Effect of contact force modeling parameters on the system hydrodynamics of spouted bed using CFD-DEM simulation and 2  factorial experimental design

Yurata, Tarabordin; Piumsomboon, Pornpote; Chalermsinsuwan, Benjapon

doi:10.1016/j.cherd.2019.10.025

Cited by 19 publications

(7 citation statements)

References 64 publications

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“…The P-value is used to determine whether the main effects and interaction effects are significant. If P-value less than 0.05, the model parameters considered as significant (Yurata et al, 2020).…”

Section: Anova Results and Regression Modelmentioning

confidence: 99%

The Effect of Different Parameters on the Amount of Obtained Power the Thermoelectric Generator Placed in the Human Living Tissue

Arslan

TAŞLICA

KARAKURT

et al. 2022

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Studies on thermoelectric generators (TEG) are becoming widespread day by day and the diversity of usage areas of generators is increasing. Individuals using TEG modules appear to be able to produce the required electricity for various uses from their own bodies. It is hoped that electricity will be generated from TEG modules that will be implanted in the human body because of this foresight. In order to obtain power from these TEG modules, which can be used for implantable devices, the temperature difference in different parts of the body is used. In the study, a thermal model of human living tissue was examined to investigate parameters affecting energy harvesting from human with TEG. A realistic TEG model was determined to accurately calculate the power generated by TEG. The thermal model was applied with using the finite volume method (FVM). Four important factors that affect generated power by TEG were chosen such as fat thickness (Lfat), leg length of TEG (Lleg), convection boundary condition on skin (hskin) and heat generation of muscle tissue (Qgen). The effects of these factors on temperature difference of TEG legs and power output were investigated using 2 k factorial design method. As a result, maximum and minimum values were found as 0.26 °C and 1.13 °C respectively for the temperature difference between legs. According to these temperature difference values, the power outputs obtained from the TEG module are 3.86 µW and 55.54 µW, respectively. In addition, Lleg, hskin and Qgen have a positive effect on TEG power output. As analysis of variance (ANOVA) result, the percentage contribution of factors A and B is high, so they have strong effects on both responses.

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Section: Anova Results and Regression Modelmentioning

confidence: 99%

The Effect of Different Parameters on the Amount of Obtained Power the Thermoelectric Generator Placed in the Human Living Tissue

Arslan

TAŞLICA

KARAKURT

et al. 2022

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…The independent inputs with a p value lower than 0.05 at a confidence interval of 95% were identified as significant parameters, as shown in Table . In addition, the trends for different parameters are as plotted in Figure , which show the averaged values of each response at high and low levels of the considered input parameters …”

Section: Resultsmentioning

confidence: 99%

“…In addition, the trends for different parameters are as plotted in Figure 6, which show the averaged values of each response at high and low levels of the considered input parameters. 36 Figure 5a shows the standard deviations of the axial and radial solid volume fraction for the obtained simulation results. For the axial direction, the standard deviations of cases 1 to 4 and 9 to 12 had less value than the typical downer reactor case.…”

Section: Model Validationmentioning

confidence: 99%

Fast Pyrolysis Downer Reactor: Effect of Reactor Geometry on the Hydrodynamics

Soanuch

Korkerd

Pareek

et al. 2022

Ind. Eng. Chem. Res.

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Downer reactors are the reactors of choice for fast chemical reactions, such as those associated with cracking of heavier feedstock in petroleum refineries. The objective of this study was to investigate the hydrodynamics of the downer reactor for biomass fast pyrolysis with specific emphasis on understanding the effect of the reactor geometry on the system hydrodynamics. Three-dimensional transient Eulerian–Eulerian simulations using the kinetic theory of granular flow were used to evaluate the effect of reactor tapering and cone position on the resulting hydrodynamics. It was found that optimal positioning of the cone could improve the mixing, while the suitable tapered downers could improve radial solid distribution while still resulting in a mean gas residence time within a range suitable for biomass fast pyrolysis.

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“…When u g > U mt , the "characteristic curve" shows some fluctuations in the bed pressure drop, which come from the change in the kinetic energy of particles. Yurata et al 47 found that an increase in the translation kinetic energy reduces the height of the fountain zone, whereas a decrease in the rotation kinetic energy led to an increase in the fluctuations of bed pressure drop.…”

Section: Numerical Model Validation 421 Effect Of Contact Models On U Mfmentioning

confidence: 99%

Particle Adhesion Effects on Particle Size Distribution of Titania Nanoparticle Agglomerates in a Conical Fluidized Bed: A Computational Fluid Dynamics and Discrete Element Method Adhesive Approach

Bahramian,

Olazar

2023

Ind. Eng. Chem. Res.

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Effect of contact force modeling parameters on the system hydrodynamics of spouted bed using CFD-DEM simulation and 2 factorial experimental design

Cited by 19 publications

References 64 publications

The Effect of Different Parameters on the Amount of Obtained Power the Thermoelectric Generator Placed in the Human Living Tissue

The Effect of Different Parameters on the Amount of Obtained Power the Thermoelectric Generator Placed in the Human Living Tissue

Fast Pyrolysis Downer Reactor: Effect of Reactor Geometry on the Hydrodynamics

Particle Adhesion Effects on Particle Size Distribution of Titania Nanoparticle Agglomerates in a Conical Fluidized Bed: A Computational Fluid Dynamics and Discrete Element Method Adhesive Approach

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