Improving Hydrodynamics and Energy Efficiency of Bioreactor by Developed Dimpled Turbine Blade Geometry DOI Open Access

Anton Ruzhanskyi,

Sergii Kostyk, Igor Korobiichuk

и другие.

Symmetry, Год журнала: 2025, Номер 17(5), С. 693 - 693

Опубликована: Апрель 30, 2025

The hydrodynamic efficiency of bioreactors is contingent upon the design impeller, particularly blade geometry, which influences flow symmetry. This study evaluates impact dimpled surfaces on blades a turbine impeller mixing processes. Investigations were conducted using simulations in ANSYS (2021R2) with k-ε turbulence model and experiments measuring vortex funnel depth power consumption at 247 rpm an 11-L cylindrical vessel. Results indicate that dimples disrupt rotational symmetry blades, increasing volume-averaged velocity from 0.312 m/s to 0.321 (a 2.9% increase); maximum shear strain rate 161 s−1 1442 s−1; turbulent frequency 183 290 58% increase). rose 44 63 43% improvement), increased mm 50 14% increase), indicating enhanced homogenization. facilitates efficient processing sensitive biological organisms, such as mycoplasmas, more robust structures, including fungi mycelium. However, by 4.5% (from 4.9 W 5.1 W). Thus, disrupting intensifies processes, enhancing efficiency, but requires optimization reduce energy costs, offering prospects for advancing biotechnological systems.

Язык: Английский

The Impact of Surface Roughness on the Friction and Wear Performance of GCr15 Bearing Steel DOI Creative Commons
Tiantian He, Wen-Bo Chen, Zeyuan Liu

и другие.

Lubricants, Год журнала: 2025, Номер 13(4), С. 187 - 187

Опубликована: Апрель 18, 2025

Surface roughness plays a crucial role in determining surface quality, influencing factors such as vibration, noise, assembly precision, lubrication, and wear resistance bearings. This research examines how (Sa) affects the friction characteristics of GCr15 steel under conditions with adequate oil lubrication while varying applied load. The findings indicate that an increase Sa, coefficient also increases. As load rises from 15 N to 35 N, remains relatively constant. However, higher loads lead more severe microprotrusions on steel. area first decreases then increases Sa minimum occurs when is 0.5 μm. Additionally, back propagation neural network (BPNN) model has been developed predict performance Validation experiments show average prediction error for BPNN 10.64%.

Язык: Английский

Процитировано

1
Optimizing Nanoparticle Dispersion and Heat Transfer in Williamson Nanofluids Under Magnetic Influence DOI Creative Commons

Sharanayya Swami,

Suresh Biradar,

Jagadish V. Tawade

и другие.

Partial Differential Equations in Applied Mathematics, Год журнала: 2025, Номер unknown, С. 101148 - 101148

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Improving Hydrodynamics and Energy Efficiency of Bioreactor by Developed Dimpled Turbine Blade Geometry DOI Open Access

Anton Ruzhanskyi,

Sergii Kostyk, Igor Korobiichuk

и другие.

Symmetry, Год журнала: 2025, Номер 17(5), С. 693 - 693

Опубликована: Апрель 30, 2025

The hydrodynamic efficiency of bioreactors is contingent upon the design impeller, particularly blade geometry, which influences flow symmetry. This study evaluates impact dimpled surfaces on blades a turbine impeller mixing processes. Investigations were conducted using simulations in ANSYS (2021R2) with k-ε turbulence model and experiments measuring vortex funnel depth power consumption at 247 rpm an 11-L cylindrical vessel. Results indicate that dimples disrupt rotational symmetry blades, increasing volume-averaged velocity from 0.312 m/s to 0.321 (a 2.9% increase); maximum shear strain rate 161 s−1 1442 s−1; turbulent frequency 183 290 58% increase). rose 44 63 43% improvement), increased mm 50 14% increase), indicating enhanced homogenization. facilitates efficient processing sensitive biological organisms, such as mycoplasmas, more robust structures, including fungi mycelium. However, by 4.5% (from 4.9 W 5.1 W). Thus, disrupting intensifies processes, enhancing efficiency, but requires optimization reduce energy costs, offering prospects for advancing biotechnological systems.

Язык: Английский

Процитировано

0