CAJ | 학술논문

以某亚临界300 MW机组汽轮机转子为例，将基于CFD & Fluent软件采用耦合数值计算的转子换热系数作为理论值，与采用西屋及前苏联经验公式的计算结果进行比较，提出了基于西屋公式的汽轮机转子表面换热系数修正公式.利用该公式对亚临界300 MW机组和超临界600 MW机组汽轮机转子表面换热系数进行修正.研究结果表明：西屋及前苏联经验公式的计算结果与理论值的相对误差较大，且前苏联公式计算结果偏差更明显；按照本文修正公式对西屋公式的计算结果进行修正后，与理论值的相对误差降至2．4％~27％；对于同一转子可采用相同的修正系数，且能保证较快的计算速度.
이모아림계300 MW궤조기륜궤전자위례，장기우CFD & Fluent연건채용우합수치계산적전자환열계수작위이론치，여채용서옥급전소련경험공식적계산결과진행비교，제출료기우서옥공식적기륜궤전자표면환열계수수정공식.이용해공식대아림계300 MW궤조화초림계600 MW궤조기륜궤전자표면환열계수진행수정.연구결과표명：서옥급전소련경험공식적계산결과여이론치적상대오차교대，차전소련공식계산결과편차경명현；안조본문수정공식대서옥공식적계산결과진행수정후，여이론치적상대오차강지2．4％~27％；대우동일전자가채용상동적수정계수，차능보증교쾌적계산속도.
Taking the rotor of steam turbine in a subcritical 300 MW unit as the object,the surface heat transfer coefficients of the rotor calculated by Westinghouse and former Soviet empirical for-mula were compared with that obtained by coupling numerical method,which was regarded as the theoretical value in this paper,on the basis of the CFD & Fluent software.Moreover,correction formula for surface heat transfer coefficient of the rotor obtained by the Westinghouse empirical formula was proposed and applied in a supercritical 600 MW unit.The results show that,the rela-tive error between the Westinghouse (former Soviet)formula result and the theoretical value is large,and the error between the former Sovient formula result and the theoretical value is more obvious.After using the proposed correction formula to modify the Westinghouse formula result, the relative error of the rotor surface heat transfer coefficient between the modified value and the theoretical value dropped to 2.4%-27%.A correction coefficient can be applied to the same ro-tor,and the calculation speed can be ensured.