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1.
S. V. Khabirov 《Journal of Applied Mechanics and Technical Physics》1999,40(2):217-222
Some properties of the invariant gas-dynamic submodel of rank 2 with spiral surfaces of the level are reported. Invariant
and isobaric solutions of the submodel are considered.
Institute of Mechanics, Ufa Scientific Center, Russian Academy of Sciences, Ufa 450000. Translated from Prikladnaya Mekhanika
i Tekhnicheskaya Fizika, Vol. 40, No. 2, pp. 34–39, March–April, 1999. 相似文献
2.
R. I. Nigmatulin I. Sh. Akhatov N. K. Vakhitova 《Journal of Applied Mechanics and Technical Physics》1999,40(2):285-291
A spherically symmetric problem of oscillations of a single gas bubble at the center of a spherical flask filled with a compressible
liquid under the action of pressure oscillations on the flask wall is considered. A system of differential-difference equations
is obtained that extends the Rayleigh-Plesset equation to the case of a compressible liquid and takes into account the pressure-wave
reflection from the bubble and the flask wall. A linear analysis of solutions of this system of equations is performed for
the case of harmonic oscillations of the bubble. Nonlinear resonance oscillations and nearly resonance nonharmonic oscillations
of the bubble caused by harmonic pressure oscillations on the flask wall are analyzed.
Ufa Scientific Center, Russian Academy of Sciences, Ufa 450000. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika,
Vol. 40, No. 2, pp. 111–118, March–April, 1999. 相似文献
3.
V. P. Zhitnikov N. M. Sherykhalina O. I. Sherykhalin 《Journal of Applied Mechanics and Technical Physics》2000,41(1):62-68
An improved Levi-Civita method in which the singularities of the desired function are taken into account by introducing terms
containing power singularities is proposed. Results of numerical analysis of the nonlinear problem of a vortex in a bounded
flow of an ideal weighable fluid (Fr>1) are given. The following limiting flow regimes are studied: the Stokes waves with one and two crests, emergence of a critical
point on the surface, and the detachment of a vortex from a soliton and a uniform flow. It is shown that nonperiodic waves
can form in a local zone in the vicinity of the critical point.
Ufa State Technical Aviation University, Ufa 450000. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 41,
No. 1, pp. 70–76, January–February, 2000. 相似文献
4.
The steady thermal field associated with the flow of gassy oil through a porous medium is investigated with allowance for
the Joule-Thomson and degassing effects. A formula is obtained for estimating the temperature anomalies at the well bottom
on oil inflow intervals which correspond to a bottom pressure lower than the saturation pressure.
Ufa. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No.1, pp. 113–116, January–February,
1994. 相似文献
5.
A mathematical model for the discharge of a gas-saturated liquid from cylindrical channels is developed. Two limiting cases
of linear and quadratic, relations between the flow friction force and the flow velocity are considered. It is established
that the process of evacuation, from a semi-infinite channel consists of two stages. In the initial stage, the flow drag can
be ignored, and the process of discharge is described by a Riemann wave solution. For the next stage, in which inertia is
insignificant, nonlinear equations are obtained and self-similar solutions are constructed for them. The problem of flow through
a slot in a tank of finite volume is solved. It is shown that the discharge proceeds either in a gas-dynamic choking regime
or in a subsonic regime, depending on the conditions inside the tank and at the outlet. Examples of numerical calculations
are given.
Institute of Mechanics, Ufa Scientific Center, Russian Academy of Sciences, Ufa 450000 Translated from Prikladnaya Mekhanika
i Tekhnicheskaya Fizika, Vol. 40, No. 1, pp. 64–73, January–February, 1999. 相似文献
6.
M. M. Khasanov 《Fluid Dynamics》1994,29(2):208-213
The stability of the steady-state flow regimes of a liquid with dissolved gas in a porous medium is investigated in the region
of the saturation pressure. It is shown that under certain conditions periodic and stochastic self-oscillations caused by
the accumulation in the porous medium and subsequent entrainment of the very small gas bubbles formed as a result of pressure
reduction may arise. Experimental data that confirmed the theoretical results are presented.
Ufa. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 2, pp. 66–73, March–April, 1994. 相似文献
7.
