The effect of axial impeller geometry on the link between power and flow numbers

John, Thomas; Fonte, Cláudio P.; Kowalski, Adam; Rodgers, Thomas L.

doi:10.1002/aic.17871

Cited by 3 publications

(2 citation statements)

References 47 publications

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“…There are therefore several models that describe turbulent flow, the model that is use in this study is (k-𝜀) this model is a two-equation model and is one of the most powerful computational models used to calculate complex turbulent flows, and it is mathematically stable. The two equations that need to be solved are the turbulence kinetic energy equation (k) and the turbulence dissipation rate equation (𝜀) [17]:…”

Section: Turbulence Modelmentioning

confidence: 99%

Study the effect of a new design of a twisted impeller blade on the vortexes formation and power consumption using a centric and eccentric stirred tank experimentally and numerically

Salho,

Hamzah

2024

Preprint

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Vortex formation in stirred tanks is one of the problems facing many stirred tank designers. The current study depicts experimentally and numerically the effect of changing the impeller structure and its location in a twisted shape on the shape of the vortex, energy consumption, flow patterns, and turbulent kinetic energy. Numerically, the finite volume method was used, the mathematical model used the Volume of Fluid to simulate the free surface between air and water, and the mathematical model (k- ε ) was used to simulate turbulent flow. Rotational speeds of the impeller of different values between (150-450 RPM) were applied, noting the effect of changing the location of the impeller experimentally and numerically on the flow parameters and other parameters. The current study showed that the rate of deviation in the values of torque and energy consumption between the numerical and practical studies is relatively acceptable in addition to the convergence in the shape of the vortex. The results obtained showed that the shape and location of the impeller affect the shape of the vortex, and changing the rotation speed affects the growth and depth of the vortex. The study also showed that the amount of torque for the un-baffled stirred tank is less than that for the eccentric stirred tank, depending on the rotation speed. For example, at the rotation speed (350RPM) it was (0.034 N.m) and at the same speed, it was (0.093 N.m) for the eccentric location. The study also showed a comparison of flow patterns between the central and eccentric locations of the impeller.

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Section: Turbulence Modelmentioning

confidence: 99%

Study the effect of a new design of a twisted impeller blade on the vortexes formation and power consumption using a centric and eccentric stirred tank experimentally and numerically

Salho,

Hamzah

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Stirred vessels play a pivotal role across many industrial applications, spanning pharmaceuticals, agriculture, chemicals, petroleum, biology, and food 1–5 . According to the MarketsandMarkets™ report, 6 the industrial mixing equipment market is expected to rise to USD 2.7 billion by 2025, with a surge in popularity for stirring device that offers low‐energy consumption, high‐efficiency blending, and broad application. The agitated tank, which leverages the impeller rotation to convert mechanical energy into the kinetic energy of the fluid, increasing mixing and reinforcing heat and mass transfer within the reactor, is typically classified as either radial, axial, or hybrid, depending on the vessel flow pattern generated by the impeller 7,8 .…”

Section: Introductionmentioning

confidence: 99%

Multi‐objective optimization of radially stirred tank based on CFD and machine learning

Zhao,

Fan,

Lin

et al. 2023

AIChE Journal

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Structural optimization is essential to improve the performance of mixing equipment. An efficient optimization strategy based on computational fluid dynamics, machine learning, and the multi‐objective genetic algorithm was proposed to predict and optimize the performance of the stirred tank. Single‐factor analysis was performed to study the effects of structural parameters on power consumption and mixing time, which were reduced by 16.0% and 1.4%, respectively, in the optimized stirred vessel. To further optimize the stirred tank geometries and maximize the integrated performance, XGB coupled NSGA‐ІІ were utilized to minimize the power consumption and mixing time. The optimal design parameters from the Pareto front were identified by two well‐known decision‐making methods (LINMAP and TOPSIS), which decreased power consumption and mixing time by 12.3% and 13.4% compared to the stirred tank with the baseline structure. This research further confirmed the accuracy and reliability of the machine learning‐based optimization method.

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Intensification of power efficiency by grooves in flanged impellers

Rivadeneyra-Romero¹,

Mendoza-Escamilla

Alonzo-García

et al. 2023

Chemical Engineering Journal

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The effect of axial impeller geometry on the link between power and flow numbers

Cited by 3 publications

References 47 publications

Study the effect of a new design of a twisted impeller blade on the vortexes formation and power consumption using a centric and eccentric stirred tank experimentally and numerically

Study the effect of a new design of a twisted impeller blade on the vortexes formation and power consumption using a centric and eccentric stirred tank experimentally and numerically

Multi‐objective optimization of radially stirred tank based on CFD and machine learning

Intensification of power efficiency by grooves in flanged impellers

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