SCIENTIFIC ABSTRACT YAGODKIN, S.I. - YAGODOVSKIY, V.D.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001961820001-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 15, 2001
• Sequence Number: 1
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

YUKIMIA, Yu,A.;
Dispensary observation on convalescents having had BoUkin Is
diseases. Sov. med. 26 no.11 :136-140 N162 (MIRA 17 93)
1. lz kafedry fakulltetskoy torapii ispo2nyayuahchiy c)byazan-
nosti zaveduyushchego - dotsent T.R.Petrova) Kubanskogo meditsin-
skogo instituta i Krasnodarskoy gorodskoy klinicheskoy boll-
nitsy No.1 (glavnyy vrach P.F.A+qwkin).

YAGODM.- V.j7kand.ekonoiq.nauk 1 14

i4 Lf - -",',, "A
s -3
USSR, ysic luid Michanics F" 1-
Card 1A Pub. 41-12/22
Author Yagodkin, V. I., Moscow
Title On the Stability of a Discontinuous Flame Front in a Viscous
Medium
Periodical Izv. AD SSSR, Otd. Tekh- Nauk 7, 101-108, Jul 55
Abstract Presents a theoretical analysis of the stability of flow of a
viscous, incompressible fluid containing a discontinuous flame
front. Obtains boundary conditions for the problem by assuming
uniform mass flow and momentum and uniform velocity of the
flamF! propagation on the disturbed surface of the front. Four
grap~hs; formulae. Four references, 1 USSR.
Institution
Submitted 20 April 1955

_"WN16VS i fy) V.- Dityakin, Yu F., Yagodkin, V. I. (moscow). 24-4-16/34
,TITLE: Influence of periodic oscillations of the speed and the
density of the medium'on the,decomposition of a liquid
st:veam (Vliya*i7e periodicheakikh kolebaniy skorosti i
plotnosti sredy na raspad, zhidkikh struy).
PERIODICAL: "Izv'. Ak. Nauk, ftd I. Tekh~. Nauk".(Bulletin of the Ac-. So.,
Te-obn1cal SclencesTeRion), 1957t No'.41 PP'.115-120 (USSR).
ABSTUCT: In a number of'practical cases involving the decomposition
of a stream into drops, trai~sftion of a laminary flow into
a turbulent onel'ete-, it is of-considerable interest to
study the influence ;f oscillations in the flow speed on
-.1,he''stability of the flow. *It is also considered of in-
terest to evaluate theoretically the influence of density
ascillations-of the gaseous medium surrounding the liquid
stream on the decomposition of the stream. Such oscilla-
tions occur, for instance, in the combustion chambers of
jet engines and may brilg about a change of the conditions
of'the'working process. The influence is theoretioally
investigated 'of 'the fluctuations in thespeed and density
of-the-medium'surrounding,the'eylindricaI liquid flow on
the decomposition of the flow. The solution:is effected
by means of the method of small disturbances'. It is
shoWn'that in the- cased of fluctuations in the speed of
Card 1/2 flow of a liquid and-of the density of the medium the
character and the width Pf the wave-zange of unstable

Influence of periodic oscillations of the speed and.the
density,of the-medium on the decomposition of a liquid
St37eam (Cont.) 24-4-10/34
disturbances change-and an infinite number of individual
zones'2of -unstable disturban6eB-'OCCUr'-instead of'the single
zone'*hich'it characteristic in absence of fluctuations,
The optimum wave length-proved to be lower than that.pre-
vailing in absence of fluctuations, i'.e. the fluctuiLtIons
in the flow speed and density of the medium lead to a re-
duction of the'dimensions of theArops produced during
decomposition of the stream. The conclusions obtained.
from the theoretical analysis are qualitatively confi=ed
'by-the experimental results of Mieses-, C (Jet Propulsiont
Vol'.25, No.10, pp-,524-530'534, 1955). ihe authors con-
sider the stability of a circular cylindrical flow of a
liquid and the coordinate system is so chosen that the.
stream is stationary- and that the surrounding medium -has
a'certain speed U . It is assumed that thi6 speed azA
the,density of the surrounding medium are periodic func-
tionsc of time. The liquid is assumed as being ideal and
the flow as being a purely potential flow. L-.N.Britneva
Card 2/2 has assisted in the calculations. -There are 3 graphs, -7
.,references; 6.of which are Russian.
SUBMITTED: July 23, 1956.