R. I. Nigmatulin V. Sh. Shagapov G. Ya. Galeeva 《Journal of Applied Mechanics and Technical Physics》1998,39(5):719-728
Radial oscillations of a gas bubble in a large spherical flask filled with a fluid are considered. We derive an equation of
the change of the bubble radius by the known law of pressure variation at the boundary of the liquid volume (the law of motion
of the piston) for a period of time during which, repeatedly reflected from the piston, the leading front of the reflected-from-the
bubble perturbations reaches the bubble. For further calculations of the change of the bubble radius, recurrent relations
which include the wave reflected from the bubble in the previous cycle and its subsequent reflection from the piston are obtained.
Under harmonic action of the piston on the fluid-bubble system, a certain periodic regime with a package of bubble oscillations
is established.
Institute of Mechanics, Ural Scientific Center, Russian Academy of Sciences, Ufa 450000. Translated from Prikladnaya Mekhanika
i Tekhnicheskaya Fizika, Vol. 39, No. 5, pp. 77–87, September–October, 1998. 相似文献
8.
R. F. Sharafutdinov 《Journal of Applied Mechanics and Technical Physics》1999,40(3):375-378
The regularities of formation of the temperature field at the exit from a pool are established from a numerical study of the
temperature field due to the barothermic effect in filtration of anomalous oil and water. It is shown that the anomalous properties
of oil enhance the contribution of adiabatic cooling at the initial stages of production from an oil well. In simultaneous
motion of anomalous oil and water, a nonmonotonic dependence of the fluid temperature on the saturation of the pool with water
is observed.
Bashkir State University, Ufa 450000. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 40, No. 3, pp. 18–21,
May–June, 1999. 相似文献
9.
S. V. Khabirov 《Journal of Applied Mechanics and Technical Physics》1998,39(6):850-857
An invariant submodel of the equations of gas dynamics constructed on a one-dimensional subalgebra consisting of the sum of
operators of rotation and translation in time is studied within the framework of the SUBMODELS program. The system of equations
of the submodel is brought to symmetric form. Hyperbolicity conditions for the system are derived. Group analysis is performed
and an invariant solution is considered. Isobaric flows are listed. For the simplest of them, characteristics and strong discontinuities
are considered. Necessary conditions for existence of solutions without singularities on the axis are derived.
Institute of Mechanics, Ural Scientific Center, Russian Academy of Sciences, Ufa 450000. Translated from Prikladnya Mekhanika
i Tekhnicheskaya Fizika, Vol. 39, No. 6, pp. 37–45, November–December, 1998. 相似文献
10.
The interaction of long and short waves in a rarefied monodisperse mixture of a weakly compressible viscous liquid and gas
bubbles is considered. For taking the dissipation effects into account an effective-viscosity scheme is used. Four cases of
dissipation are distinguished, namely, strong, medium, weak, and very weak dissipation. In the cases of moderate, weak, and
very weak dissipation the equations of resonance and non-resonance wave interaction are derived using the multiscale method.
The effect of "degeneration" of the interaction is detected in certain of the models constructed. In the case of "degeneration"
a class of new models of the dissipative resonance interaction is constructed and investigated numerically.
Ufa. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 4, pp. 126–138, July–August, 2000. 相似文献
11.
V. G. Chernyak I. V. Chermyaninov E. A. Vilisova E. A. Subbotin 《Journal of Applied Mechanics and Technical Physics》1994,35(5):643-652
Ekaterinburg. Translated from Prikladaya Mekhanika i Tekhnicheskaya Fizika, No. 5, pp. 3–13, September–October, 1994. 相似文献
12.
A. V. Gorin A. V. Zarubin T. N. Mikhailova V. A. Mukhin D. F. Sikovskii 《Journal of Applied Mechanics and Technical Physics》1995,36(1):105-113
Novosibirsk. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, No. 1, pp. 112–121, January–Feburary, 1995. 相似文献
13.
Asterios Pantokratoras 《Transport in Porous Media》2009,80(2):223-227
In this article, we extend the work of Chakrabarti and Gupta (1979, Quart. Appl. Math., Vol. 37, pp. 73–78), and the work
of Pop and Na (1998, Mechanics Research Communications, Vol. 25, pp. 263–269) to a Darcy–Brinkman porous medium. 相似文献
14.
