SCIENTIFIC ABSTRACT BARENBLATT, C. Y. - BARENBLATT, G. I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000203610017-1
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 8, 2000
• Sequence Number: 17
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB


SUBJECT oquationj CARD 1/2 PG - 680
AUTHOR BARENBLOT G.Y.
TITLE of the Cauchy problem for non-linear
parabolic equations of a non-stationary ga,,, filtration in a
porous medium.
PERIODWAL Priklad.Mlat.Mech. 20 '161-765 (1056)
reviered 4/1957 -.L
For a non-stationaryr axial-symmetric isothermal gas
filtration in a porous
medium the gas pressure p satisfies the equation
2 1 6
7t 7 r
Here t is the time, r the distance from the symmetry axis of
the flow, a is
a ccristant which depends on the properties of the gas and
of the porous
medium. The author investigateS the auto-molel solutions of
the Cauchy
problem for (1). These solutions satisfy the initial
cordit-ions
p(r,O) - 6r C4 rith constant 6, Ck > 0
and furthermore the condition -'a 0.

Priklad.Mat.Yech. 20, 76,1-7163 (1956) CARD 2/12 PG - 6ac
It is proved that, for 0 dy can stand the load.
liot in- all ca-Gea
Card 1/2

ACCESSIGIN IM: AP4043265
thc dcVCl0PMXllt of a crack leaan to rupture, and the strenGth of
mzLterial does not
depd--nd, vitliiu cer-tain Limits., On the size of the initiftl
crackB. orig. art. bas:
9 figurer, alid 33 eqiintiuno.
NSSOCIPd-IONN: Imtltut Miekbanikd, MoBkovskop Univori.,,iteta
(mocilanicra institutt"
Moscow Uai,.vrcity)
SU-al-aTrED: 119Apr64 l,NCL: 00
SUB COM SS NO IMF SQV: Ol-,, 01-HER., OU;
Card 2112

L16685-65 EWT(m)/EPF (0/1EPH/E71p,
%J)/T PC-4/PT--4/PS-4 ASD"-F) .?/ASD(m)
AGGMION NR: AF5000275 W
AUTHOR: Barenblattf G. I._(Hoscow)
TiTLE: On the extonsion of the necked zone with stretching of
polymer; specimens
SOURCE: Pri-kladnaya matematika i mokhapika, v. 28, no. 6, 1964,
1048-1060
TOPIC 'LAGS: polymer, plastic d-,~~formation
5
ABSTRACT: A review ofrignificant work dealing with neckine phenomena
in
stretched -o era is presented. -Attention is called to the fact that
pol5mers'-
lyr,
stretched at a constant strain rate often show first, second, and
even higher
orders,of necking A photograph is included showing different stages
of strain
Z's U
of a 1X:4raer specimen - a pnrt of work carried out in the
Plasticity Division,
Insi-itutp. of Mechanics IZU by 1. Shobolova. The author expresses
the opinion
that polyr-er chain r~~herlt ion causes the. success,i,on of orders
of neck:'Ing in
stressed polymers. A differential equation'is derived d,e.scribing
the rearienta-
tion process in its relation to.stress rate, strain rate, specinon
(neck) cross
section, and voluno of reoriented miterial. Particular solutions are
demonstrated
with the imposition of limiting conditions and deflnition of new
variables,
Conditions determining a critical strean at which and order of
necking terminates
C,,-d 1/2

L 16685-65
ACCESSI07,", NR:, AP5000275
are described matheratically. A,meaTs of finding this stress from
material
descriptions and testing procedureis derived. 7he author cites the
data from
Many scientists working in the. sal and expresses persona2 thanks to
V. AO
-Kargin, S. A. Khristianovich. G. L. Slonimski Tt--I-., Sogolova, R.
L. Salganik,
and V. A. Gorodtsov for their attention to his work ifid-*NoFifi-eir
valuable
observations. Orig. art. has: 4 figures and 39 equations.
ASSOCIATIOM Nauchno-issledovatellskiy institut mekhaniki Moskovskogo
universiteta (Scientific Research Institute of MechanicF, Moscow
University)
SbBMWED: 15Aug64 ENCL., 00
SUB CODEz 14T 110 REF SOV: 009 OTHER 003
Card 2/2

BAREVIDLATT, G. I.
"The 4.1 1 IL- -
_ _ 0~' )rittlo "
PLI,per sliumitted Cor Intl Conf on Frai,tur(,,
JL.j,N1j, t -!~, ~,' , I
I-T ", .
Mosc-ow sj,~Jtt-~ t;jjjV,

f
L-6254645
ACCESSION IRS AP501MM li.P.,~b2O7/65/000/003/0095/0096
AMORS t ftrenblatt, Go lo (Moscow) BuljRa~ I G i JV P-
TITIE2 Effect of some high nolecular cOr -Bolutil is on the lowring
of dr
4)0Und M 49
of. a body in a turbulent-flow
SOMCEs Zhurml prikladpay xvkhaniki i iekhnicheskoy lizikis, no. 3,
1965j, 95-96
''TOPIC-TAGS: turbtaent flow, pol~merv-. glycerine.. drag,', boundary
layer.. experimen-
W-U`Sthod or solution
,,kerosanev wt
MTRAM.' Experimutal investigations were "de to detormine the effect of
polyme"olutions On the drag'of circular. cylinders in. Wrbulent flow.
Tio ex-
4, periments were c4nTied out in open channels 1.2-m vlde~ jknd 1-z
deep. The cylin-
ders were 40 = In diameter and 400 um longe The exlmr:Lment was
c&rried out
first with the support sting without the.cylind r. the:a~vith the
cylinder but
With nt
out, the polywr, and subeequenUy uith cylinder anl~support with
differe
polymer concentrations, The polyrsrs were carbwWnetb.,~Icellulose,
imter solution
oil.
of polyvinyl alcohol$ and alunlnuu'oil. in kerosene vith",04 to 10%
concentrati
in watero At Reyn6lds n=bere of 6.5 x 10% UP to 34% pm;,duation in
c1mg was
1/2