Resumo

ALVAREZ-NARANJO, Juan-E.; QUINTERO-RIAZA, Héctor-F.  e  LOPEZ-LOPEZ, Juan-F.. Nonlinear and chaotic behavior in a centrifugal pump operating in state of cavitation. Ingeniería Mecánica [online]. 2015, vol.18, n.2, pp. 109-115. ISSN 1815-5944.

Improving accuracy in the diagnosis and prognosis of industrial maintenance has been a constant task of research to preserve the continuous operation of machines. Today is necessary to improve this technique for avoiding reductionism that the traditional linear techniques employ. In this paper it is studied the centrifugal pump cavitation state. To simulate the phenomenon, a test bed is constructed and the fluid is blocked toward the impeller of pump by the suction valve, the time signals were recorded using an accelerometer. Subsequently, a chaotic nonlinear study was used to represent the geometry in the phase space and validation was performed with the data recording operation of the centrifugal pump without cavitation and with maximum efficiency. The results showed that the system dynamics is non-linear and chaotic, and the cavitation is represented with a characteristic geometry.

Palavras-chave : centrifugal pump; cavitation; chaos; dynamic non-linear; phase space; time serie.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )