Naval Architecture and Marine Engineering
New Courses Introduced at the University of Michigan:
NA 481 Probabilistic Methods in Marine Systems
NA 425 Physics of the Oceans
NA 455 Coastal Dynamics and Sedimentation
NA 340 Marine Dynamics I (significant revision)
NA 321 Marine Hydrodynamics II (significant revision)
Courses Taught at the University of Michigan:
NA 320 Marine Hydrodynamics I (Basic Fluid Mechanics and Waves)
NA 321 Marine Hydrodynamics II (Propulsion and flows around bodies)
CEE 325 Fluid Mechanics (Civil and Environmental Engineering)
NA 340 Marine Dynamics I (Vibrations and Spectral Analysis)
NA 381 Probabilistic Methods in Marine Systems
NA 391 Marine Engineering Laboratory
NA 420 Environmental Ocean Dynamics (Cross Listed AOSS 420, ENSCI 420)
NA 425 Physics of the Ocean
NA 455 Coastal Dynamics and Sedimentation
NA 481 Probabilistic Methods in Marine Systems (Probability, Statistics, Stochastic Processes, Spectral Analysis)
NA 491 Marine Engineering Laboratory
NA 520 Intermediate Marine Hydrodynamics (Graduate Fluid Mechanics)
NA 521 Directed Study and Research in Marine Hydrodynamics (Fluid Mechanics)
NA 522 Experimental Marine Engineering (Laboratory course)
NA 590 Reading and Seminar (Coastal Engineering; Marine Hydrodynamics)
AM 627 Wave Motion in Fluids (Cross Listed ME 627, NA 627)
Active areas of research are in nonlinear water-wave dynamics, contact-line dynamics, drag-reduction technologies, and coastal engineering. Energy dissipation, vorticity dynamics in near-breaking and breaking waves are studied experimentally using PIV and other non-intrusive techniques. Drag-reduction technologies such as polymers are investigated. Wind effects on these mechanically generated waves are also studied. Contact-line dynamics in oscillatory flows are studied experimentally and numerically. Steep and breaking standing waves and their nonlinear dynamics have been investigated using Faraday waves. Long-wave, short-wave interactions are investigated as well as the viscous drift induced by short waves. Specifically parasitic capillary waves generated by steep gravity waves are studied. High-speed video in conjunction with a laser sheet provide spatial information. In the experimental investigations, temporal and spatial data are used to yield both frequency and directional (wavenumber) spectra. Within coastal engineering, present interests are in the numerical modeling of shorelines and structures, and the quantification of longshore and cross-shore sediment transport. Specifically, these areas include such topics as the relationship between directional wave spectra and its attendant sediment transport; and, a description of the beach profile for non-monotonic cross-shores.
New Research Programs Planned
1-Hydroplastic blast panel research is in its initial stages. Provisional Patent received. Proposal preparation has begun for ONR (as DARPA recommended). Research with D.G. Karr, NAME.
2-Fluid dynamics of sloshing in LNG carriers. Discussions are underway with ExxonMobil regarding an investigation of this phenomenon. Research with W.W. Schultz, ME. Also, sloshing in enclosed ship containers to replace conventional locks. Talks with Dalian University, Dalian, China.
3-Nature-assisted erosion-accretion dredging program is an initiative by Perlin, Meadows, Choi, and Nwogu to obtain funding to investigate using gas or liquid injection to resuspend sediment to reduce dredging requirements in harbors, bays, estuaries, and ports, and to reduce the need for beach fills and hard structures on open coastlines. This effort has been proposed to the US Army Corps of Engineers who said it held promise; however, they had no funds to support it. I have sent it to NSF Fluid Dynamics and Hydraulics, Chemical & Transport Systems Div., and I received positive response for submission to them and to the Physical Oceanography Div.
1-” Influence of bubble size on micro-bubble drag reduction,” X. Shen, M. Perlin, S.L. Ceccio, Experiments in Fluids , revised (acceptance anyday).
2 -W.C. Sanders, E.S. Winkel, D.R. Dowling, M. Perlin, and S.L. Ceccio, “Bubble Friction Drag Reduction in a High Reynolds Number Flat Plate Turbulent Boundary Layer,” Journal of Fluid Mechanics , Vol. 552, 2006.
3-R.J. Etter, J.M. Cutbirth, S.L. Ceccio, D.R. Dowling, and Marc Perlin, “High Reynolds Number Experimentation in the U.S. Navy’s William B. Morgan Large Cavitation Channel”, Measurement Science and Technology , Vol 16, 1701-1709, 2005.
4-Jinhyun Cho, M. Perlin, and S.L. Ceccio, “Measurement of near-wall stratified bubbly flows using electrical impedance,” Measurement Sci & Tech , Vol. 16, 1021-1029, 2005.
5-Eric Winkel, S.L. Ceccio, D.R. Dowling, M. Perlin, “Bubble size distributions produced by wall injection of air into flowing fresh water, salt water, and surfactant solutions,” Experiments in Fluids , Vol. 37 , 802-810, 2004.
6-M. Perlin, W.W. Schultz, Z. Liu “High Reynolds number oscillating contact lines,” Wave Motion , Vol. 40, 41-56, 2004.
7-L. Jiang, M. Perlin, and W.W. Schultz, “Contact Line Dynamics and Damping for Oscillating Free Surface Flows,” Physics of Fluids , Vol. 16 , 748-758, 2004.
8-C. Judge, A. Troesch, and M. Perlin, “Initial Water Impact of a Wedge at Vertical and Oblique Angles,” Journal of Engr Math , Special Water Impact Issue, Vol. 48, 279-303, 2004.
9-X. Bian, M. Perlin, W.W. Schultz, and M. Agarwal, “Axisymmetric Slosh Frequencies of a Liquid Mass in a Circular Cylinder,” Physics of Fluids , Vol. 15, 3659-3664, 2003.
10-O. Gottlieb and M. Perlin, “The Influence of Wave Induced Lift on the Period-Doubling Bifurcation of an Elastically Tethered Sphere: Theory and Experiment,” Physics of Fluids, accepted, pending revisions, 2004.
11-H.J. Lin and M. Perlin, “The Velocity and Vorticity Fields Beneath Gravity-Capillary Waves Exhibiting Parasitic Ripples,” Wave Motion , Vol. 33, 245-257, 2001.
12-E. Dano, D. Lyzenga, and M. Perlin, “A High Resolution Study Of The Microwave Radar Backscatter from Transient Breaking Waves,” IEEE Journal of Oceanic Engineering , Vol. 26, 2001.
13-M. Perlin and W.W. Schultz, “Capillary Effects on Surface Waves,” Review of Fluid Mechanics , Vol. 32, 241-274, 2000 (Also shown in E.8.2 and E.12.14).
14-L. Jiang, H.J. Lin, W.W. Schultz, and M. Perlin, “Unsteady Ripple Generation on Steep Gravity-Capillary Waves, ” Journal of Fluid Mechanics , Vol. 386, 281-304, 1999.
15-J.J. Lin and M. Perlin, “Improved Methods for Thin Surface Boundary Layer Investigations,” Experiments in Fluids , Vol. 25, 431-444, 1998.