Mathematical modeling of spatial gas flow in nozzles of nontrivial geometryстатья
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Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
Аннотация:Numerical modeling of the spatial gas flow in an adjustable nozzle with an asymmetric
critical section caused by the overlap of a part of the flow area by a gas flow regulator has been
carried out. The mathematical model is based on three-dimensional models of gas dynamics, the
method of large particles is used for calculation. When describing the unsteady flow of an
inviscid gas, the system of Euler equations is used, written for a computational rectangular plane,taking into account the function of nozzle geometry. The results of calculations of flow
parameters along a nozzle path with a uniform outlet section and with an obliquely cut outlet
nozzle are presented. Calculations were carried out for completely open critical sections and for
half overlapped. For oblique cut nozzles, the overlap of the critical section from the side of the short part and from the side of the long part of the oblique nozzle is considered.