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Rotatinal flow (or Taavdar Electric current) is rate of the fluid layers is changed by increasing or decreasing height , and to test this type of flow, first is released a immersed blade in the fluid , and flow is not rotational If blade only moves along with the fluid , and flow is called rotational If moving blade along with straight, also rotate around itself. And the speed of movement of fluid layers is reduced by increasing the height of the fluid level, if the flow was clockwise. And the speed of movement is increased by increasing the height of fluid layers, if the flow was counter clockwise. 〔فیزیک جلد دوم: شارهها، امواج، حرارات نوشته هالیدی و رزنیک فصل دوم:هیدرودینامیک بخش انواع حرکتهای سیال〕 Two criteria is defined for this type of flow: * Circulation: Vorticity: Of course, in two dimensions is equal to 〔مکانیک سیالات نوشته ای.〕 For irrotational flows this value is zero. This value is given in the following formula:〔مکانیک سیالات نوشته ایروینگ شیمز ترجمه علیرضا انتظاری انتشارت نورپردازان صفحه ۱۲۴〕 Of course all three sides is zero for non-rotational flows. == Read more == * viscous flows * fluid flow 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rotatinal flow」の詳細全文を読む スポンサード リンク
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