Eliminating Segregation in Free-Surface Flows of Particles

by: Deliang Shi, Adetola A Abatan, Watson L Vargas, JJ Mccarthy

Physical Review Letters, Vol. 99, No. 14. (2007)

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Abstract

By introducing periodic flow inversions, we show both experimentally and computationally that forcing with a value above a critical frequency can effectively eliminate both density and size segregation. The critical frequency is related to the inverse of the characteristic time of segregation and is shown to scale with the shear rate of the particle flow. This observation could lead to new designs for a vast array of particle processing applications and suggests a new way for researchers to think about segregation problems.

@article{citeulike:2552562, abstract = {By introducing periodic flow inversions, we show both experimentally and computationally that forcing with a value above a critical frequency can effectively eliminate both density and size segregation. The critical frequency is related to the inverse of the characteristic time of segregation and is shown to scale with the shear rate of the particle flow. This observation could lead to new designs for a vast array of particle processing applications and suggests a new way for researchers to think about segregation problems.}, author = {Shi, Deliang and Abatan, Adetola A. and Vargas, Watson L. and Mccarthy, J. J. }, citeulike-article-id = {2552562}, doi = {10.1103/PhysRevLett.99.148001}, journal = {Physical Review Letters}, keywords = {2007, flow, grain}, number = {14}, posted-at = {2008-03-18 19:32:19}, priority = {2}, publisher = {APS}, title = {Eliminating Segregation in Free-Surface Flows of Particles}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000099000014148001000001\&idtype=cvips\&gifs=yes}, volume = {99}, year = {2007} }

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TY - JOUR ID - citeulike:2552562 L3 - citeulike-article-id:2552562 TI - Eliminating Segregation in Free-Surface Flows of Particles JF - Physical Review Letters VL - 99 IS - 14 PB - APS N2 - By introducing periodic flow inversions, we show both experimentally and computationally that forcing with a value above a critical frequency can effectively eliminate both density and size segregation. The critical frequency is related to the inverse of the characteristic time of segregation and is shown to scale with the shear rate of the particle flow. This observation could lead to new designs for a vast array of particle processing applications and suggests a new way for researchers to think about segregation problems. KW - 2007 KW - flow KW - grain AU - Shi, Deliang AU - Abatan, Adetola AU - Vargas, Watson AU - Mccarthy, JJ PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000099000014148001000001&idtype=cvips&gifs=yes ER -

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