Abstract
On the basis of mathematical modeling of
fluid flow in vortex devices verification of use of
detached-eddy simulation method in the swirling flows in
vortex chamber superchargers is made. Research of a
flow with use of different turbulence models was made
for vortex chamber supercharger in two working points of
the characteristic: with the open exit channel and closed.
Verification has been spent on integrated parameters, and
also on kinematic, by comparison of static pressure value
of on the top end cover of the device. It is received that
the hybrid turbulence model DES does not allow, as well
as model SST precisely to predict value of vacuum on an
axis of the vortex chamber. The error makes an order of
20 %. However, DES predicts almost correct, on 20 %
big, than model SST, values of vacuum on an axis in a
throat axial diffuser on an input in the vortex chamber.
Besides, by means of DES it is possible to describe more
adequately unsteady structures near to an axis of the
vortex chamber, and also vortex core precession that does
not allow to make SST turbulence model. By optimization
of vortex devices, and vortex chamber superchargers in
particular, simulation time essentially is better to use SST
turbulence model with rotation-curvature correction.
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