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http://dx.doi.org/10.3795/KSME-B.2013.37.7.629

Theoretical and Computational Analyses of Bernoulli Levitation Flows  

Nam, Jong Soon (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
Kim, Gyu Wan (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
Kim, Jin Hyeon (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
Kim, Heuy Dong (Dept. of Mechanical Engineering, Andong Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.37, no.7, 2013 , pp. 629-636 More about this Journal
Abstract
Pneumatic levitation is based upon Bernoulli's principle. However, this method is known to require a large gas flow rate that can lead to an increase in the cost of products. In this case, the gas flow rate should be increased, and the compressible effects of the gas may be of practical importance. In the present study, a computational fluid dynamics method has been used to obtain insights into Bernoulli levitation flows. Three-dimensional compressible Navier-Stokes equations in combination with the SST k-${\omega}$ turbulence model were solved using a fully implicit finite volume scheme. The gas flow rate, workpiece diameter,and clearance gap between the workpiece and the circular cylinder were varied to investigate the flow characteristics inside. It is known that there is an optimal clearance gap for the lifting force and that increasing the supply gas flow rate results in a larger lifting force.
Keywords
Bernoulli Principle; Gas Levitation; Compressible Flow; Non-Contact Transportation; Flow Choking;
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Times Cited By KSCI : 2  (Citation Analysis)
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