| The constructive utilization of energy is of paramount importance in the enhancement of society's standard of living.Nuclear energy has a number of advantages that warrant its use as one of the many methods of supplying an energy-demanding world.Utilization of The modular high temperature gas cooled reactor (HTGR) to support the goal of meeting the energy demands of future in an efficient, safe and more economic and environmentally acceptable manner than the present methods of energy production and utilization. The closed cycle gas turbine using helium as work fluid, which coupled to the modular HTGR is a promising technology.Several papers and publications have discussed the performance analysis of helium turbine and axial-flow compressors. Although there are several publications on, hardly any investigations have been reported on the detailed blade design or cascade performances for such subsonic helium compressor blades. Helium's physical properties and helium cascade performances are primary foundations for aerodynamic design and performance of the helium gas compressor.This paper focus on the feasibility of using air compressor blades as helium compressor blades.Using NACA 65- (12A10) 10 compressor blades to do the numerical simulation, compare with experiment results of air subsonic cascades, and confirm the numerical simulations' validity, compare the difference and similitude between helium and air cascades performance under the same inlet conditions.The present paper obtained some similarity relationships between helium cascade flow and air cascade flow. The conclusion of this paper is, using air subsonic blades as airfoils of helium compressor, and extensive theoretical and experimental researches of air subsonic blade is feasible.The objective of this paper is to demonstrate that effective numerical simulations can provide qualitative insights into the performance and operability of helium compressor when using of air subsonic blades as airfoils.
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