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  • 1
    Electronic Resource
    Electronic Resource
    Three-dimensional thermal convection caused by spacecraft rotation in a rectangular enclosure with rigid walls (1998)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 10 (1998), S. 2517-2524 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The influence of the spacecraft's rotation on the convection in a nonuniformly heated fluid under microgravity conditions has been studied. This influence is determined by action of the buoyancy force generated by the resultant microacceleration vector and the inertia force related to variations in the angular rotational velocity of the spacecraft. It is shown that the solenoidal part of the resulting rotational force acting upon the nonuniformly heated fluid strongly depends on the angle between the temperature gradient at some point in the fluid and the radius vector of this point relative to the spacecraft's centroid. To minimize the influence of the spacecraft's rotation, it is necessary to make this angle close to zero. The thermal convection which could have arisen in a rectangular box with rigid walls under rotation of the Space Shuttle orbiter has been simulated numerically. It is shown that the intensity of this kind of convection may be rather appreciable. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.869767
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of variations in the angular rotational velocity of a spacecraft on thermal convection under conditions of weightlessness (1997)
    Springer
    Technical physics letters 23 (1997), S. 945-947 
    Details
    ISSN: 1090-6533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Unlike the conventional approach where it is assumed that liquid motion under conditions of weightlessness is caused by vibrations or residual quasisteady-state microaccelerations, the present paper examines convection caused by variations in the angular rotational velocity of a spacecraft. It is shown that although the level of microaccelerations caused by variations in the angular rotational velocity is extremely low for the Shuttle spacecraft, Mir space station, and unmanned spacecraft, of the order of 0.1–1 μg, the ensuing convection and nonuniformity in the impurity distribution during crystal growth may be very appreciable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1261942
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Onset of rotating stall in induction magnetohydrodynamic flows (1998)
    Springer
    Technical physics 43 (1998), S. 673-677 
    Details
    ISSN: 1090-6525
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The possible onset of unsteady induction magnetohydrodynamic (MHD) flows in wide channels or in channels of annular cross section is discovered on the basis of a proposed two-dimensional mathematical model. Such secondary flows have the character of rotating stall, which was previously known in high-pressure axial compressors. The existing experimental data confirm the possibility of observing this phenomenon, which can be interpreted as a new type of symmetry loss. It is shown for certain relations between the parameters that the system has a lower margin of stability against disturbances of the rotating-stall type than against steady-state disturbances. In particular, a loss of stability of a steady uniform flow can occur on the descending portion of the external characteristic of the machine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1259052
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  • 4
    Electronic Resource
    Electronic Resource
    Cylindrical MHD induction device in the “ideal pressure source” regime (1997)
    Springer
    Technical physics 42 (1997), S. 591-594 
    Details
    ISSN: 1090-6525
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The causes for the onset of a specific operating regime of MHD induction devices which arises after a loss of stability of the uniform flow are investigated. A modification of the original method of studying singularly perturbed dynamical systems in the neighborhood of a bifurcation point is used to construct the asymptotic behavior of the characteristic pressure for various limiting cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1258582
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  • 5
    Electronic Resource
    Electronic Resource
    Slow nonisothermal flow of a viscous gas between two coaxial disks (1987)
    Springer
    Journal of applied mechanics and technical physics 28 (1987), S. 200-202 
    Details
    ISSN: 1573-8620
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00918717
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