Turbulence, In fluid mechanics, a flow condition (see turbulent flow) in which local speed and pressure change unpredictably as an average flow is maintained. Common examples are wind and water swirling around obstructions, or fast flow (Reynolds number greater than 2,100) of any sort. Eddies, In fluid dynamics, turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to laminar flow, which occurs when a fluid flows in parallel layers with no disruption between those layers. [1] Turbulence is violent and uneven movement within a particular area of air, liquid, or gas. His plane encountered severe turbulence and winds of nearly two-hundred miles an hour. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers Turbulence is a situation of sudden change, trouble, argument or violence, or a series of sudden and violent changes in the direction of air or water. Learn more about the word origin, synonyms, collocations and usage notes with Oxford Advanced Learner's Dictionary.
