Intended Learning Outcomes for Marine Hydrodynamics (2.016)

Course Instructor: Professor Alexandra Techet, Mechanical Engineering

Course Overview

This advanced undergraduate course covers the development of the fundamental equations of fluid mechanics for several areas of marine hydrodynamics and the application of these principles to the solution of engineering problems. Hydrodynamics concepts such as lift and drag forces, laminar and turbulent flows, added mass, linear surface waves, and propagation phenomena are highlighted through hands-on laboratory projects. These exercises help students achieve the intended learning outcomes of the course.

The table below highlights some of the outcome-activity pairings.

Intended Learning Outcome

Students will be able to…

Teaching/Learning Activity

1. Experimentally determine the metacentric height of a barge.

2. Describe how hull shape and center of mass can affect metacentric height.

Students measure the heeling angle versus heeling moment for several different model hulls by placing a weight offset from the centerline of the ship.  Students use the results to calculate the metacentric height of the barge.

3. Sketch streamlines for a given velocity field.

For each of several flows (source, doublet, ideal vortex, stagnation point, etc.), students use Matlab code provided to create plots of velocity field and pressure contours; streamlines and equipotential lines are sketched and compared to computer output.

 

4. Calculate added mass for a sphere and cylinder, based on geometry, and compare with experimentally measured values.

5. Explain how added mass affects the natural frequency of oscillating bodies submerged in the ocean.

 

Students measure the force on the sphere as a function of time by attaching the sphere to a force sensor and reading the output on an oscilloscope.  By examining the waveform of the signal, students can determine the frequency of the forcing.  Students compare the natural frequency of the sphere oscillating in air and in water and use that information to find the added mass of the sphere; this value is compared to the theoretical value taught in lecture.