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Measurements of high velocity gradient flow using bubble tracers in a cavitation tunnel / Bu-Geun Paik in Transactions of the ASME . Journal of fluids engineering, Vol. 131 N° 9 (Septembre 2009) 

Public ISBD [article]  in Transactions of the ASME . Journal of fluids engineering > Vol. 131 N° 9 (Septembre 2009) . - 10 p. Titre : Measurements of high velocity gradient flow using bubble tracers in a cavitation tunnel Type de document : texte imprimé Auteurs : Bu-Geun Paik, Auteur ; Kyung-Youl Kim, Auteur ; Jong-Woo Ahn, Auteur Année de publication : 2009 Article en page(s) : 10 p. Note générale : fluids enginering Langues : Anglais (eng) Mots-clés : propeller  wake;  bubble  tracers;  particle  image  velocimetry  technique;  cavitation  tunnel Résumé : The objective of the present study is to investigate propeller wake using particle image velocimetry (PIV) technique with bubble type of tracers, naturally generated by the decrease in the static pressure in a cavitation tunnel. The bubble can be grown from the nuclei melted in the water tunnel and the size of bubbles is changed by varying the tunnel pressure. A series of experiments are conducted in the conditions of the uniform and high velocity gradient flows to find out the characteristics of bubble tracers and compared the measurement results using bubbles with those using solid particles. Bubbles showed good trace ability in the region of 15 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/issue.aspx?journalid=122 [...] [article] Measurements of high velocity gradient flow using bubble tracers in a cavitation tunnel [texte imprimé] / Bu-Geun Paik, Auteur ; Kyung-Youl Kim, Auteur ; Jong-Woo Ahn, Auteur . - 2009 . - 10 p. fluids enginering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 131 N° 9 (Septembre 2009) . - 10 p. Mots-clés : propeller  wake;  bubble  tracers;  particle  image  velocimetry  technique;  cavitation  tunnel Résumé : The objective of the present study is to investigate propeller wake using particle image velocimetry (PIV) technique with bubble type of tracers, naturally generated by the decrease in the static pressure in a cavitation tunnel. The bubble can be grown from the nuclei melted in the water tunnel and the size of bubbles is changed by varying the tunnel pressure. A series of experiments are conducted in the conditions of the uniform and high velocity gradient flows to find out the characteristics of bubble tracers and compared the measurement results using bubbles with those using solid particles. Bubbles showed good trace ability in the region of 15 En ligne : http://fluidsengineering.asmedigitalcollection.asme.org/issue.aspx?journalid=122 [...]