TY - JOUR

T1 - Topological flow transformations in a universal vortex bioreactor

AU - Naumov, Igor V.

AU - Gevorgiz, Ruslan G.

AU - Skripkin, Sergey G.

AU - Tintulova, Maria V.

AU - Tsoy, Mikhail A.

AU - Sharifullin, Bulat R.

N1 - This research of flow transformations in a vortex bioreactor was funded by the Russian Science Foundation , grant number 19-19-00083 , development of optical diagnostic technique was carried out within the framework of a state contract with IT SB RAS. The authors are grateful to the financial support for biomaterial study provided by the Institute of Biology of the Southern Seas of RAS (No 121030300149-0). Публикация для корректировки.

PY - 2023/9

Y1 - 2023/9

N2 - Research into the flow structure in an aerial vortex bioreactor is relevant for developing the methods to grow cell cultures. It is especially important in the case when, with the culture growth in the bioreactor, such parameters of the medium as density and viscosity can significantly change, accordingly altering the characteristic flow regimes. Since the cultivated culture is not transparent in most cases, it is impossible to visually determine the flow regime. Therefore, a detailed study of the regularities of flow regimes in an aerial vortex reactor is of great fundamental and applied interest. The research was carried out in an 8.5 L universal glass aerial vortex bioreactor, with a washer freely floating on its surface and stabilizing the motion of the working fluid. The regularities of the vortex motion of the culture medium depend on its volume and the rotation intensity of the activator generating vortex motion in the air. The air vortex generated by the impeller (activator) above the liquid surface spins the working fluid and a free-floating washer. The study reveals that despite the complex configuration of the flow stabilizing device (a free-floating washer), the observed vortex structure and its dynamics with increasing flow swirl intensity coincides with the structure of a confined vortex flow in a cylindrical container for both single-fluid and immiscible two-fluid configurations.

AB - Research into the flow structure in an aerial vortex bioreactor is relevant for developing the methods to grow cell cultures. It is especially important in the case when, with the culture growth in the bioreactor, such parameters of the medium as density and viscosity can significantly change, accordingly altering the characteristic flow regimes. Since the cultivated culture is not transparent in most cases, it is impossible to visually determine the flow regime. Therefore, a detailed study of the regularities of flow regimes in an aerial vortex reactor is of great fundamental and applied interest. The research was carried out in an 8.5 L universal glass aerial vortex bioreactor, with a washer freely floating on its surface and stabilizing the motion of the working fluid. The regularities of the vortex motion of the culture medium depend on its volume and the rotation intensity of the activator generating vortex motion in the air. The air vortex generated by the impeller (activator) above the liquid surface spins the working fluid and a free-floating washer. The study reveals that despite the complex configuration of the flow stabilizing device (a free-floating washer), the observed vortex structure and its dynamics with increasing flow swirl intensity coincides with the structure of a confined vortex flow in a cylindrical container for both single-fluid and immiscible two-fluid configurations.

KW - Aerial bioreactor, complex vortex

KW - Marine microalgae

KW - Vortex flow modeling

KW - Vortex flows

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85162987787&origin=inward&txGid=410589ac8f95f4dd667ff6e83d895889

UR - https://www.mendeley.com/catalogue/f15d16e8-d458-3bbf-9d77-140138310886/

U2 - 10.1016/j.cep.2023.109467

DO - 10.1016/j.cep.2023.109467

M3 - Article

VL - 191

JO - Chemical Engineering and Processing - Process Intensification

JF - Chemical Engineering and Processing - Process Intensification

SN - 0255-2701

M1 - 109467

ER -