On-line calculation model of thermal stress of steam turbine rotor based on integrated modular modeling software

The formula of two-dimensional temperature and thermal stress of steam turbine rotor is derived by using energy-balance method. The on-line calculation model of two dimensional temperature and thermal stress of steam turbine rotor is built based on integrated modular modeling software and engineering modularized method. A simulation experiment has been given to compare with the result computed by finite-element method on the same condition. The result shows this model has gained high accuracy and speed. The modularized structure of simulation model makes it very convenient that modification of physical dimension of the turbine rotor and the grids, so this model can be used for analyzing thermal state of other axis-symmetry object having similar boundary condition.