Analysis of flow resistance property for valve-less piezoelectric pump with hemisphere-segment bluff-body
Abstract
Abstract: Based on the principle that the flow resistances on spherical surface and round surface of hemisphere-segment in pump chamber are unequal, a novel valve-less piezoelectric pump with hemisphere-segment bluff-body (HSBB) is presented. The pumping performance depends directly on the flow resistances and their change law on hemisphere-segment surfaces. Therefore, it is necessary to study the flow resistance property of HSBB. This study finds that the forward and reverse flow resistances on HSBB cannot be solved simultaneously by traditional theoretical and experimental hydrodynamics equivalent method for flow resistance around non-sphere. Based on the geometric features of hemisphere-segment the method of Equivalent Flow Resistance Diameter was proposed, and the forward and reverse equivalent spheres respectively corresponding to the spherical and round surface of hemisphere-segment were separated and the sphere diameters were calculated. Flow resistance measuring device was designed, and the flow resistance coefficient of hemisphere-segment was obtained by testing and calculating. The theoretical formulas of forward and reverse flow resistance on hemisphere-segment were established. And through experiments it is verified that the method proposed in this paper is feasible and can be applied to analyze and calculate flow resistance and pumping flow rate in pump.
Keywords: valve-less piezoelectric pump, equivalent flow resistance, flow around hemisphere-segment, flow resistance coefficient
DOI: 10.33440/j.ijpaa.20210401.149
Citation: Li S D, Zhao W, Ji J, Hu C Q, Hu X Q. Analysis of flow resistance property for valve-less piezoelectric pump with hemisphere-segment bluff-body. Int J Precis Agric Aviat, 2021; 4(1): 14–21.
Full Text:
PDFReferences
Lintel V H T G, Pol V D F C, Bouwstra S. A piezoelectric micropump based on micromachining of silicon. Sensors and Actuators, 1988, 15(2): 153–167.
Shoji S, Nakagawa S, Esashi M. Micropump and sample-injector for integrated chemical analyzing systems. Sensors and Actuators A: Physical, 1990, 21(1-3): 189–192.
Ederer I, Raetsch P, Chullerus W S, et al. Piezoelectric driven micropump for on-demand fuel-drop generation in an automobile heater with continuously adjustable power output. Sensors and Actuators A: Physical, 1997, 62(1-3): 752–755.
Yan X J, Yuan H Z, Zhou X X, et al. Control efficacy of different pesticide formulations and fan-nozzle model on wheat aphids by UAVs. Int J Precis Agric Aviat, 2020, 3(2): 35–39.
Zhou Q Q, Xue X Y, Qin W C, et al. Analysis of pesticide use efficiency of a UAV sprayer at different growth stages of rice. Int J Precis Agric Aviat, 2020, 3(1): 38–42.
Kong H, Yi L L, Lan Y B, et al. Exploring the operation mode of spraying cotton defoliation agent by plant protection UAV. Int J Precis Agric Aviat, 2020, 3(1): 43–48.
Erik S, Goran S. A valve-less diffuser /nozzle-based fluid pump. Sensors and Actuators A, 1993, 39(12): 159–167.
Xia Q X, Zhang J H, Lei H, et al. Theoretical Analysis and Experimental Verification on Flow Field of Piezoelectric Pump with Unsymmetrical Slopes Element. Chinese Journal of Mechanical Engineering, 2009, 22(5): 735–744. (in Chinese)
Zhang J H, Li Y L, Xia Q X. Analysis of the pump volume flow rate and tube property of the piezoelectric valve-less pump with Y-shape tubes. Chinese Journal of Mechanical Engineering, 2007, 43(11): 136–141. (in Chinese)
Huang J, Zhang J H, Wang S Y. Theory and experimental verification on valve-less piezoelectric pump with multistage Y-shape tubes. Opt. Precision Eng., 2013, 21(2): 423–430. (in Chinese)
Izzo I, Accoto D, Menciassi A, et al. Modeling and experimental validation of a piezoelectric micropump with novel no-moving-part valves. Sensors and Actuators A: Physical, 2007, 133(1): 128–140.
Forster F K, Williams B E. Parametric design of fixed-geometry microvalves—the Tesser valve. Proceedings IMECE, Paper, 2002 (33628): 431–437.
Forster F K, Walter T. Design Optimization of Fixed-Valve Micropumps for Miniature Cooling Systems. ASME Conference Proceedings, 2007(42770): 137–145.
Wu L P. Theoretical and experimental research of valve-less piezoelectric pump with Flat-cone-shape pump chamber. Changchun: Jilin University, 2008. (in Chinese)
Zhang J H, Li H, Zhao C S. The Valve-less Piezoelectric Pump with Multiple Rotatable Panes inside: China ZL 22006 1 0114526.8. http://pdf.soopat.com/TiffFile/PdfView/35158FB600C93EDA6F0DC588B 53988D6. (in Chinese)
Wu W Y. Fluid Mechanics. Beijing: Peking University Press, 1983. (in Chinese)
Lin J Zh. Fluid-solid two-phase coherent vortex flow and hydrodynamic stability. Beijing: Tsinghua University Press, 2003. (in Chinese)
Ge Z T, Ji J, Lan Y B, et al. Analysis and test on influence of caudal- fin
on performance of valveless piezoelectric pump. Journal of Drainage and Irrigation Machinery Engineering, 2017,35(01): 87–92.
Fu J, Zhang J H, Wang Y, et al. Research on semi-flexible valve piezoelectric pump. Journal of Vibration Measurement & Diagnosis, 2019, 39(05): 1005–1010.
Ji J, Zhang J H, Xia Q X, et al. Theoretical Analysis and Experimental Verification on Valve-less Piezoelectric Pump with Hemisphere-segment Bluff-body. Chinese Journal of Mechanical Engineering, 2014, 27(3): 595–605. (in Chinese)
Zheng S L, Yuan J Z. Machining technique and application manual of non-metallic mines. Beijing: Metallurgical Industry Press, 2005. (in Chinese).
Tripathi A, Chhabra R P, Sundararajan T. Predictions of drag and shape of a fluid particle in creeping flow by upper bound approach. International Journal of Engineering Science, 1995, 33(1): 13–25.
Ui T J, Husseyr R G, Roger R P. Stokes drag on a cylinder in axial motion Physics of Fluids, 1984, 27(4): 787–795.
Davis A M J. Stokes drag on a disk sedimenting toward a plane or with other disks: additional effects of a side wall or free surface. Physics of Fluids A: Fluid Dynamics, 1990, 2(3): 301–312.
Ji J, Zhang J H, Zhao C. Flow resistance measuring device for valve-less piezoelectric pump: China, 201310243970.X. 2013. (in Chinese)
Clift R, Grace J R, Weber M E. Bubbles, Drops and Particles. New York: Academic Press, 1978.
Refbacks
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.