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Bends are widely used in pipelines carrying single- and two-phase fluids in both ground and space applications. In particular, they play more important role in space applications due to the extreme spatial constraints. In the present study, a set of experimental data of two-phase flow patterns and their transitions in a 90degrees bend with inner diameter of 12.7 mm. and curvature radius of 76.5 mm at microgravity conditions are reported. Gas and liquid superficial velocities are found to range from (1.0 similar to 23.6) m/s for gas and (0.09 similar to 0.5) m/s for liquid, respectively. Three major flow patterns, namely slug, slug-annular transitional, and annular flows, are observed in this study. Focusing on the differences between flow patterns in bends and their counterparts in straight pipes, detailed analyses of their characteristics are made. The transitions between adjoining flow patterns are found to be more or less the same as those in straight pipes, and can be predicted using Weber number models satisfactorily. The reasons for such agreement are carefully examined.

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Resumen: El presente trabajo busca proponer una reflexión acerca de los vínculos entre memoria, poesía y subjetividad en la escritura de la poeta argentina Alicia Genovese (Lomas de Zamora, Provincia de Buenos Aires, Argentina, 1953), lo que se lleva a cabo desde un diálogo intertextual entre su producción ensayística y su escritura poética. A los fines de exponer este argumento, me detendré tanto en sus ensayos como en esa zona de su poesía que Genovese desarrolla desde finales de la década de 1990 en adelante, donde el tema de la memoria emerge con mucha claridad e insistencia. Se trata de un rasgo, por otra parte, que no podemos comprender cabalmente sin referir al contexto de producción de la escritura, el que aparece marcado no solo por la manifestación de la profunda crisis socio-política que eclosionaría en 2001, sino por el desarrollo de intensos debates en torno a las memorias sobre el pasado reciente de nuestro país.