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Explain critical speed , White Water Rapids and turbulent flow . |
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Answer» Solution :CRITICAL speed : Steady flow is achieved at low flow speeds beyond a limiting VALUE , called critical speed . Turbulent flow : In alimiting value , called critical speed . " Turbulent flow: In a fluid flow ,if the velocity of the fluid changes erratically from point to point as well as from time to time ,the flow is known as a turbulent flow. If speed of fluid , becomes more to the critical speed ,this flow loses steadiness and becomes turbulent . White water rapids : When a fast flowing stream encounters ROCKS , small foamy whirlpool like regions called white water rapids are formed  (a) Some streamlines for fluid flow. A jet of air striking a FLAT PLATE placed perpendicular to it .This is an example of turbulent flow. |
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