S/179/60/000/03/019/039

AUTHORS. -yaking Yu.F. and Yagodkin, V.I.
Dit (Moscow)
TITLE-s
L
Po'ential Flow1of a Liquid Entering-a Plane Channel
Througli Permeable Walls
PERIODICAL; Izv.estiya Akademii nauk SSSR, Otdeleniye telchnicheskikh
nauk~ I-lekhanika i mashinastroyeniyel~ 1960, Nr
pp 126-131 (USSR)
ABSTRACT: Fig I shows the scheme of flow of liquid in the channel.
In many cases the supply velocity throughthe permeable
walls AC, BD Is constant.or changes only slightly
along the length of the wall., it is therefore assumed
constant and equal to vo. The problem is analysed by
conformal transformation (Fig 2)9 complex variable
metbods and elliptic integrals. The final equation found
for flow v along the permeab le walls is Eq (2.10)
with X given by Eq (2.11). Fig 4 shows the,
relationship between V1.1 /voA and N/A for various
values of calculated from Eq (2.10) and (2,11):
A, ?
A is given by Eq (1.2). For the larger values of A
the relationship is linear over the greater par-t of its
Card 1/2

67784
o0
t; (Io S/040/60/624/005/007/028
C11'1/C222
AUTHO.R: YAgoakin, V.I. (1108cow)
TITLE: On the Theox7 of Stability'of the Plows of a Tenacious Fluid
C in Channels
PERIODICAL: Prikladnaya matematika i mekhanika, 1960, Vol.24, No-5,
pp.p65-812
TEXT: 71i th the aid of the method of.(Ref.1) the author investigates
the stability of almost parallel flows with unsymmetric velocity
profiles in a channel (these appear e.g. then if by porous walls of
..,the channel there appear supplies with different velocities) in plane
or ring-shaped channels. The difficulties resulting from the fact that
the unsymmetric disturbances.cannot be split up into a symmetric and an
dntisymmetric part are overcome by the investigation of the asymptotic
behavio 'r of the solutions.of the equation of Orr-Sommerfeld.
Let the velocity profile in the channel be given by figure-1.
Y
4
0
Card 1/7

:ZZZ:~
S/040/60/024/6o5/007/026
C11I/C222
On the TheOr.Y::Of Stability of the Flows of a Tenacious
-PlAid in Channels
Let OC b e the wave number,~N/be the wave 1e t
disturb -Ug h of the
ance, H be the width of~the channel; R
Q I be the Reynolds
number of the flow correspondi the
ng to the Maximal velocity U in
oQnsidered,cross section, V be the kinematic tenacity-, w --I! be the
U
velocity profile in a channel, c be the real dimensionless.wav
velocity. e
Let -Pk (k-192y3t,4) be the Solutions of the equation Of Orr-Sommerfe~ld
?k1 = 'Pk(YII)y 11-1,2, be their values in,the-points y,,y2,, Let the
parameter cC R be large, i. e. R) -113 be small - Let (Y-Y,)/ E
where y is,the coordinate of the critical point. Let
-Z
(1-13) F(Z)-'f S)3/2]d ~d7/(-~ jd
H(I) [.9(1 S)3/21
113 1.3g( 1/3 3
J19
00 00 00
where 3 is a Manckel function of first kind. Let
Card

87784
9/040J60/024/005/007/028
C111/C222
On the Theory of Stability of the Flows of a.Tenacious Fluid in Channels
0
(1.22) Yl-ycl W11 (1+-Al)
where the -41 are determine& by the given profile and c. Let
P, - (1+ X,)F(zl), z, = -04 = (WI ) 1/3 w.1 is the inclination
ol'VLl' CI-ol 'c1
of the profile in the critical pointi (~l = II(I-FI). With these
notations~ in the case ~_-