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Virtual density and speed of sound in a fluid-solid mixture wlth periodic structure

Schumann, U. (1981) Virtual density and speed of sound in a fluid-solid mixture wlth periodic structure. International Journal of Multiphase Flow, 7, pp. 619-633. doi: 10.1016/0301-9322(81)90034-3.


Official URL: http://www.elsevier.com/wps/find/journaldescription.cws_home/234/description#description


In a two-phase mixture of solid particles in an inviscid compressible fluid the effective density of the mixture differs from the average density due to relative accelerations between the phases. The effective density directly influences the effective speed of sound. A constructive theory is given to compute density tensors which describe the inertial coupling between the two phases. The theory is based on Hamilton's principle and a general homogcnization method as described in a previous paper. Here we describe a variant of the theory which clarifies the differences between surface and volume averaged velocities. This difference is important in case of two-phase configurations showing a regular periodic pattern like rod bundles in fiuid. Quantitative results are given for rod bundles and partly for spheres in regular square arrangements.

Item URL in elib:https://elib.dlr.de/53580/
Document Type:Article
Title:Virtual density and speed of sound in a fluid-solid mixture wlth periodic structure
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schumann, U.Kernforschungszentrum KarlsruheUNSPECIFIED
Journal or Publication Title:International Journal of Multiphase Flow
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1016/0301-9322(81)90034-3
Page Range:pp. 619-633
Keywords:solid, particles
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics
Deposited By: Freund, Jana
Deposited On:26 Nov 2008
Last Modified:31 Jul 2019 19:21

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