Orel, Orel, Russian Federation
The efficiency increase at minimum dimensions of movable turbosets is achieved at the expense of maximum admissible values of rotation frequencies (up to hundreds of thousands of rpm). At present as promising bearings with an elastic surface are tulip gas bearings. The advantages of these tulip gas bearings are the following: the capacity to selfadjustment, capacity for work under conditions of thermal deformations and at a certain gas pollution fed for lubrication. The computation of tulip gas bearings supposes a joint solution of the problems of gas dynamics, thermal physics, and theory of elasticity. The function of bending included in the equation of gap is calculated through common equations of elasticity theory for corresponding solids and in the totality with boundary conditions gives a complete description of elastic surfaces in a friction bearing. As lubrication material in gas bearings with elastic elements air is mostly used. In addition, it is possible to use lowviscous cryogenic liquids, for instance, neon. The comparison of thermal physical properties of air and lowviscous cryogenic liquid (neon) witnesses of neon application possibilities, but only at temperature of below 150°K at which its viscosity is equal approximately to the viscosity of air under normal conditions.
tulip gas bearings, low-viscous cryogenic liquids, corrugated element, thermal and physical properties, simulator
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