect on the flow (heat removal). The influence of various factors on the stagnation pressure increasing has been studied for the channel flow in the presence of thermal action only.
Various methods of flow cooling are considered. It is shown that evaporative cooling is the most effective methods from the point of view the stagnation pressure increasing.
An overview of the evaporative cooling use to increase the stagnation pressure is presented. On the basis of a one-dimensional model of an evaporative cooling device, the possibility of the stagnation pressure increasing by a factor of 1.25 at supersonic inlet velocities is shown.

stagnation pressure, aerothermopressor, energy separation, evaporation, compressible flow

DOI: http://doi.org/10.33257/PhChGD.23.5.1008


Volume 23, issue 5, 2022 year


Исследование возможностей повышения давления торможения в высокоскоростном потоке

Традиционно для повышения давления торможения используют, так называемые, машинные методы, т.е. применяют различные компрессоры, принцип работы которых основан на подводе к потоку механической энергии. В работе рассмотрен способ повышения давления торможения, основанный на тепловом воздействии на поток (отвод тепла). Исследовано влияние различных факторов на степень повышения давления торможения при течении в канале при наличии только теплового воз-действия.
Рассмотрены различные методы охлаждения потока. Показано, что наиболее эффективным с точки зрения повышения давления торможения является испарительное охлаждение. Приведён обзор работ по использованию испарительного охлаждения для повышения давления торможения. На базе одномерной модели устройства испарительного охлаждения показана возможность повышения давления торможения в 1.25 раза при сверхзвуковых скоростях на входе.

давление торможения, аэротермопрессия, энергоразделение, испарение, сжимаемое течение

DOI: http://doi.org/10.33257/PhChGD.23.5.1008


Volume 23, issue 5, 2022 year



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