New Fluids Research Study Findings Recently Were Reported by Researchers at Ecole Centrale (A macroscopic model for slightly compressible gas slip-flow in homogeneous porous media)
By a News Reporter-Staff News Editor at Physics Week -- Research findings on Fluids Research are discussed in a new report. According to news reporting from Chatenay Malabry, France, by VerticalNews journalists, research stated, "The study of gas slip-flow in porous media is relevant in many applications ranging from nanotechnology to enhanced oil recovery and in any situation involving low-pressure gas-transport through structures having sufficiently small pores. In this paper, we use the method of volume averaging for deriving effective-medium equations in the framework of a slightly compressible gas flow."
The news correspondents obtained a quote from the research from Ecole Centrale, "The result of the upscaling process is an effective-medium model subjected to time- and length-scale constraints, which are clearly identified in our derivation. At the first order in the Knudsen number, the macroscopic momentum transport equation corresponds to a Darcy-like model involving the classical intrinsic permeability tensor and a slip-flow correction tensor that is also intrinsic. It generalizes the Darcy-Klinkenberg equation for ideal gas flow, and exhibits a more complex form for dense gas. The component values of the two intrinsic tensors were computed by solving the associated closure problems on two-and three-dimensional periodic unit cells. Furthermore, the dependence of the slip-flow correction with the porosity was also verified to agree with approximate analytical results. Our predictions show a power-law relationship between the permeability and the slip-flow correction that is consistent with other works."
According to the news reporters, the research concluded: "Nevertheless, the generalization of such a relationship to any configuration requires more analysis."
For more information on this research see: A macroscopic model for slightly compressible gas slip-flow in homogeneous porous media. Physics of Fluids, 2014;26(5):241-269. Physics of Fluids can be contacted at: Amer Inst Physics, Circulation & Fulfillment Div, 2 Huntington Quadrangle, Ste 1 N O 1, Melville, NY 11747-4501, USA. (American Institute of Physics - www.aip.org/; Physics of Fluids - pof.aip.org/)
Our news journalists report that additional information may be obtained by contacting D. Lasseux, Ecole Cent Paris, EM2C, UPR CNRS 288, F-92295 Chatenay Malabry, France. Additional authors for this research include F.J.V. Parada, J.A.O. Tapia and B. Goyeau.
Keywords for this news article include: France, Europe, Fluids Research, Chatenay Malabry
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC