Correlation between numerical simulations and measurements to assess uncertainties: a case study on a hydroelectric runner

[摘要] For fatigue reliability analysis, we need an estimate of the structure response and uncertainty at critical locations where often direct observation from a measurement campaign cannot be obtained. At these critical locations, two types of information are required: static amplitudes and dynamic ranges. In this work, we assume a linear correlation between simulated and measured values to estimate the information needed at critical locations on the runner blades. The proposed methodology is illustrated using the data from a six-blade propeller runner. The methodology enables one to easily transpose information from observed values to a critical location and assess uncertainty for fatigue reliability analysis.

[发布机构] Institut de Recherche d'Hydro-Québec (IREQ), Varennes; QC; J3X 1S1, Canada^1;Hydro-Québec, Montréal; QC; H2Z 1A4, Canada^2

[关键词] Critical location;Direct observations;Linear correlation;Measured values;Measurement campaign;Observed values;Simulations and measurements;Structure response