Schnegas, StefanStefanSchnegasSalikov, VitalijVitalijSalikovAntonyuk, SergiySergiyAntonyukHeinrich, StefanStefanHeinrichRajabi, NegarNegarRajabiMüller, JörgJörgMüller2020-08-262020-08-262015Microfluidics and Nanofluidics 4 (18): 685-694 (2015)http://hdl.handle.net/11420/7157The spiral-shaped microchannel geometry of a microfluidic system was investigated for a separation process of suspension-adapted Chinese hamster ovary cells. The fluid phase of the transported cell suspension thereby consists of the culture medium TC42, with added glutamine, and saltwater. Paths of fictive cells reproduced as massless and dimensionless particles, i.e., certain flow lines of the fluid phase, have been analyzed according to their dynamic motion behavior and exposure to shear stresses with single-phase, steady-state computational fluid dynamic simulation results. A parameter study has been made by varying the volume flow. The vertical motion component of the paths inside the inlet and the spiral geometry are also in main focus contrary to many publications, in which the lateral component plays the major role. Two periods with a local path accumulation have been identified. The shear stresses in terms of the energy dissipation rate were calculated along the paths to estimate possible cell loading. At the highest modeled volume flow, a cell lysis probability was estimated to be likely for a small cell fraction.en1613-498220154685694Biological cellsDean effectEnergy dissipationMotion pathSpiral-shaped microchannelJournal Article10.1007/s10404-014-1468-xOther