Researching oscillatory movement of a gas gimbal in the rotor of turbo-refrigerating and gas expansion machines. Part II. Pressure fluctuations in the nozzles of a feeding system operating in a supercritical mode
UDC 533.2+534.14, 67.05
Bulat Pavel V, Uskov V.N.
Abstract
An oscillation mode is discussed in the gap between the stator and the rotor of an aerostatic bearing when underexpanded supersonic jets from the nozzles of a feeding system are interacting with the rotor’s surface. Presented here are the results of the research on oscillation modes, their origins, mechanisms and frequency response characteristics of pressure pulsations in the working medium feeding system and the lubricant film on a gas bearing.
Keywords: aerostatic bearing, hybrid gas bearing, critical frequency, RANS equation, pneumatic hammer mode, flow rate fluctuations.
Researching oscillatory movement of a gas gimbal in the rotor of turbo-refrigerating and gas expansion machines. Part II. Pressure fluctuations in the nozzles of a feeding system operating in a supercritical mode
Abstract
An oscillation mode is discussed in the gap between the stator and the rotor of an aerostatic bearing when underexpanded supersonic jets from the nozzles of a feeding system are interacting with the rotor’s surface. Presented here are the results of the research on oscillation modes, their origins, mechanisms and frequency response characteristics of pressure pulsations in the working medium feeding system and the lubricant film on a gas bearing.
Keywords: aerostatic bearing, hybrid gas bearing, critical frequency, RANS equation, pneumatic hammer mode, flow rate fluctuations.
Русский
English
