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Work-in-Progress: Visualization and Simulation of the Thermal Boundary Layer around a Cylinder as a Classroom Demonstration

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2017 ASEE Annual Conference & Exposition


Columbus, Ohio

Publication Date

June 24, 2017

Start Date

June 24, 2017

End Date

June 28, 2017

Conference Session

Work-in-Progress Oral Session

Tagged Division

Chemical Engineering

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Paper Authors


Negar Beheshti Pour Washington State University

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Negar Beheshti Pour received her B.S. in chemical Engineering at Tehran University where she also taught as a teacher assistant. She is currently working towards a Ph.D. in Chemical Engineering at Washington State University under the supervision of Dr. Van Wie and Dr. Thiessen. In addition to her chemical engineering research into phase separation in microgravity, Negar is interested in engineering education and new pedagogies. Now she is working on the low-cost version of desktop learning modules.

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David B. Thiessen Washington State University Orcid 16x16

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David B.Thiessen received his Ph.D. in Chemical Engineering from the University of Colorado in
1992 and has been at Washington State University since 1994. His research interests include fluid
physics, acoustics, and engineering education.

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Bernard J. Van Wie Washington State University

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Prof. Bernard J. Van Wie received his B.S., M.S. and Ph.D., and did his postdoctoral work at the University of Oklahoma where he also taught as a visiting lecturer. He has been on the Washington State University (WSU) faculty for 34 years and for the past 20 years has focused on innovative pedagogy research and technical research in biotechnology. His 2007-2008 Fulbright exchange to Nigeria set the stage for him to receive the Marian Smith Award given annually to the most innovative teacher at Washington State University and in 2016 he received the inaugural WSU Teaching Innovation a

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This paper presents the educational application of shadowgraphy in visualizing thermal boundary layers. The thermal boundary layer concept is an abstract topic due to the difficulty of direct observation. In this work, we use a collimated light beam for illumination and a camera with a telecentric lens to visualize the thermal boundary layer that forms around a heated copper tube placed in a tank containing cold still water. The video clearly shows the initial diffusive growth of the boundary layer and the subsequent onset of buoyant convection. Then when flow is initiated, a thinning of the boundary layer on the upstream side of the cylinder is clearly visible. After showing video clips in two sections of an Introduction to Transport Phenomena course student feedback was very positive; they found it interesting and helpful. We believe this visual representation aids in learning and can actively engage students in the learning process.

I would like to present in a poster session.

Beheshti Pour, N., & Thiessen, D. B., & Van Wie, B. J. (2017, June), Work-in-Progress: Visualization and Simulation of the Thermal Boundary Layer around a Cylinder as a Classroom Demonstration Paper presented at 2017 ASEE Annual Conference & Exposition, Columbus, Ohio. 10.18260/1-2--29191

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