Measurements of the Flow in Backshroud/Casing Clearance of Precessing Centrifugal Impeller

Autor:	Yoshiki Yoshida, Yoshinobu Tsujimoto, Hideo Ohashi, Akira Saito, Shin Ishizaki
Jazyk:	angličtina
Rok vydání:	1997
Předmět:	Precessing motion Centrifugal pump Rotordynamic moment Unsteady flow Leakage flow. Engineering (General). Civil engineering (General) TA1-2040
Zdroj:	International Journal of Rotating Machinery, Vol 3, Iss 4, Pp 259-268 (1997)
Druh dokumentu:	article
ISSN:	1023-621X 1023621X
DOI:	10.1155/S1023621X97000249
Popis:	Detailed flow measurements have been made to clarify the unsteady flow in the backshroud/ casing clearance of a precessing centrifugal impeller. The unsteady pressure was integrated to obtain the fluid force moment on the precessing impeller shroud for various precessing frequencies. It was shown that the fluid force moment can become rotordynamically destabilizing for small forward precessing motion as originally found by Ohashi et al. The effects of leakage flow in the backshroud/casing clearance and a gap between impeller side plate and casing at the impeller outlet are clearly shown, and the discussions are also made based on the unsteady velocity and pressure measurements.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/ba68254e66144997bd1f20218d1c3baa Zobrazit plný text záznamu Plný text View record in DOAJ