000			03275nam a2200445 4500
005			20260520005734.0
008			260224s2000 xxu ing
041			_aInglés
210			_aETCE/OMAE 2000 ; ETCE2000/PROD-10028
245	0	0	_aBubble Analogy and stabilization of core-annular flow
260			_aNew Orleans _b _c2000
270			_a14/06/2012 ; 10/01/03
500			_aArtículo publicado en la página web de la Faculdade de Engenharia Mecânica da Universidade Estadual de Campinas, Brasil ; Sitio visitado en noviembre de 2002 ; Navegadores de Internet ; Adobe Acrobat (PDF)
520			_aTranscripción del abstract publicado por el autor: A theory for the stabilization of annular liquid-liquid flow (i.e. core annular flow) in a horizontal pipe, when the two liquids have different densities and viscosities, is proposed. The analysis of the momentum equation in the cross section of the flow, including the interfacial tension effect, allows an interesting analogy between the peripheral flow around the core and the flow surrounding an ascending bubble. Based upon this mechanism, it is suggested that the viscous and inertial forces in core annular can be combined in a single drag force, which is analogous to the drag in bubbles. By modeling the action of the lubricating forces in this way, an equation is obtained which describes the interface shape. Results for the height-to-width aspect ratio of the core are compared with laboratory measurements done by the author for a heavy oil-water core annular flow in a horizontal pipe. A criterion for stabilization is proposed.
942			_cCONGTP
100	1		_aBannwart, Antonio C. _912136
110	2		_aAmerican Society of Mechanical Engineers, ASME _919000
110	2		_aOcean & Mechanical Arctic Engineering, OMAE _919001
111	2		_aETCE/OMAE 2000 Joint Conference: Energy for the New Milenium ( 2000 Feb 14-17 : New orleans) _919002
111	2		_aEnergy Sources Technology Conference and Exhibition (23rd : 2000 feb 14-17 : New Orleans) _919003
111	2		_aInternational OMAE Conference for Ocean, Offshore and Arctic Engineers (19th : 2000 feb 14-17 : New Orleans) _919004
650		0	_aProducción de petróleo y gas _91020
650		0	_aExtracción de petróleo _91575
650		0	_aYacimientos de petróleos pesados _95472
650		0	_aExtracción artificial _92326
650		0	_aEstimulación de pozos _980
650		0	_aModelos de simulación _91403
650		0	_aDinámica de fluidos _960
650		0	_aDesplazamiento inmiscible _94135
650		0	_aFlujo en el espacio anular _93160
650		0	_aMedición de presión _969
650		0	_aGradientes de presión _98408
710	2		_aAmerican Society of Mechanical Engineers, ASME _919000
710	2		_aOcean & Mechanical Arctic Engineering, OMAE _919001
711	2		_aETCE/OMAE 2000 Joint Conference: Energy for the New Milenium ( 2000 Feb 14-17 : New orleans) _919002
711	2		_aEnergy Sources Technology Conference and Exhibition (23rd : 2000 feb 14-17 : New Orleans) _919003
711	2		_aInternational OMAE Conference for Ocean, Offshore and Arctic Engineers (19th : 2000 feb 14-17 : New Orleans) _919004
999			_c142838 _d142838
856			_uhttp://www.fem.unicamp.br/~bannwart/10028.pdf