V. P. Kiselev S. P. Kiselev V. M. Fomin 《Journal of Applied Mechanics and Technical Physics》1994,35(2):183-192
Novosibirsk. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, No. 2, pp. 26–37, March–April, 1994. 相似文献
15.
T. A. Bodnar' 《Journal of Applied Mechanics and Technical Physics》1994,35(4):496-505
B?sk. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, No. 4, pp. 12–22, July–August, 1994. 相似文献
16.
V. P. Lebedev V. V. Lemanov S. Ya. Misyura V. I. Terekhov 《Journal of Applied Mechanics and Technical Physics》1994,35(1):49-52
Novosibirsk. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, No. 1, pp. 48–52, January–February, 1994. 相似文献
17.
Stress-deformed state of a semi-infinite ice sheet under the action of a moving load 总被引:1,自引:0,他引:1
Komsomol'sk on Don. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fiziki, No. 5, pp. 112–117, September–October,
1994. 相似文献
18.
In the last 30 years, some authors have been studying several classes of boundary value problems (BVP) for partial differential
equations (PDE) using the method of reduction to obtain a difference equation with continuous argument which behavior is determined
by the iteration of a one-dimensional (1D) map (see, for example, Romanenko, E. Yu. and Sharkovsky, A. N., International Journal of Bifurcation and Chaos 9(7), 1999, 1285–1306; Sharkovsky, A. N., International Journal of Bifurcation and Chaos 5(5), 1995, 1419–1425; Sharkovsky, A. N., Analysis Mathematica Sil 13, 1999, 243–255; Sharkovsky, A. N., in “New Progress in Difference Equations”, Proceedings of the ICDEA'2001, Taylor and Francis, 2003, pp. 3–22; Sharkovsky, A. N., Deregel, Ph., and Chua, L. O., International Journal of Bifurcation and Chaos 5(5), 1995, 1283–1302; Sharkovsky, A. N., Maistrenko, Yu. L., and Romanenko, E. Yu., Difference Equations and Their Applications, Kluwer, Dordrecht, 1993.). In this paper we consider the time-delayed Chua's circuit introduced in (Sharkovsky, A. N., International Journal of Bifurcation and Chaos 4(5), 1994, 303–309; Sharkovsky, A. N., Maistrenko, Yu. L., Deregel, Ph., and Chua, L. O., Journal of Circuits, Systems and Computers 3(2), 1993, 645–668.) which behavior is determined by properties of one-dimensional map, see Sharkovsky, A. N., Deregel, Ph.,
and Chua, L. O., International Journal of Bifurcation and Chaos 5(5), 1995, 1283–1302; Maistrenko, Yu. L., Maistrenko, V. L., Vikul, S. I., and Chua, L. O., International Journal of Bifurcation and Chaos 5(3), 1995, 653–671; Sharkovsky, A. N., International Journal of Bifurcation and Chaos 4(5), 1994, 303–309; Sharkovsky, A. N., Maistrenko, Yu. L., Deregel, Ph., and Chua, L. O., Journal of Circuits, Systems and Computers 3(2), 1993, 645–668. To characterize the time-evolution of these circuits we can compute the topological entropy and to distinguish
systems with equal topological entropy we introduce a second topological invariant. 相似文献
19.
Yu. G. Gubarev 《Journal of Applied Mechanics and Technical Physics》1994,35(4):546-555
Novosibirsk. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, No. 4, pp. 68–77, July–August, 1994 相似文献
20.
N. I. Shishkin 《Journal of Applied Mechanics and Technical Physics》2007,48(2):145-152
The seismic energy transferred to an elastic half-space as a result of a contact explosion and a meteorite impact on a planet’s
surface is estimated. The seismic efficiency of the explosion and impact are evaluated as the ratio of the energy of the generated
seismic waves to the energy of explosion or the kinetic energy of the meteorite. In the case of contact explosions, this ratio
is in the range of 10−4–10−3. In the case of wide-scale impact effects, where the crater in the planet’s crust is produced in the gravitational regime,
a formula is derived that relates the seismic efficiency of an impact to its determining parameters.
__________
Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 48, No. 2, pp. 3–12, March–April, 2007. 相似文献