This diagram depicts the arrangement of riblets on the inside surface of a pipe, for a study conducted by Ohio State University chemical engineer Konrad Koeltzsch and his colleagues from the Dresden University of Technology in Germany. [Graphic courtesy of Ohio State University.]
Ohio State University chemical engineer Konrad Koeltzsch and his colleagues from the Dresden University of Technology in Germany studied how the angle of small grooves, called riblets, affect the flow of fluids such as air or water. The researchers lined a pipe with this grooved film, which was created by technology company 3M. Each V-shaped groove measures 150 micrometers across -- approximately twice the width of a human hair. [Photo courtesy of Ohio State University.]
A study of airflow in pipes may help solve a mystery concerning the ears of fast-swimming sharks. The results could also lead to new audio technologies, according to an engineer at Ohio State University.
Konrad Koeltzsch, a postdoctoral researcher in chemical engineering and the Alexander von Humboldt Fellow at Ohio State, and his colleagues investigated grooves in sharkskin called riblets.
Koeltzsch began to study sharkskin while he was a postdoctoral researcher at the Dresden University of Technology in Germany. He worked with Albrecht Dinkelacker, a German researcher who pioneered the study of riblets, and Dresden professor Roger Grundmann. The three published their results in a recent issue of the journal Experiments in Fluids.
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