Internal Separation
Boundary layer separation can occur for internal flows. It can result from such causes such as a rapidly expanding duct of pipe. Separation occurs due to an adverse pressure gradient encountered as the flow expands, causing an extended region of separated flow. The part of the flow that separates the recirculating flow and the flow through the central region of the duct is called the dividing streamline. The point where the dividing streamline attaches to the wall again is called the reattachment point. As the flow goes farther downstream it eventually achieves an equilibrium state and has no reverse flow.
Read more about this topic: Flow Separation
Famous quotes containing the words internal and/or separation:
“We have our difficulties, true; but we are a wiser and a tougher nation than we were in 1932. Never have there been six years of such far flung internal preparedness in all of history. And this has been done without any dictator’s power to command, without conscription of labor or confiscation of capital, without concentration camps and without a scratch on freedom of speech, freedom of the press or the rest of the Bill of Rights.”
—Franklin D. Roosevelt (1882–1945)
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—Cathy Rindner Tempelsman (20th century)