Analysis of the Influence of Heat Flux on One Dimensional Compressible Flow in Parallel Disc Clearance
Based on the analysis results of one-dimensional compressible ideal flow in parallel clearance of high-pressure circular aerostatic bearing,the distribution laws of Mach number,static temperature and static pressure of one-dimensional model on the symmetry line of gas film in parallel air film area are obtained by theoretical deduction and programming using numerical calculation method,in which the area variation,wall friction and heat input in parallel disc clearance are considered.The results show that for the one-dimensional model,the Mach number on the symmetry line of the gas film always shows a decreasing trend,the static temperature always shows an increasing trend,and the static pressure shows a rising trend first and then a slowly decreasing trend.In the whole parallel film clearance,the heat input will lead to a reduction of the Mach number decline rate.In the condition of modest heat flux,Mach number is slightly affected by heat flux.However,it shows comparatively evident effect on Mach number in the condition of higher heat flux.The static temperature is greatly affected by the heat input,and the higher the heat flux,the more obvious the temperature rise.At the same time,the static pressure is little affected by the heat input.
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