Combination rules for multi-chamber valveless micropumps

Alireza Azarbadegan, Ian Eames, Adam Wojcik, Cesar Cortes Quiroz, William Suen

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The general design rules indicate that when identical macroscale pumps (each with a maximum flowrate Qm, and maximum pressure drop ΔPmax) are combined in series the maximum flowrate becomes Qm, but the maximum pressure is 2ΔPmax, while when combined in parallel the maximum flowrate is 2Qm, but the maximum pressure is ΔPmax. In this paper, we test whether these design rules apply to microscale valveless micropumps using highly resolved CFD calculations. The variation of flow with pump pressure-drop was studied by varying the resistance of an external circuit. The analysis confirms that the design rules for macroscale pumps are applicable to microscale pumps. The study has also enabled the analysis of the influence of different forcing strategies on the pump performance.
Original languageEnglish
Article number6507239
Pages (from-to)1133-1139
Number of pages7
JournalJournal of Microelectromechanical Systems
Issue number5
Early online date23 Apr 2013
Publication statusPublished - Oct 2013


  • CFD, microfluidics, micropump, microsystem design, multichamber, numerical analysis, valveless


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