SCIENTIFIC ABSTRACT BARMICHEV, V. - BARMIN, L. N.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000203630005-2
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 41
• Document Creation Date: November 2, 2016
• Document Release Date: June 8, 2000
• Sequence Number: 5
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB

ROYUK, Dmitriy Prokof 'yevich [Radziuk. D.P-. ];
BARMIV'PXY-..-Y, [Barmichau, Vol, red.;
....
VIAMANOVICH, I., tekh.red.
(On th3 road to a great -apsurgel Pa shliakhu vialikaha
uzdymu.
Minsk, Vyd-va Akad.navul- BSSR, 1958. 164 p. (MMA 12:3)
(White Russia--Economic conditions)

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leninCrad, Detfiz, 1954. 47 p.
SO: Morithly Liet of Eus ian Accessions, Vol 7, 1-0 9, Dec
1~114

M823
24011 22011 ?-Tbl S/020/60/134/005/006/023
BO19/BO60
0
AUTHORS: Barm~n, A, A. and Gogosov, V. V,
TITLE: The Piston Problem in Magnetohydrodynamiesi
PERIODICAL: Doklady Akademii nauk SSSR, 196o, vol. 134, No.
5;
pp,, 1041 - 1043
TEXT: The authors studied the motion of a piston in a
conducting medium
without presupposing re,,3trictions in velocity or in the
magnetic field,
Piston 9nd medium are assumed as being ideally conductive,
and it is
further presupposed that the internal energy of the medium
be related to
pressure and density by the relation e - rp(3- - 1)Q A
diagram constructed
in the velocity space served for determining the
combinations of
propagation rates of shock waves, of rarefaction waves, and
of -rotational
discontinuities.. The construction of this diagram
presupposes the know..
ledge of relations between the absolute gas velocities u, v,
w behind the
Dhock waves, the velocities of rarefaction waves, and "he
discontinuities
with respect to the Alfv6n velocity in the undisturbed
medium, These
relationships are discussed, and the diagram is then set up
in the
Card 112

The Piston Problem in Magnet ohy drodynaini cs
S/020/60/134/00~,/C)06/1023
B019/BO60
velocity space, The mode of combination of waves in the
plas%,,a is
inferred from the position of the piston velocity in the
diagram !,I
Y4 and Y- correspond to fast and slow shock waves, P i
arid P to fast and
slow rarefaction waves, and A to a disc?ntinuity, Ihe
following combina-
tionj will be possible.- P - + Morever, *he
AY .Y AY P AP arid Y AP
diagram includes planes and linea, where P and Y*, P and
Y , and A,
respectively, are vanishing, A,, G.. Kulikovskiy, G S,-
Golitsin.
I~ A. Akhiyezer, R., V,- Polovin, and-=a---I-yib~-~'s-kiy
are mentioned The
authors thank A. -Kur-ikoV-9kiy and G. A., v for their
discussions
and remarks,. e are 1 figure arid 15 references: 11
Soviet and '-' US
ASSNIATION: Moskovskiy gosudarstvennyy universitet im, Y.
V Lomonosova
(Moscow State University imeni M- V Lomonosov)
PRESENTED~ May 19, ';960.~ by L, I. Sedov, Academicl-an
SUBIAITTED: May 8; 196c
Card 2/2

S102,316 1/1
3 1 C, C) I
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T iTLE-- Discont4nu4ty surf-ccs or
C-cr~,- In Mai ne ohyarc) 'y n a 7:~ 4 c
7 - C,
.1 70DICAT.: D o 1: tiy A 6 o r.-. i i Z337,
TEYT : A study has been mnde of dis cont--*nu_it,:,~ surfaces
--'n an c I c c ', Tc a Y
c=luc~ive medJum (conductivitv be-= 'al:er to be -nfin-.e' arb
'rary
et ic field the in t ei-n,-. 1 encr~~-,r beint, -ven lj~- p, Y
~n the d4ccon'inui
U- -t-: are deccribed b-,
V2~~ (Ali + h,) z + 1;
v2= h,z + 1. (2)
AP Ali [z V. (A/z 2111) 1; (3)
AP A!lz; (4)
AR Ahzl(hiz I);
C:~ r d.

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U~
2MIt [2h, - (,r " I)Ald [Ali (h2 + V2Pi + q-
2) li~Ah) + liiql - Ali fAh -i- Did 2q ~ 0.
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ana 2 refer to quantities beforc or ")e1i4n(i tnc cisco~ 4 t
u e-L-
tan ai 7 ,;here c.-i is ~Uhe ar~,le bet-,.%een the q-, ~-tic zird
v - is '*,,-- cot----1--en' of tl-e anele
normal 'o 'he discontinuity sur-~'ace; z
'1213 '2 are t'-e !Te":)c
01 rolal4on o' velocity in 4-he di~continu-+-; --j
U-
0 f d c o r. t --* n.,-i t y r e1 a t i v e t o t h ei s b e -fo r
e a n d b e') nd t',, ec: e
b F 7---
-re
the Al-fvZn velocities beinC, given by V, j a
,,~.ioc` ies of,
n + r 0 0 -e 4 n
2 the 0 _1e
p 1 )
2 4
-C.
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c o n
r":

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e s of J n,~i ar I (I
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2 -
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burning 1 ' 1 L'~ C, 'vn t 0 t e t, t i I d e r, S y
the magnotio field. q , and In disc un t--nlu t I es I tn ab
s,-) r.-, t. o n
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dist,witin'.11ty vii t!! ~11'SWIT'. Oll Q C e c I
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Card 11/7

23805
S1020161/1 38/00 1 /00.9/02 3
Discontinuity surfaces with liberation... B104/B201
jum7D i3 positive for small IqI, and is negative for large
Jol. For a
0 -
giver, q =q*(6h), AP =-Pil i.e., the pressure behind the
d:soontinuity is
vanisM nir, 3B) Sub-Alfv6n discontinuities with absorption of
the d,~tona-
V2
2 4. V2 <
tion typ!?. Here, for the velocities holds: a < a' . The
1 - 1 2 2-
reaction zone moves behind the slow magnetohydrodynamic
shluck wave. With
gufficie-itly large energy absorption this type of
dis,-.ontinuily does not
arise (21