turb-, turbin-, turbo-, turbu-
(Latin: uproar, commotion, disorderly, agitated, confusion; whirl, whirlwind)
A jet engine with a gas turbine uses exhaust gases to provide the propulsive thrust for an aircraft.
2. An aircraft employing an engine propelled by a gas turbine: The earliest form turbojets were developed in the late 1930s.
2. An airplane equipped with two or more turbo-propeller engines: The engines of a turboprop involve four rotating propellers that rotate in opposite directions and which are positioned on the wings of an aircraft.
A turboprop is an aircraft whose propellers are driven by a gas turbine.
2. A state of disorder, disarray, or agitation in nature: A turbulence can be an irregular motion of the atmosphere, as manifested by wind gusts and lulls, or a secondary motion of water caused by eddies in a moving flow.
3. The chaotic or unstable eddying motion in a fluid: Turbulence can be exemplified by internal motion of agitation in a liquid or cascades of water.
Avoiding excessive turbulence generated around moving objects, such as aircraft which can make their motion inefficient and difficult to control, is a major factor in aerodynamic designing.
2. A condition of disorder, disarray, or agitation: There was so much turbulency with arguments, screaming, and yelling, that Christine decided to leave home and live in peace by herself.
2. Characterized by, or showing disturbance, disorder, etc.: Many people go through turbulent years before they can find their peaceful years.
3. Referring to acts of violence and aggression: The turbulent young soldiers could not control themselves after their comrade was killed.
4. Descriptive of violent motion and agitation: While on their hiking trip, Mark and Janet sat down next to some turbulent rapids and enjoyed their lunch.
5. Chaotic and restless; marked by disturbances, changes, and unrest: It has been a turbulent year in politics.
6. In meteorology, atmospherically unstable: Turbulent weather conditions can occur when variations in wind speed and direction take place.
2. Relating to how something occurs in a stormy or violent manner: The turbulently rolling ocean waves were advancing towards the houses close to the shore.
3. A description of how a person is violently agitated or disturbed; Thomas and his wife ended their marriage turbulently, involving two lawyers who earned a large amount of money!
4. Characteristic of how an individual has a chaotic or restless character: Jack was known to act turbulently when under stress and pressure.
5. A reference to how something shows unrest or disturbance: Early in the history of the country there were turbulently reoccurring revolutions.
About one-fifth of the Denmark's electricity comes from wind, which wind experts say is the highest proportion of any country.
A closer look shows that Denmark is a far cry from a clean-energy paradise.
The building of wind turbines has virtually ground to a halt since subsidies were cut back.
Meanwhile, compared with others in the European Union, Danes remain above-average emitters of the greenhouse gas carbon dioxide.
For all of its wind turbines, a large proportion of the rest of Denmark's power is generated by plants that burn imported coal.
Danish experience shows how difficult it can be for countries grown rich on fossil fuels to switch to renewable energy sources like wind power.
Among the hurdles are fluctuating political priorities, the high cost of putting new turbines offshore, concern about public acceptance of large wind turbines, and the destructive volatility of the wind itself.
Some parts of western Denmark derive 100 percent of their peak needs from wind if the breeze is up.
Germany and Spain generate more power in absolute terms, but in those countries wind still accounts for a far smaller proportion of the electricity generated. The average for all 27 European Union countries is three percent.
The Germans and the Spanish are catching up as Denmark slows down.
