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Unformatted text preview: V e . The device automatically draws in atmospheric air via the streamlined, cymbal-shaped entrance, whose radius is large and separation h is small compared with the radius R of the mixing tube. We shall assume that the system is so designed that the water spray fills the entire cross-section at (2) uniformly, but does not at any point hit the side walls of the tube. Simplify your analysis by also assuming that V e << V j , and ˙ m w V j ˙ m air V e , where ˙ m air is the mass flow rate of air drawn in. Derive an expression for the mass flow rate ˙ m air of air drawn through the device, expressed in terms of V j , ˙ m w , R , h , and the densities if air and water. HINT HINT 2 HINT 3 HINT 4 ANSWER...
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This note was uploaded on 02/27/2012 for the course MECHANICAL 2.25 taught by Professor Garethmckinley during the Fall '05 term at MIT.
- Fall '05