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

29th IAHR Symposium on Hydraulic Machinery and Systems

Gagnon, M.^1 ; Immarigeon, A.^2 ; Nicolle, J.^1 ; Morissette, J.-F.^1

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;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/240/7/072005/pdf
DOI  :  10.1088/1755-1315/240/7/072005

来源: IOP

【 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.