The condition of Marxist college ethnic areas will directly affect how the beliefs of national unity and stability of the region, the survival and development by leaps and bounds and the Chinese nation. In order to in...The condition of Marxist college ethnic areas will directly affect how the beliefs of national unity and stability of the region, the survival and development by leaps and bounds and the Chinese nation. In order to internalize the Marxist belief in the heart and outside of the line, it needs to start from the cognitive, emotional, and behavioral levels.展开更多
The S2 flow path design method of the transonic compressor is used to design the one stage fan in order to replace the original designed blade cascade which has two-stage transonic fan rotors.In the modification desig...The S2 flow path design method of the transonic compressor is used to design the one stage fan in order to replace the original designed blade cascade which has two-stage transonic fan rotors.In the modification design,the camber line is parameterized by a quartic polynomial curve and the thickness distribution of the blade profile is controlled by the double-thrice polynomial.Therefore,the inlet flow has been pre-compressed and the location and intensity of the shock wave at supersonic area have been controlled in order to let the new blade profiles have better aerodynamic performance.The computational results show that the new single stage fan rotor increases the efficiency by two percent at the design condition and the total pressure ratio is slightly higher than that of the original design.At the same time,it also meets the mass flow rate and the geometrical size requirements for the modification design.展开更多
文摘The condition of Marxist college ethnic areas will directly affect how the beliefs of national unity and stability of the region, the survival and development by leaps and bounds and the Chinese nation. In order to internalize the Marxist belief in the heart and outside of the line, it needs to start from the cognitive, emotional, and behavioral levels.
基金support from National Natural Science Foundation of China (Grant No.50706009)
文摘The S2 flow path design method of the transonic compressor is used to design the one stage fan in order to replace the original designed blade cascade which has two-stage transonic fan rotors.In the modification design,the camber line is parameterized by a quartic polynomial curve and the thickness distribution of the blade profile is controlled by the double-thrice polynomial.Therefore,the inlet flow has been pre-compressed and the location and intensity of the shock wave at supersonic area have been controlled in order to let the new blade profiles have better aerodynamic performance.The computational results show that the new single stage fan rotor increases the efficiency by two percent at the design condition and the total pressure ratio is slightly higher than that of the original design.At the same time,it also meets the mass flow rate and the geometrical size requirements for the modification design.
