Hydrodynamics is the branch of continuum mechanics that studies the motion of incompressible or weakly compressible fluids and the forces associated with that motion. It is governed fundamentally by the Navier–Stokes equations, which express conservation of mass and momentum, often complemented by constitutive relations for viscosity and turbulence models. Hydrodynamics analyzes laminar and turbulent flow regimes, boundary layers, instabilities, and transport phenomena such as momentum and energy dissipation. It underpins quantitative descriptions of flow in pipes, channels, around immersed bodies, and in geophysical and astrophysical contexts, providing predictive frameworks for engineering design, environmental modeling, and many areas of physical sciences.
New research, led by Postdoctoral Fellow Dr. Lea Dasallas at Te Whare Wānanga o Waitaha | University of Canterbury (UC), shows that even shallow floodwater can be powerful enough to knock people off their feet or sweep vehicles ...
Environment
Feb 2, 2026
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Floods account for up to 40% of weather-related disasters worldwide, and their frequency has more than doubled since 2000, according to a recent report from the United Nations Office for Disaster Risk Reduction. Global flood ...
Environment
Oct 27, 2025
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Caltech researchers have developed a new simulation of the hydrological cycle on Jupiter, modeling how water vapor condenses into clouds and falls as rain throughout the giant planet's swirled, turbulent atmosphere. The research ...
Planetary Sciences
Sep 29, 2025
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It wasn't just data from maps, machines and rainfall readings that led CSIRO scientists to build Australia's most comprehensive and accurate flood model for the Richmond River catchment.
Environment
Jul 17, 2025
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Rivers are Earth's arteries. Water, sediment and nutrients self-organize into diverse, dynamic channels as they journey from the mountains to the sea. Some rivers carve out a single pathway, while others divide into multiple ...
Earth Sciences
Jul 11, 2025
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Over just two hours, the Guadalupe River at Comfort, Texas, rose from hip-height to three stories tall, sending water weighing as much as the Empire State building downstream roughly every minute it remained at its crest.
Environment
Jul 11, 2025
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Whether diving off docks, cannonballing into lakes or leaping off the high board, there's nothing quite like the joy of jumping into water.
General Physics
May 16, 2025
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Scientists at the University of Miami's Alfred C. Glassell Jr. SUrge‐STructure‐Atmosphere INteraction (SUSTAIN) laboratory conducted a first-of-its-kind study into how waves form and increase in windy and hurricane conditions. ...
Earth Sciences
Apr 14, 2025
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New UC research has highlighted the underestimated relevance of water velocity in flood evacuation planning, a danger highlighted by the flooding in Valencia in 2024.
Environment
Apr 1, 2025
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Computer scientists at the University of California San Diego have developed a method for generating highly realistic computer-generated images of fluid dynamics in elements such as smoke.
Soft Matter
Jan 6, 2025
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