Is this project an undergraduate, graduate, or faculty project?

Undergraduate

group

What campus are you from?

Daytona Beach

Authors' Class Standing

Angie Castillo Senior Jesse Ramos Freshmen

Lead Presenter's Name

Angie Castillo

Faculty Mentor Name

Dr. Ghada Ellithy

Abstract

Shear stresses are produced when a fluid is flowing along a solid boundary layer. Shear stress measurements can be used to evaluate sediment and soil erosion transportation in natural bodies of water, like rivers. With this information, engineers improve risk assessment evaluation on earthen water- retaining structures and mitigate the dangers of overtopping.

Inside the COAS Wave Lab water tank, a flume was built with a 5% slope, simulating a riverbed at an angle. At the 20ft marker, three shear stress sensors were installed in a working envelope. AC Drivers were used to control the flow from four pumps that provided the water flow on the wall shear sensors. The experiment data is collected using a LabView code and then processed in a MATLAB code that provides graphs and CSV files. A magnetic flowmeter and Micro PIV read by a laser and highspeed camera are used to collect velocity data on the velocity of the flow and compare it with the information gathered on the shear sensors. Multiple tests have been conducted to collect the best sample data sets from the experiment.

A successful data sets will be used to create a Computational Fluid Dynamics (CFD) model using COMSOL Multiphysics. This model will demonstrate the flow velocity and wall shear stress ranges at a given flow rate, variable turbulence and roughness of the boundary layers.

Did this research project receive funding support from the Office of Undergraduate Research.

Yes, SURF

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Flume Experiment Evaluating Shear Stresses Under Turbulent Flowing Conditions

Shear stresses are produced when a fluid is flowing along a solid boundary layer. Shear stress measurements can be used to evaluate sediment and soil erosion transportation in natural bodies of water, like rivers. With this information, engineers improve risk assessment evaluation on earthen water- retaining structures and mitigate the dangers of overtopping.

Inside the COAS Wave Lab water tank, a flume was built with a 5% slope, simulating a riverbed at an angle. At the 20ft marker, three shear stress sensors were installed in a working envelope. AC Drivers were used to control the flow from four pumps that provided the water flow on the wall shear sensors. The experiment data is collected using a LabView code and then processed in a MATLAB code that provides graphs and CSV files. A magnetic flowmeter and Micro PIV read by a laser and highspeed camera are used to collect velocity data on the velocity of the flow and compare it with the information gathered on the shear sensors. Multiple tests have been conducted to collect the best sample data sets from the experiment.

A successful data sets will be used to create a Computational Fluid Dynamics (CFD) model using COMSOL Multiphysics. This model will demonstrate the flow velocity and wall shear stress ranges at a given flow rate, variable turbulence and roughness of the boundary layers.

 

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