Taking the rotor of steam turbine in a subcritical 300MW unit as the object

the surface heat transfer coefficients of the rotor calculated by Westinghouse and former Soviet empirical formula 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 600MW unit.The results show that

the relative 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 rotor

and the calculation speed can be ensured.