SCIENTIFIC ABSTRACT ZUBTSOV, A.V. - ZURABYAN, K.M.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R002203820013-0
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 1, 2001
• Sequence Number: 13
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

USS9
ZUBTSOV, A. V., PONGMAREV, V. I.
"Asymptotic Solution of the Problem of Flow Around a Wavy Surface by a Flat
Stream of aViscous Fluid"
Uch. zap.. Tsentr. Aero-gidrodinam. In-ta. [Scientific IfTitings of Central
Aerohydrodynamics Institute], 1972, Vol 3, No 2-, pp 39-50, (Translated
from Referativnyy Zhurnal, Mekhanika, No 10~ 1972, Abstract No 10 B677,
from the Resume).
Translation: Flow around a profile with a wavy contour by a stream of a
viscous, incompressible fluid with R >> I is studied. The. case is studied
when b0>> X >> 6 >> h (b 0 is the length of a.profile chord, 211X is the
wavelength, h is the amplitude of the wave, Sis the thickress of the boundary
layer). The perturbations caused by the waviness of the surface are deter-
mined by solving linearized Navier-Stokes,equations. The solution of thlese
equations is found approximately by the method of external and internal
asymptotic expansions with respect to small parametersi, dependent on the
value of ~ = X/b0and the Reynolds number. The solution found is used to
Cstimate the Influence of sui-face wavinos.,q on the stabillty of a flat
boundary layer,

USSR UDC 629,78.015:533.6.015.04
BARINOV, V. A,,-ZUBTSOV A. V.
"Flow of a Viscous Fluid on a Wavy Surface of a Sliding Wing"
Ucb. zap. Tsentr. acro-gidrodina . in-ta (Scientific Notes of the Central
L M
ydrodynamic InstitL-e), 1970, Vol. 1, No. 6, pp 75-81 f a RZh-Raketo-
Aeroh, L rOT
stroyeniye, No 9, Sep 71, Abstract.No 9.41.60)
Translation: The effect of surface waviness on the flow ove-r a sliding wing is
investigated. The problem is solved for.small wavelencths under the as-.;umption
that the wave ampl 'itude
-P.
much leps thall the thicknes"I Of the boundary laycl
In this case the Solution of the probleinjs broken up,into a nonviscous sclu-
tion and the solution of the boundary layer equations. ; It is shown that pertur-
bations caused by waviness in a nonviscous flow appear in a very thin 2.onr-- near
the wall, the thickness of which is of the order of a:wavelength. The nonvis-
f r perturbations in the neighborhood of each t of the surface
cous solution -0 poin,
coincides with the solution for a certain equivaient wavy plate in an ideal flo,-.,
with a'veloc-ity equal to the local velocity of the, unpek~turbed flow. An exampie
of a numerical calculation of the t1wee-dimentional bout.dary layer on a sliding
1/2

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.1 1 -
i
mum, MITIT, ITTI

USSR UDC 629.78.015:532.526
~p=,_,,t.._V,_and PONOMAREV, V. I.
"Asymptotic Solution to the Problem of Viscous-Fluid Plane Flow Around a
Fibrous Surface"
Uch. Zap._Tsentr. Aerogidrodinam. In-ta (Scientific Writings of the Central
Aerohydrodynamics; Institute), Vol 3, No 2, 1972, pp 39-50 (from Referativnyy
Zh urnal--Raketostroyeniye, No 8, 1972, Abstract No 8.41.91)
Abstract: In the viscous-fluid flow around a wing at a Reynolds' number
greater than 1 the flow in the boundary layer is, as a rule, turbulent. One
of the methods of artificial laminarization of tlie flow is sticking the air
from.the boundary layer. In the technological preparation of a win- surface,
a h1gh-frequency undulation can form on it and, consequently, there is
practical interest in inve-qtigating, the effect. of surface undulation oil the
flow of a fluid in the boundary layer, The flow around a profile, having art
incompressible fluid at a
undulating contour, by the flow of a viscous
Reynolds' number greater than 1 can be investigated. The case where
bo p X >6 ~ h (bo-- length of profile chord, 2~T X -- wave length, h -- wave
amplitude, and 6 -- boundary layer thickness) is L~xawlned. Disturbing
effects, caused by surface undulation, are determined from solving
linearized Stokes-Naxrier equations, The solution of these equations was
I hj

IISSR
ZUBTSOV, A. V. and PONOMAREV, V.I., Uch. Zap, Tsentr., Aerogidrodinam.
IRZta, Vol 3, No 2, 1972, pp 39-50 (from ReferativnyyZhurnal--Raketo-
stroyeniye, No 8, 1972, Abstract No 8.41.91),
approximated by the method of external and internal asymptotic expansions
for.small parameters depending on the magnitude of X X /b. and the
Reynolds' number. The solution is usedtor e-valuatingthe effect which
shows thesurface undulation onthe stability-of the plane boundary layer.
Author's view, 5 tables, 3 bibliographical references.
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21

USSR UDC 5342.526
ZU" A V
"Effect of a Single Rough Spot on the Flow of a Liquid in the Boundary Layer"
Uch. zap. Tsentr. aero-gidrodinam. in-ta (Scientific Notes of the Central Aero-
hydrodynamic Institute), 1971, Vol 2, No,l, pp 9-16 (from Uh-Hekhanika, No 11,
Nov 71, Abstract No 11B566)
Translation: A study was made of the flow of a viscous -incompressible liquid
around a body for Reynolds numbers of R >> l.under the condition that there is
a single rough spot on its surface protruding deep into the boundary layer
(h