Lift Generation in Soft Porous Media: From Red Cells to Skiing to a New Concept for a Train Track - Couverture souple

Wu, Qianhong

 
9783639146554: Lift Generation in Soft Porous Media: From Red Cells to Skiing to a New Concept for a Train Track
Couverture souple
ISBN 10 : 3639146557 ISBN 13 : 9783639146554
Editeur : VDM Verlag, 2009

Synopsis

A red blood cell is about eight microns in diameter, but it fits through capillary openings of only five or six microns in diameter without showing any wear and tear. It manages this tight squeeze about 100,000 times in its lifetime. How could there be so little friction? A 70 kg human being can glide over a compressed snow layer without sinking to the base, however, when the motion is arrested, the skier would sink to the base. Why is that? In fluid mechanics it is highly unexpected for there to be a dynamic similarity between the motions of objects that differ in mass by many orders of magnitude. Yet this is exactly what has been discovered in comparing the motion of a red cell in a capillary, the compression of fresh snow during skiing and the passage of a train car over a track that has the mechanical properties of a goose down pillow. These diverse applications are unified in this book. The book introduces a new concept that is of extraordinarily broad interest and could have important application in the design of soft porous bearings with greatly increased lubrication pressures and long life.

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Présentation de l'éditeur

A red blood cell is about eight microns in diameter, but it fits through capillary openings of only five or six microns in diameter without showing any wear and tear. It manages this tight squeeze about 100,000 times in its lifetime. How could there be so little friction? A 70 kg human being can glide over a compressed snow layer without sinking to the base, however, when the motion is arrested, the skier would sink to the base. Why is that? In fluid mechanics it is highly unexpected for there to be a dynamic similarity between the motions of objects that differ in mass by many orders of magnitude. Yet this is exactly what has been discovered in comparing the motion of a red cell in a capillary, the compression of fresh snow during skiing and the passage of a train car over a track that has the mechanical properties of a goose down pillow. These diverse applications are unified in this book. The book introduces a new concept that is of extraordinarily broad interest and could have important application in the design of soft porous bearings with greatly increased lubrication pressures and long life.

Biographie de l'auteur

Qianhong Wu is an Assistant Professor at Villanova University, USA, and the director of the Villanova Cellular Biomechanics and Sport Science Laboratory. His research interests center on multi-scale transport phenomena: from cellular biomechanics, to sports sciences, and to fluid dynamics. He has published extensively on these topics.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
VDM Verlag
Date d'édition
2009
Langue
anglais
ISBN 10 
3639146557
ISBN 13 
9783639146554
Reliure
Broché
Nombre de pages
120
Coordonnées du fabricant
non disponible
Personne responsable
non disponible