On-site calibration of a phase fraction meter by an inverse technique



Título del documento: On-site calibration of a phase fraction meter by an inverse technique
Revista: Journal of the Brazilian Society of Mechanical Sciences
Base de datos: PERIÓDICA
Número de sistema: 000312127
ISSN: 0100-7386
Autores: 1
1
Instituciones: 1Universidade de Sao Paulo, Nucleo de Engenharia Termica e Fluidos, Sao Carlos, Sao Paulo. Brasil
Año:
Periodo: Nov
Volumen: 24
Número: 4
Paginación: 266-270
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés The formal calibration procedure of a phase fraction meter is based on registering the outputs resulting from imposed phase fractions at known flow regimes. This can be straightforwardly done in laboratory conditions, but is rarely the case in industrial conditions, and particularly for on-site applications. Thus, there is a clear need for less restrictive calibration methods regarding to the prior knowledge of the complete set of inlet conditions. A new procedure is proposed in this work for the on-site construction of the calibration curve from total flown mass values of the homogeneous dispersed phase. The solution is obtained by minimizing a convenient error functional, assembled with data from redundant tests to handle the intrinsic ill-conditioned nature of the problem. Numerical simulations performed for increasing error levels demonstrate that acceptable calibration curves can be reconstructed, even from total mass measured within a precision of up to 2%. Consequently, the method can readily be applied, especially in on-site calibration problems in which classical procedures fail due to the impossibility of having a strict control of all the input/output parameters
Disciplinas: Ingeniería
Palabras clave: Ingeniería de instrumentos,
Flujo multifásico,
Fracción de fase,
Medición,
Calibración,
Problemas inversos
Keyword: Engineering,
Instrumentation engineering,
Multiphase flow,
Phase fraction,
Measurement,
Calibration,
Inverse problems
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