TY - GEN

T1 - Effects of electrokinetic slip flow on lubrication theory

AU - Li, Wang-Long

PY - 2008/5/19

Y1 - 2008/5/19

N2 - A lubrication theory that includes the effects of electric double layer (EDL) and boundary slip is developed. Both effects are important in microflow, and thus in lubrication problems. They have opposite effects on velocity distributions between lubricating surfaces. Also, the velocity distribution induced by the EDL stream potential (electroviscous effect) is affected by the boundary slip. Under the usual assumptions of lubrication and Debye-Hückel approximation for low surface potential, the Navier-Stokes equation with body force due to the electrical potential as well as the widely accepted Navier slip boundary conditions is utilized on deriving the modified Reynolds equation. Effects of EDL and boundary slip on the 1-D bearing performance are discussed by solving the modified Reynolds equation numerically.

AB - A lubrication theory that includes the effects of electric double layer (EDL) and boundary slip is developed. Both effects are important in microflow, and thus in lubrication problems. They have opposite effects on velocity distributions between lubricating surfaces. Also, the velocity distribution induced by the EDL stream potential (electroviscous effect) is affected by the boundary slip. Under the usual assumptions of lubrication and Debye-Hückel approximation for low surface potential, the Navier-Stokes equation with body force due to the electrical potential as well as the widely accepted Navier slip boundary conditions is utilized on deriving the modified Reynolds equation. Effects of EDL and boundary slip on the 1-D bearing performance are discussed by solving the modified Reynolds equation numerically.

UR - http://www.scopus.com/inward/record.url?scp=43449094707&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43449094707&partnerID=8YFLogxK

U2 - 10.1115/IJTC2007-44167

DO - 10.1115/IJTC2007-44167

M3 - Conference contribution

AN - SCOPUS:43449094707

SN - 0791848108

SN - 9780791848104

T3 - 2007 Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2007

SP - 817

EP - 819

BT - 2007 Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC 2007

T2 - 2007 ASME/STLE International Joint Tribology Conference, IJTC 2007

Y2 - 22 October 2007 through 24 October 2007

ER -