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4 article(s) from Jing, Dalei

Optimal fractal tree-like microchannel networks with slip for laminar-flow-modified Murray’s law

Dalei Jing,
Shiyu Song,
Yunlu Pan and
Xiaoming Wang

Beilstein J. Nanotechnol. 2018, 9, 482–489, doi:10.3762/bjnano.9.46

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Figure 1: Simplified schematic of the no-slip and slip conditions. ν_lw is the relative velocity between the w...

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Figure 2: Schematic of a self-similar fractal tree-like microchannel network with branching number N = 2 and ...

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Figure 3: The dimensionless hydraulic resistance of laminar flow in a fractal tree-like microchannel network ...

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Figure 4: The optimal diameter ratio to achieve minimum hydraulic resistance versus (a) the branching number N...

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Full Research Paper

Published 08 Feb 2018

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Numerical investigation of the tribological performance of micro-dimple textured surfaces under hydrodynamic lubrication

Kangmei Li,
Dalei Jing,
Jun Hu,
Xiaohong Ding and
Zhenqiang Yao

Beilstein J. Nanotechnol. 2017, 8, 2324–2338, doi:10.3762/bjnano.8.232

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Figure 1: Three-dimensional geometric model of fluid in a micro-dimple array and a single micro-dimple unit.

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Figure 2: The computational domain.

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Figure 3: The division of the fluid domain in the micro-dimple unit.

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Figure 4: Variations of the dimensionless average film carrying force and the computing time.

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Figure 5: The typical meshed model of a micro-dimple unit.

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Figure 6: Pressure distribution on the upper wall of the lubricant in the micro-dimple unit.

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Figure 7: Pressure distribution of the cross-sectional area of the lubricant in a micro-dimple unit.

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Figure 8: The pressure distribution on the upper wall for (a) Re = 5, (b) Re = 50 and (c) Re = 250.

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Figure 9: Effect of Reynolds number on the pressure distribution on the middle section of the micro-dimple un...

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Figure 10: Effect of texture density and aspect ratio on the dimensionless average film carrying force for (a) ...

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Figure 11: Variation of the fluid velocity in the micro-dimple unit with (a) λ = 0.025, (b) λ = 0.075, (c) λ =...

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Figure 12: Effect of texture density and aspect ratio on the dimensionless average film shear force for (a) Re...

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Figure 13: Effect of texture density and aspect ratio on the friction coefficient for (a) Re = 5, (b) Re = 50 ...

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Figure 14: Effect of Reynolds number on (a) the dimensionless average film carrying force, (b) the dimensionle...

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Figure 15: Effect of Reynolds number on the optimum texture density and optimum aspect ratio.

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Full Research Paper

Published 06 Nov 2017

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The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential

Dalei Jing,
Yunlu Pan and
Xiaoming Wang

Beilstein J. Nanotechnol. 2017, 8, 1515–1522, doi:10.3762/bjnano.8.152

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Figure 1: The schematic of hydrodynamic lubrication in a 1D slider bearing considering the effect of the EDL. ...

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Figure 2: Dimensionless electrical potential distribution obtained by solving the linear PBE and the nonlinea...

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Figure 3: The effect of the zeta potential on the apparent viscosity of the lubricant based on different assu...

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Figure 4: The effect of the zeta potential on the apparent viscosity of the lubricant and the dependence of t...

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Figure 5: Comparison of the hydrodynamic load capacity of the lubricant including the effect of the zeta pote...

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Figure 6: The effect of zeta potential on the hydrodynamic load capacity of the lubricant and the dependence ...

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Full Research Paper

Published 25 Jul 2017

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Electroviscous effect on fluid drag in a microchannel with large zeta potential

Dalei Jing and
Bharat Bhushan

Beilstein J. Nanotechnol. 2015, 6, 2207–2216, doi:10.3762/bjnano.6.226

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Figure 1: Schematic of the electroviscous effect in a microchannel formed by two infinitely large parallel pl...

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Figure 2: The dimensionless electrical potential as a function of dimensionless wall-normal coordinate in the...

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Figure 3: The dimensionless net ionic concentration as a function of dimensionless wall-normal coordinate in ...

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Figure 4: The effect of zeta potential on the average electrical conductivity in the non-overlapping EDL.

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Figure 5: The dimensionless velocity field in the microchannel with different conditions of surface charge an...

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Figure 6: The effect of EDL with high zeta potential on the flow rate of the pressure-driven flow in the micr...

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Figure 7: The effect of EDL with high zeta potential on the flow rate of the pressure-driven flow in the micr...

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Figure 8: The effect of zeta potential on the electrical field strength of the pressure-driven fluid flow in ...

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Full Research Paper

Published 24 Nov 2015

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