Modeling turbulent flow in a cylindrical tank agitated by side entering 45° inclined blade turbine using computational fluid dynamics (CFD)

Fathonah, Ni’am Nisbatul; Susanti, Ari Diana; Nurtono, Tantular; Winardi, Sugeng; Machmudah, Siti; Kusdianto,; Widiyastuti, W.

doi:10.1063/1.4982327

Cited by 2 publications

(4 citation statements)

References 12 publications

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“…Furthermore, [38] reported "outcome of a study aimed to determine the flow pattern and mixing time as a function of impeller diameter, impeller rotation speed and number of impeller blades. The single phase system with water as working fluid inside the stirred tank was modelled using the combination of multiple reference frame (MRF) and k-E turbulence model and calculated using the computational fluid dynamics (CFD) method.…”

Section: Type I -Mixer With Onementioning

confidence: 99%

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Development of Operating Model for the Design of Stirrer Arms of Slurries: A Review

Okpighe

Shadrack

Nwosu

2022

CJAST

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An in dept review of the Development of Operating Model for the Design of Stirrer Arms of Slurries is reported. The works of several authors were reviewed. These works covered research on the importance of slurries, application of different slurries in the area of Agriculture and agricultural farming, construction and allied industries, foods and pharmaceutical industries, chemical and paints industries. Also considered were the research works on the design, fabrication and test investigation of performance of different stirrer arms. From the review, three key outcomes from three set of researchers were identified thus: Researcher team 1: the TTP propeller was the most efficient in liquid phase mixing; Researcher team 2: the TEET geometry contributed the best quality of the mixing and significantly reduced the cost of the mixing process; Researcher team 3: the two Z blade stirrer arm was considered as the best in terms of mixing effectiveness. These three outcomes appear as standalone and do not give the user(s) information on comparative advantages for deployment of stirrer arms. Consequent on the above, further theoretical and empirical research will need to be done to evaluate the Order of Merit of these stirrer arms to be called to bar.

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Section: Type I -Mixer With Onementioning

confidence: 99%

“…According to [38], "the simulation results showed that the flow pattern formed was single -loop circulation and vortex, depended on stirred tank configuration and operating conditions. Also, there were variations in flow patterns change over time for each simulation.…”

Section: Type I -Mixer With Onementioning

confidence: 99%

Development of Operating Model for the Design of Stirrer Arms of Slurries: A Review

Okpighe

Shadrack

Nwosu

2022

CJAST

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“…A marine propeller is a type of stirrer that produces an axial flow pattern, in which the fluid flows axially from the impeller axis towards the tank wall. The main flow form is one loop circulation, as well as the type of flow pattern produced by IBT in previous studies (Fathonah et al, 2017;Fathonah et al, 2018). This is a characteristic of stirrers with axial flow types in general.…”

Section: Resultsmentioning

confidence: 66%

“…In the following year, Winardi et al (2014) conducted simulations with the same method for the same agitated vessel geometry, but with a different type of impeller, namely a marine propeller. Fathonah et al (2017; used an MRF modelling configuration with the k-ε model to simulate a side-entry stirred tank with an IBT. Their results showed qualitatively that the MRF was able to describe a good flow pattern clearly and was almost similar to the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Hydrodynamic Characteristics in an Agitated Tank with Side-entry Mixer: The Effect of Stirrer Entry Angle

Fathonah¹,

Nurtono²,

Kusdianto³

et al. 2019

IJTech

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The main objective of this work is to study the effect of stirrer entry angle on the hydrodynamic characteristics in an agitated tank with side-entry mixer (side-entry mixing tank) using the CFD simulation method. For validation purposes, the simulation results were compared with the experimental results. Qualitatively, it was found that there was a similar fluid flow in the simulation and experiment results. The agitated tank system consisted of a 40 cm diameter cylindrical tank and a three-blade marine propeller with 4 cm diameter. The working fluid was water, with a liquid height of 40 cm. The rotational speed varied between 100400 rpm, with the stirrer entry angle () set at 0 o , 10 o and 15 o (right-hand side). The modelling configurations used in the simulation were an RNG Standard k-ε model as a turbulence model, coupled with a Multiple Reference Frame (MRF) for the propeller motion approach method in transient conditions. The results show that simulation configuration MRF-RNG k-ε produced realistic results to describe the hydrodynamic characteristics in the side-entry stirred tank. This is supported by the simulation results, which qualitatively produced similar flow patterns in the simulation and experiment. In the quantitative analysis, at higher rotational speeds the circulation flow formed tended to be pushed further from the impeller discharge, which is supported by the average velocity experimental data. Average velocity in the tank had a tendency to increase as the β increased. The predicted average velocities (in m/s) were 0.0175, 0.0185 and 0.0197 at β 0 o , 10 o and 15 o respectively, at a constant rotational speed (400 rpm). Larger β produced high tangential velocity, leading to a strong circulation flow. Applications of this side-entry mixing tank include those in large scale reactors and storage tanks to maintain the homogeneity of the material inside.

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Modeling turbulent flow in a cylindrical tank agitated by side entering 45° inclined blade turbine using computational fluid dynamics (CFD)

Cited by 2 publications

References 12 publications

Development of Operating Model for the Design of Stirrer Arms of Slurries: A Review

Development of Operating Model for the Design of Stirrer Arms of Slurries: A Review

Numerical Study of the Hydrodynamic Characteristics in an Agitated Tank with Side-entry Mixer: The Effect of Stirrer Entry Angle

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