After rising a short distance the smooth column of smoke
from a cigarette breaks up into an irregular and random pattern. In a similar fashion, a stream of fluid flowing past an obstacle breaks up into eddies and vortices which give the flow irregular velocity components transverse to the flow direction. Other examples include the wakes left in water by moving ships the sound produced by whistling and by wind instruments. These examples are the results of
Alaminar flow of airCorrect AnswerIncorrect Answer
Bstreamline flow of airCorrect AnswerIncorrect Answer
Cturbulent flow of airCorrect AnswerIncorrect Answer
Dviscous flow at low speedCorrect AnswerIncorrect Answer
Solution
Turbulent flow is accompanied by random, irregular, local circular currents called vortices.
