Computational Flow Modeling of Multiphase Mechanically Agitated Reactors

Ranganathan, Panneerselvam; Savithri, S.

doi:10.5772/7109

Cited by 3 publications

(2 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For steady-state problems, the time-step behaves like an 'acceleration parameter', to guide the approximate solutions in a physically based manner to a steady-state solution. This reduces the number of iterations required for convergence to a steady-state, or to calculate the solution for each time step in a time-dependent analysis [22]. 3-Dimensional unstructured mesh with tetrahedral and prismatic elements for homogenizer simulation.…”

Section: Methodsmentioning

confidence: 99%

“…The impeller design is carried out with Solidworks and imported into the ANSYS CFX environment for simulation. The properties of the carrot-orange soup and the impeller [22], as used for simulation in the ANSYS environment are shown in Table 1. The geometrical dimensions of the homogenizer vessel and impellers used for this study are shown in Figure 6.…”

Section: Homogenizer Configurationmentioning

confidence: 99%

See 1 more Smart Citation

Design of Stirrer Impeller with Variable Operational Speed for a Food Waste Homogenizer

2016

View full text Add to dashboard Cite

Abstract:A conceptualized impeller called KIA is designed for impact agitation of food waste in a homogenizer. A comparative analysis of the performance of KIA is made with three conventional impeller types, Rushton, Anchor, and Pitched Blade. Solid-liquid mixing of a moisture-rich food waste is simulated under various operational speeds, in order to compare the dispersions and thermal distributions at homogenous slurry conditions. Using SolidWorks, the design of the impellers employs an Application Programming Interface (API) which acts as the canvas for creating a graphical user interface (GUI )for automation of its assembly. A parametric analysis of the homogenizer, at varying operational speeds, enables the estimation of the critical speed of the mixing shaft diameter and the deflection under numerous mixing conditions and impeller configurations. The numerical simulation of the moisture-rich food waste (approximated as a Newtonian carrot-orange soup) is performed with ANSYS CFX v.15.0. The velocity and temperature field distribution of the homogenizer for various impeller rotational speeds are analyzed. It is anticipated that the developed model will help in the selection of a suitable impeller for efficient mixing of food waste in the homogenizer.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Homogenizer Configurationmentioning

confidence: 99%

Design of Stirrer Impeller with Variable Operational Speed for a Food Waste Homogenizer

2016

View full text Add to dashboard Cite

show abstract

Using a flexible shaft agitator to enhance the rheology of a complex fungal fermentation culture

Ghobadi

Ogino

Ogawa

et al. 2016

Bioprocess Biosyst Eng

View full text Add to dashboard Cite

The rheology behavior of biological fluids particularly when the viscosity is high and rheology is complex, is an important issue to understand, particularly for studies in mass-transfer and for solving technical problems with mixing in stirred bioreactors. In this paper, the use of a Swingstir(®) impeller during the fermentation of Aspergillus oryzae resulted in decreases from the parameters of a power-law model, in viscosity and in the thixotropic behavior of a cultivation broth. The results showed that both the K L a and the alpha amylase activity were improved when using the Swingstir(®) in comparison with Fullzone(®) impeller (FZ) at the same level of energy consumption. Increasing the pellet porosity during mixing via the Swingstir(®) resulted in increases in oxygen mass transfer and the average shear stress.

show abstract

Mixing Characteristics of Submerged Fungal Fluid in a Flexible Stirred Mixer System

Ghobadi¹,

Ogino²,

Ogawa

et al. 2018

J. Chem. Eng. Japan / JCEJ

View full text Add to dashboard Cite

Computational Flow Modeling of Multiphase Mechanically Agitated Reactors

Cited by 3 publications

References 44 publications

Design of Stirrer Impeller with Variable Operational Speed for a Food Waste Homogenizer

Design of Stirrer Impeller with Variable Operational Speed for a Food Waste Homogenizer

Using a flexible shaft agitator to enhance the rheology of a complex fungal fermentation culture

Mixing Characteristics of Submerged Fungal Fluid in a Flexible Stirred Mixer System

Contact Info

Product

Resources

About