Abstract：
:The blood flow immediately adjacent to the wall of a blood vessel or an artificial surface is of great interest. This flow defines the shear stress at the wall and is known to have a great physiological importance. The use of models is a viable method to investigate this flow. However, even in models the shear stress at the wall is difficult to assess. A new optical method is based on transparent models and uses particles in the model fluid, which are only visible near the wall. This is achieved with a model fluid having a defined opacity. This fluid obscures particles in the center of the models, but permits the observation and recording of particles close to the wall. The method has been applied for Hagen-Poiseuille flow and for the likewise well researched flow in a tube with a sudden expansion.
journal_name
Biorheologyjournal_title
Biorheologyauthors
Affeld K,Kertzscher U,Goubergrits Lsubject
Has Abstractpub_date
2002-01-01 00:00:00pages
485-9issue
3-4eissn
0006-355Xissn
1878-5034journal_volume
39pub_type
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