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CFD calculations of indicial lift responses for bluff bodies
Turbelin, Gregory,Gibert, Rene Jean Techno-Press 2002 Wind and Structures, An International Journal (WAS Vol.5 No.2
Two-dimensional formulations for wind forces on elongated bodies, such as bridge decks, are reviewed and links with expressions found in two-dimensional airfoil theory are pointed out. The present research focus on indicial lift responses and admittance functions which are commonly used to improve buffeting analysis of bluff bodies. A computational fluid dynamic (CFD) analysis is used to derive these aerodynamic functions for various sections. The numerical procedure is presented and results are discussed which demonstrate that the particular shapes of these functions are strongly dependent on the evolution of the separated flows around the sections at the early stages.
TYPE TROPHIQUE ET RYTHME NUTRITIONNEL DE QUELQUES EUPHAUSIACES MEDITERRANEENS
YOON,Won Duk,PATRITI,Gibert 嶺南大 海洋科學硏究所 1995 Marine Nature Vol.4 No.1
We have undertaken the nutritional behaviour of six species of euphausiacea by study of guts contents during diel migration, throughout 24 hours. This study has been carry out during Cyaflux mission (part of the Ecomarge program) in northwestern Mediterranean sea. In early times we have considered the trophic type and feeding rythm. Species have an omnivorous diet and may be adapted to the environmental food conditions. None is strictly phytophagous and only Stylocheiron longicorne G. O. Sars, 1883 and Stylocheiron abbreviatum G. O. Sars, 1883 have a carnivorous tendancy. It seems that there is relation between migration and feeding rythm. RESUME: Le comportement alimentaire d'euphausiaces recueillis lors de la mission Cyaflux (dans le cadre du programme Ecomarge) en Mediterranee nord-occidentale, au cours d'un cycle de 24h a ete apprehende lors de la migration verticale de six especes par l'etude des contenus stomacaux et envisage sous la forme, dans un premier temps, du type trophique dt du rythme de nutrition. Les milieu. Neanmoins aucune ne s'est averee strictement phytophage et seules Stylocheiron longicorne G. O. Sars, 1883 et Stylocheiron abbreviatum G. O. Sars, 1883 auraient des tendances carnivores. Ⅱ semble qu'ily ait une relation entre migration et rythme nutritionnel.