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Efficiency determination of an electrostatic lunar dust collector by discrete element method
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10.1063/1.4739734
/content/aip/journal/jap/112/2/10.1063/1.4739734
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/2/10.1063/1.4739734

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the ELDC configuration to protect optical/photovoltaic surfaces at the worst case scenario.

Image of FIG. 2.
FIG. 2.

The ELDC geometry and particle placement in sections 1 and 2 (100 lunar dust particles at the middle initially forming a line inside the particle factory; L = W = 10 cm and D = 5 cm).

Image of FIG. 3.
FIG. 3.

Sensitivity analysis on electrical screening distance around the particles (one hundred 20-μm-sized particles at uniform electrostatic field; L = W = 10 cm, D = 5 cm, and ΔV = 100 V).

Image of FIG. 4.
FIG. 4.

Collection efficiency as a function of provided voltage via 3 different models: Lagrangian-based approach with a uniform e-field, Lagrangian-based approach with a non-uniform e-field, and Eulerian-based approach. In all 3 models: dp = 20 μm, φs = 100 V, L = W = 10 cm, and D = 5 cm).

Image of FIG. 5.
FIG. 5.

Effect of particle number concentration on collection efficiency ofthe ELDC (dp = 20 μm, φs = 100 V, ΔV = 100 V, L = W = 10 cm, and D = 5 cm).

Image of FIG. 6.
FIG. 6.

The ELDC capacitance at different number of subsections (L = W = 10 cm and D = 5 cm at ΔV = 100 V).

Image of FIG. 7.
FIG. 7.

Distribution of surface charge on ELDC plates at 4 different provided voltages (pC).

Image of FIG. 8.
FIG. 8.

DEM results for two different sizes of the ELDC and comparison with Eulerian-based model.

Tables

Generic image for table
Table I.

Collection efficiency as a function of provided voltage for three applied models.

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/content/aip/journal/jap/112/2/10.1063/1.4739734
2012-07-31
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Efficiency determination of an electrostatic lunar dust collector by discrete element method
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/2/10.1063/1.4739734
10.1063/1.4739734
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