Pressure drop through anisotropic porous mediumlike cylinder bundles is experimentally examined in turbulent flow regime. Three porosities, , 0.82, and 0.90, are considered. The flow blockage by the cylinder bundles is varied, with the yaw angle used as an anisotropic measure. When the yaw angle is fixed while the porosity is varied, the pressure drop behaves as predicted by the force balance model, consistent with the classic observation: The pressure drop is proportional to the square of the flow velocity with the empirical proportionality as a function of obtained from the force balance model compared to that of from the hydraulic radius theory. On the other hand, for a given porosity, topological anisotropy of the cylinder bundles causes the sinusoidal response of the pressure drop to the variation of yaw angle. At with a period, the lowest pressure drop occurs from the most open configuration of the cylinder bundle whereas the largest flow blockage at causes the highest pressure drop. This variation appears to result from an increase in the drag coefficient of each cylinder element in a harmonic manner.
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October 2008
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Pressure Drop Through Anisotropic Porous Mediumlike Cylinder Bundles in Turbulent Flow Regime
Tongbeum Kim,
Tongbeum Kim
Assistant Professor
Thermofluid Division of MOE Key Laboratory for Strength and Vibration, School of Aerospace,
e-mail: tongbeum@gmail.com
Xi’an Jiaotong University
, 28 West Xianning Road, Xi’an 710049, P.R.C.
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Tian Jian Lu
Tian Jian Lu
Professor
MOE Key Laboratory for Strength and Vibration,
Xi’an Jiaotong University
, 28 West Xianning Road, Xi’an 710049, P.R.C.
Search for other works by this author on:
Tongbeum Kim
Assistant Professor
Thermofluid Division of MOE Key Laboratory for Strength and Vibration, School of Aerospace,
Xi’an Jiaotong University
, 28 West Xianning Road, Xi’an 710049, P.R.C.e-mail: tongbeum@gmail.com
Tian Jian Lu
Professor
MOE Key Laboratory for Strength and Vibration,
Xi’an Jiaotong University
, 28 West Xianning Road, Xi’an 710049, P.R.C.J. Fluids Eng. Oct 2008, 130(10): 104501 (5 pages)
Published Online: September 4, 2008
Article history
Received:
October 17, 2007
Revised:
June 10, 2008
Published:
September 4, 2008
Citation
Kim, T., and Lu, T. J. (September 4, 2008). "Pressure Drop Through Anisotropic Porous Mediumlike Cylinder Bundles in Turbulent Flow Regime." ASME. J. Fluids Eng. October 2008; 130(10): 104501. https://doi.org/10.1115/1.2969454
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