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RESEARCH ARTICLE

Flow dynamical behavior and performance of a micro viscous pump with unequal inlet and outlet areas

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Pages 441-451 | Received 28 Sep 2015, Accepted 27 Apr 2016, Published online: 17 Jun 2016

Figures & data

Figure 1. The standard L-shaped housed viscous pump.

Figure 1. The standard L-shaped housed viscous pump.

Figure 2. The alternative pump configurations: (a) enlarged inlet and (b) enlarged outlet.

Figure 2. The alternative pump configurations: (a) enlarged inlet and (b) enlarged outlet.

Table 1. Validation of the numerical method.

Table 2. Validation of grid independence.

Figure 3. Pump performance with different Reynolds numbers: (a) dimensionless mass flow rate and (b) dimensionless driving power.

Figure 3. Pump performance with different Reynolds numbers: (a) dimensionless mass flow rate and (b) dimensionless driving power.

Figure 4. The experimental apparatus: (a) schematic diagram, (b) test rig, and (c) pump assembly schematic.

Figure 4. The experimental apparatus: (a) schematic diagram, (b) test rig, and (c) pump assembly schematic.

Figure 5. Measured flow rate (a) with a constant outlet area and (b) with a constant inlet area.

Figure 5. Measured flow rate (a) with a constant outlet area and (b) with a constant inlet area.

Figure 6. Pump performance under different pressure loads: (a) dimensionless mass flow rate and (b) dimensionless driving power.

Figure 6. Pump performance under different pressure loads: (a) dimensionless mass flow rate and (b) dimensionless driving power.

Figure 7. Impact of the Reynolds number on pump performance.

Figure 7. Impact of the Reynolds number on pump performance.

Figure 8. Impact of the pressure load on pump performance: (a) dimensionless mass flow rate and (b) dimensionless driving power.

Figure 8. Impact of the pressure load on pump performance: (a) dimensionless mass flow rate and (b) dimensionless driving power.

Figure 9. Streamlines for pumps with different inlet opening angles.

Figure 9. Streamlines for pumps with different inlet opening angles.

Figure 10. Flow patterns for the pump with θ= 30°.

Figure 10. Flow patterns for the pump with θ = 30°.