Calculation of the helium thermodynamic state in rotating cryostats

The present paper contains basic essential data for the design of rotating cryostats. The effect of the filling factor, angular velocity of rotation, reduced temperature at the axis of rotation and the method of helium supply to a rotating cryostat on temperature, pressure and density distribution is discussed. The maximum sub-cooling and distance from the axis of rotation at which the critical pressure is reached is studied theoretically. For vapour phase quasi-saturation there is a good agreement between the calculated data on temperature distribution and the experimental results available.