Wind Energy

Thu, 17 Dec 2020 19:52:31 UTC

Taking the chill off icy build-up on planes and wind turbines

New research is changing the way aircraft and wind turbine operators are addressing the risks related to ice build-up. A team has broadened the scope and functionality of their ice sensors. … read more
Mon, 07 Dec 2020 17:41:16 UTC

Wind tunnel tests will help design future Army tiltrotor aircraft

After more than three years in development, a team of U.S. Army researchers and industry partners completed the construction of a testbed that will help to inform the design of future Army rotorcraft. The team plans to test the TiltRotor Aeroelastic Stability Testbed, or TRAST in a massive wind tunnel at the NASA Langley Research Center to gauge the effectiveness of modern tiltrotor stability models. … read more
Thu, 03 Dec 2020 18:38:57 UTC

Proverbial wolf can't blow down modern timber high-rises

With an increasing demand for a more sustainable alternative for high-rise construction, new research points to timber as a sustainable and effective way to make tall, high-density, and renewable buildings. … read more
Mon, 23 Nov 2020 22:34:56 UTC

Supersized wind turbines generate clean energy--and surprising physics

As wind energy scales up, researchers study the fluid dynamics challenges. … read more
Mon, 23 Nov 2020 22:34:52 UTC

The science of windy cities

Researchers model urban airflows to help improve the design of drones, skyscrapers, and natural ventilation systems. … read more
Wed, 18 Nov 2020 19:19:05 UTC

Small finlets on owl feathers point the way to less aircraft noise

Researchers reveals how the microstructure of small finlets on owl feathers enable silent flight. … read more
Wed, 18 Nov 2020 00:26:28 UTC

Moving wind turbine blades toward recyclability

A new material for wind blades that can be recycled could transform the wind industry, rendering renewable energy more sustainable than ever before while lowering costs in the process. Researchers demonstrated the feasibility of thermoplastic resin by manufacturing a 9-meter-long wind turbine blade using this novel resin. … read more
Tue, 10 Nov 2020 16:25:36 UTC

Smart devices to schedule electricity use may prevent power outages

Power plants generate electricity and send it into power lines that distribute energy to nodes where it can be used. But if the electricity load is more than the system's capacity, transmission can fail, leading to a cascade of failures throughout the electric grid. Researchers show demand side control may be an effective solution to stabilizing the reliability of power grids that use a mix of energy generation sources. … read more
Tue, 03 Nov 2020 16:25:40 UTC

Tracking flight trajectory of evaporating cough droplets

Researchers conducted a numerical study on droplet dispersion using high fidelity air flow simulation. The scientists found a single 100-micrometer cough droplet under wind speed of 2 meters per second can travel up to 6.6 meters and even further under dry air conditions due to droplet evaporation. … read more
Wed, 28 Oct 2020 14:18:51 UTC

Renewable energy targets can undermine sustainable intentions

Renewable energy targets (RETs) may be too blunt a tool for ensuring a sustainable future, according to new research. … read more
Tue, 13 Oct 2020 19:08:12 UTC

Mathematical tools predict if wave-energy devices stay afloat in the ocean

Ocean waves represent an abundant source of renewable energy. But to best use this natural resource, wave-energy converters need to be capable of physically handling ocean waves of different strengths without capsizing. … read more
Tue, 29 Sep 2020 21:34:19 UTC

Generating renewable hydrogen fuel from the sea

The power of the sun, wind and sea may soon combine to produce clean-burning hydrogen fuel, according to researchers. The team integrated water purification technology into a new proof-of-concept design for a sea water electrolyzer, which uses an electric current to split apart the hydrogen and oxygen in water molecules. … read more
Wed, 23 Sep 2020 16:47:20 UTC

This tiny device can scavenge wind energy from the breeze you make when you walk

Most of the wind available on land is too gentle to push commercial wind turbine blades, but now researchers have designed a kind of 'tiny wind turbine' that can scavenge wind energy from breezes as little as those created by a brisk walk. The method is a low-cost and efficient way of collecting light breezes as a micro-energy source. … read more
Tue, 22 Sep 2020 15:23:04 UTC

Evaporation critical to coronavirus transmission as weather changes

As COVID-19 cases continue to rise, it is increasingly urgent to understand how climate impacts the spread of the coronavirus, particularly as winter virus infections are more common and the northern hemisphere will soon see cooler temperatures. Researchers studied the effects of relative humidity, environmental temperature, and wind speed on the respiratory cloud and virus viability. They found a critical factor for the transmission of the infectious particles is evaporation. … read more
Tue, 08 Sep 2020 21:05:37 UTC

California offshore winds show promise as power source

One of the challenges of moving toward fully renewable energy in California by 2045 is matching production to demand. Consumer demand peaks in the evening when solar energy is no longer available. Offshore wind energy has the potential to help meet this demand. … read more
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