RT info:eu-repo/semantics/article
T1 A semi-empirical model to predict resonant conditions in valveless asymmetric pumping
A1 Rubio Chaves, Manuel Ángel
A1 Anatol Hernández, Joaquin
A1 Sierra Pallarés, José Benito
A1 Barrios Collado, César
A1 Castro Ruiz, Francisco
K1 Biological Fluid Dynamics
K1 Peristaltic pumping
K1 Bombeo peristáltico
AB The Liebau effect generates a net flow without the need for valves. For the Liebau effect pumping phenomenon to occur, the pump must have specific characteristics. It needs tubes with different elastic properties and an actuator to provide energy to the fluid. The actuator periodically compresses the more flexible element. Furthermore, asymmetry is a crucial factor that differentiates between two pumping mechanisms: impedance pumping and asymmetric pumping. In this work, a model based on the fluid dynamics of an asymmetric valveless pump under resonant conditions is proposed to determine which parameters influence the pumped flow rate. Experimental work is used to validate the model, after which each of the parameters involved in the pump performance is dimensionlessly analysed. This highlights the most significant parameters influencing the pump performance such as the actuator period, length tube ratio and tube diameters. The results point out ways to increase a valveless asymmetric pump's net-propelled flow rate, which has exciting applications in fields such as biomedicine. The model also allows for predicting the resonance period, a fundamental operating parameter for asymmetric pumping.
PB Cambridge University Press
SN 0022-1120
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/76112
UL https://uvadoc.uva.es/handle/10324/76112
LA eng
NO Journal of Fluid Mechanics, marzo 2025, vol. 1007, A2
NO Producción Científica
DS UVaDOC
RD 26-jun-2025