Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Steam generator efficiency simulation with a multi-fidelity approach
Submission Author:
Augusto Delavald Marques , RS , Brazil
Co-Authors:
Augusto Delavald Marques, Lara Werncke Vieira, Jéssica Duarte, Julian Hunt, Paulo Smith Schneider
Presenter: Augusto Delavald Marques
doi://10.26678/ABCM.COBEM2021.COB2021-1309
Abstract
This paper presents the simulation of a real steam generator from a coal-fired power plant with a multi-fidelity model. The model’s purpose is to calculate the steam generator efficiency in different operating situations. The proposed approach combines data from an energy balance-based model, the low fidelity approach, and data from actual measurements, the high fidelity information. Fifty-four simulations with the commercial software Ebsilon composes the low fidelity dataset to be completed with seven experiments conducted in a real power plant. The two datasets are used to build a multi-fidelity model with the Co-kriging methodology, which combines the predicted system behavior by the low fidelity model with the accurate results from the high-fidelity dataset. The four cases assessed in this paper show that the maximum absolute error for the system efficiency dropped from 0.57% for the low fidelity model to 0.18% with the multi-fidelity approach.
Keywords
Multi-fidelity Model, Gaussian Process, Co-kriging, Steam Generator Model
