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A model for predicting vibration series of turbogenerator unit is proposed by combining ANNs techniques with non-linear phase space reconstruction. Such established model doesn’t make any hypothesis to history data, but reproduces the dynamic specific of attractor by phase space reconstruction. ANNs architecture to which the prediction model applys is discussed. The influences of embedding dimension...
Based on spherical cap-shaped nucleation process at heterogeneous particles surface, a numerical model of heterogeneous condensation flow was established. The condensing flow with heterogeneous condensation in a nozzle and a turbine cascade was numerically studied. Results shows in heterogeneous condensation, if there are enough heterogeneous particles, the steam can focus on the nuclear and begin...
A method for controlling homogeneous nucleation and reducing degree of flow separation in high-speed transonic wet steam flow is presented. The spontaneous nucleation flow in a turbine cascade was numerically studied. The model was implemented within a full Navier-Stokes viscous flow solution procedure, and the process of condensation was calculated by the quadrature method of moments which show good...
This paper summarized the present state of measuring water ratio of turbine oil. Owing to the present measuring methods in a power plant it is not possible to adapt the demands of the real-time measurement of water ratio of turbine oil, this paper puts forward a method that can measure the water ratio of the turbine oil continuously based on the method of resonant cavity perturbation. We also designed...
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