AIMC Topic: Hydrodynamics

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Super-resolution 4D flow MRI to quantify aortic regurgitation using computational fluid dynamics and deep learning.

The international journal of cardiovascular imaging Feb 23, 2023
Changes in cardiovascular hemodynamics are closely related to the development of aortic regurgitation (AR), a type of valvular heart disease. Metrics derived from blood flows are used to indicate AR onset and evaluate its severity. These metrics can ...
Humans Predictive Value of Tests Aortic Valve Insufficiency Blood Flow Velocity Hydrodynamics Imaging, Three-Dimensional Hemodynamics Magnetic Resonance Imaging Deep Learning
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Soft robotic patient-specific hydrodynamic model of aortic stenosis and ventricular remodeling.

Science robotics Feb 22, 2023
Aortic stenosis (AS) affects about 1.5 million people in the United States and is associated with a 5-year survival rate of 20% if untreated. In these patients, aortic valve replacement is performed to restore adequate hemodynamics and alleviate symp...
Treatment Outcome Aortic Valve Stenosis Humans United States Hydrodynamics Transcatheter Aortic Valve Replacement Robotics Ventricular Remodeling
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Control Strategy of an Underactuated Underwater Drone-Shape Robot for Grasping Tasks.

Sensors (Basel, Switzerland) Nov 15, 2022
In underwater environments, ensuring people's safety is complicated, with potentially life-threatening outcomes, especially when divers have to work in deeper conditions. To improve the available solutions for working with robots in this kind of envi...
Feedback Robotics Humans Unmanned Aerial Devices Acceleration Hydrodynamics
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Role of the caudal peduncle in a fish-inspired robotic model: how changing stiffness and angle of attack affects swimming performance.

Bioinspiration & biomimetics Oct 31, 2022
In fish, the tail is a key element of propulsive anatomy that contributes to thrust during swimming. Fish possess the ability to alter tail stiffness, surface area and conformation. Specifically, the region at the base of the tail, the caudal peduncl...
Hydrodynamics Robotics Robotic Surgical Procedures Fishes Swimming Biomechanical Phenomena Animals
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Reduced rotational flows enable the translation of surface-rolling microrobots in confined spaces.

Nature communications Oct 21, 2022
Biological microorganisms overcome the Brownian motion at low Reynolds numbers by utilizing symmetry-breaking mechanisms. Inspired by them, various microrobot locomotion methods have been developed at the microscale by breaking the hydrodynamic symme...
Confined Spaces Robotics Motion Locomotion Hydrodynamics
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Gaussian process emulation of spatio-temporal outputs of a 2D inland flood model.

Water research Sep 14, 2022
The computational limitations of complex numerical models have led to adoption of statistical emulators across a variety of problems in science and engineering disciplines to circumvent the high computational costs associated with numerical simulatio...
Computer Simulation Water Hydrodynamics Neural Networks, Computer Floods
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Interactive and synergistic behaviours of multiple heterogeneous microrobots.

Lab on a chip Sep 13, 2022
Microrobots have been extensively studied for biomedical applications, and significant innovations and advances have been made in diverse aspects of the field. However, most studies have been based on individual microrobots with limited capabilities,...
Magnetic Fields Robotics Hydrodynamics Rotation
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Accelerating hydrodynamic simulations of urban drainage systems with physics-guided machine learning.

Water research Aug 11, 2022
We propose and demonstrate a new approach for fast and accurate surrogate modelling of urban drainage system hydraulics based on physics-guided machine learning. The surrogates are trained against a limited set of simulation results from a hydrodynam...
Hydrology Hydrodynamics Physics Machine Learning Water
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SurferBot: a wave-propelled aquatic vibrobot.

Bioinspiration & biomimetics Jul 25, 2022
Nature has evolved a vast array of strategies for propulsion at the air-fluid interface. Inspired by a survival mechanism initiated by the honeybee () trapped on the surface of water, we here present the: a centimeter-scale vibrating robotic device t...
Bees Biomechanical Phenomena Locomotion Swimming Hydrodynamics Animals Robotics
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Resurrecting extinct cephalopods with biomimetic robots to explore hydrodynamic stability, maneuverability, and physical constraints on life habits.

Scientific reports Jul 4, 2022
Externally shelled cephalopods with coiled, planispiral conchs were ecologically successful for hundreds of millions of years. These animals displayed remarkable morphological disparity, reflecting comparable differences in physical properties that w...
Hydrodynamics Robotics Cephalopoda Animals Habits Biomimetics
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