39 citations · 231 across the 22 of their papers we have counts for
22 papers
Deep water wave cloaking using a multi-layered buoyant plate
Takahito Iida, Ahmad Zareei, Mohammad-Reza Alam
Trajectory of surface gravity waves in potential flow regime is affected by the gravitational acceleration, water density, and seabed depth. While the gravitational acceleration an…
Rapid Phase-Resolved Prediction of Nonlinear Dispersive Waves Using Machine Learning
Fazlolah Mohaghegh, Mohammad-Reza Alam, Jayathi Murthy
In this paper, we show that a revised convolutional recurrent neural network (CRNN) can decrease, by orders of magnitude, the time needed for the phase-resolved prediction of waves…
Landslide Tsunamis in Lakes
Louis-Alexandre Couston, Chiang C Mei, Mohammad-Reza Alam
Landslides plunging into lakes and reservoirs can result in extreme wave runup at shores. This phenomenon has claimed lives and caused damage to near-shore properties. Landslide ts…
Fabry-Perot resonance of water waves
Louis-Alexandre Couston, Qiuchen Guo, Maysamreza Chamanzar +1
We show that significant water wave amplification is obtained in a water resonator consisting of two spatially separated patches of small-amplitude sinusoidal corrugations on an ot…
Active Cloaking in Stokes Flows via Reinforcement Learning
Mehdi Mirzakhanloo, Soheil Esmaeilzadeh, Mohammad-Reza Alam
Hydrodynamic signatures at the Stokes regime, pertinent to motility of micro-swimmers, have a long-range nature. This implies that movements of an object in such a viscosity-domina…
Frequency-dependent higher-order Stokes singularities near a planar elastic boundary: implications for the hydrodynamics of an active microswimmer near an elastic interface
Abdallah Daddi-Moussa-Ider, Christina Kurzthaler, Christian Hoell +6
The emerging field of self-driven active particles in fluid environments has recently created significant interest in the biophysics and bioengineering communities owing to their p…
The Experimental Realization of an Artificial Low-Reynolds-Number Swimmer with Three-Dimensional Maneuverability
Mohsen Saadat, Mehdi Mirzakhanloo, Julie Shen +2
The motion of biological micro-robots -- similar to that of swimming microorganisms such as bacteria or spermatozoa -- is governed by different physical rules than what we experien…
Propulsion and Mixing Generated by the Digitized Gait of Caenorhabditis elegans
Ahmad Zareei, Mir Abbas Jalali, Mohsen Saadat +2
Nematodes have evolved to swim in highly viscous environments. Artificial mechanisms that mimic the locomotory functions of nematodes can be efficient viscous pumps. We experimenta…
Broadband Wall-less Waveguide for Shallow Water Waves
Ahmad Zareei, Mohammad-Reza Alam
We present a broadband waveguide for water waves obtained through mere manipulation of seabed properties and without any need for sidewalls. Specifically, we show that a viscoelast…
Stealthy Movements and Concealed Swarms of Swimming micro-Robots
Mehdi Mirzakhanloo, Mohammad-Reza Alam
Here we show that micro-swimmers can form a concealed swarm through synergistic cooperation in suppressing one another's disturbing flows. We then demonstrate how such a concealed…
Flow Characteristics of Chlamydomonas result in Purely Hydrodynamic Scattering
Mehdi Mirzakhanloo, Mohammad-Reza Alam
It has long been believed that swimming eukaryotes feel solid boundaries through direct ciliary contact. Specifically, based on observations of behavior of green alga Chlamydomonas…
Shape Optimization of Wave Energy Converters for Broadband Directional Incident Waves
Soheil Esmaeilzadeh, Mohammad-Reza Alam
Here, through a systematic methodology and the use of high performance computing, we calculate the optimum shape for a wave energy converter under the action of incident waves of (…
Rogue Wave Morphology in Broadband Nonbreaking Seas
Qiuchen Guo, Louis-Alexandre Couston, Mohammad-Reza Alam
Here, we show through a statistical analysis that rogue waves in broadband non-breaking seas are spatially asymmetric. In addition to the top-down asymmetry due to nonlinear effect…
Dominant Resonance in Parametric Subharmonic Instability of Internal Waves
Yong Liang, Louis-Alexandre Couston, Qiuchen Guo +1
Parametric Subharmonic Instability (PSI) is one of the most important mechanisms that transfer energy from tidally-generated long internal waves to short steep waves. Breaking of t…
Broadband cloaking for flexural waves
Ahmad Zareei, Mohammad-Reza Alam
The governing equation for elastic waves in flexural plates is not form invariant, and hence designing a cloak for such waves faces a major challenge. Here, we present the design o…
Sensitivity of Internal Wave Energy Distribution over Seabed Corrugations to Adjacent Seabed Features
F. Karimpour, A. Zareei, M. -R. Alam
Here we show that the distribution of internal gravity waves energy over a patch of seabed corrugations strongly depends on the "distance" of the patch to adjacent seafloor feature…
Oblique internal-wave chain resonance over seabed corrugations
Louis-Alexandre Couston, Yong Liang, Mohammad-Reza Alam
We show that monochromatic long-crested corrugations on an otherwise flat seafloor can coherently scatter the energy of an oblique incident internal wave to multiple multi-directio…
Inherently Unstable Internal Gravity Waves due to Resonant Harmonic Generation
Y. Liang, Ahmad Zareei, M. -R. Alam
Here we show that there exist internal gravity waves that are inherently unstable, that is, they cannot exist in nature for a long time. The instability mechanism is a one-way (irr…
Terminal retrograde turn of rolling rings
Mir Abbas Jalali, Milad S. Sarebangholi, Reza Alam
We report an unexpected reverse spiral turn in the final stage of the motion of rolling rings. It is well known that spinning disks rotate in the same direction of their initial sp…
Versatile low-Reynolds-number swimmer with three-dimensional maneuverability
Mir Abbas Jalali, Mohammad-Reza Alam, SeyyedHossein Mousavi
We design and simulate the motion of a new swimmer, the {\it Quadroar}, with three dimensional translation and reorientation capabilities in low Reynolds number conditions. The Qua…
Predictability Horizon of Oceanic Rogue Waves
Reza Alam
Prediction is a central goal and a yet-unresolved challenge in the investigation of oceanic rogue waves. Here we define a horizon of predictability for oceanic rogue waves and deri…
Asymmetric Flexural-gravity Lumps in Nonuniform Media
Yong Liang, Mohammad-Reza Alam
Here we show that asymmetric fully-localized flexural-gravity lumps can propagate on the surface of an inviscid and irrotational fluid covered by a variable-thickness elastic mater…