Three dimensional thermal Lattice Boltzmann simulation of heating/cooling spheres falling in a Newtonian liquid

Hashemi, Zahra; Abouali, Omid; Kamali, Reza

doi:10.1016/j.ijthermalsci.2014.03.008

Cited by 47 publications

(16 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where fi, Ti are distribution functions for flow and temperature field respectively, and (4) ωi is weighting coefficient and for D3Q19 model is defined as…”

Section: Methodsmentioning

confidence: 99%

“…The case studied by Dan and Wachs [23] and Hashemi et al [4] is used here as a benchmark test to validate the capability of our code for simulating thermal sphere particles settling in channel. Three cases are considered: one cold particle (Gr=-100), one isothermal particle (Gr=0) and one hot particle (Gr=100).…”

Section: Numerical Validationmentioning

confidence: 99%

“…[23] and Ref. [4]. Except that the fluid temperature is set to 0 and particle temperatures are set to -1, 0 and 1 respectively in the above three cases, which is based on the dimensionless criteria.…”

Section: Numerical Validationmentioning

confidence: 99%

“…Zahra Hashemi et al [4] investigated sedimenting behavior of 30 hot particles under gravity in a newtonian fluid. Hydraulic and thermal convection interactions between particles and surrounding fluid were revealed.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Size and thermal effects on sedimentation behaviors of two spheres

Yang

Chen

Xiong

et al. 2017

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

Gas-solid flows are commonly found in nature, as well as in industries. In such flows the size of the solid particles generally is not uniform. In addition, usually there is heat transfer between solid particles and gas flows. The hydrodynamics and heat transfer both make the behavior of gas-solid flows extremely complicated. In order to reveal these effects, in this paper three cases: (1) two isothermal, (2) two hot and (3) two cold spherical particles with various size ratios are investigated using lattice Boltzmann method-immersed boundary (LB-IB). It is observed that, for the first time, the tumbling duration of both two hot particles and two cold particles settling in vertical channel, is prolonged with size ratio increasing. The differences of threshold size ratio among the three cases are significant and the threshold size ratio of two hot particles is the largest one. Especially, it is found that heat transfer affects critically the interaction of two hot particles with low size ratios. In addition, against particle size ratio increasing, heat transfer effects on the interaction between two non-identical particles become weak.

show abstract

“…where fi, Ti are distribution functions for flow and temperature field respectively, and (4) ωi is weighting coefficient and for D3Q19 model is defined as…”

Section: Methodsmentioning

confidence: 99%

Section: Numerical Validationmentioning

confidence: 99%

Section: Numerical Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Size and thermal effects on sedimentation behaviors of two spheres

Yang

Chen

Xiong

et al. 2017

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

show abstract

“…The authors observed that the trailing particles in the thermal wakes of the leading particles had a higher temperature. Zahra Hashemi et al [6] simulated the sedimentation of 30 hot particles in an enclosure. The collective behavior of these hot particles was investigated.…”

Section: Introductionmentioning

confidence: 99%

Direct numerical simulations of particle sedimentation with heat transfer using the Lattice Boltzmann method

Yang

Chen

2017

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractIn most realistic gas-solid flow, the difference of particles' temperature is significant. The heat transfer induced by temperature difference between particles will influence the behavior of gas-solid flow critically. In order to deepen our insights into this important topic, in this work three typical cases: (1) double hot particles, (2) double cold particles, and (3) one hot and one cold particle, are investigated with the aid of direct numerical simulation of the Lattice Boltzmann method. A comprehensive comparison is carried out between them and some new interesting phenomena are observed. Our results show that thermal convection between particles will influence their behaviors significantly.

show abstract

Coupling immersed boundary and lattice Boltzmann method for modeling multi‐body interactions subjected to pulsatile flow

Karimnejad

Delouei

2022

Math Methods in App Sciences

View full text Add to dashboard Cite

This paper numerically investigates the effect of pulsating flow on the settling dynamics of rigid circular particles. This is an interdisciplinary subject and spans several areas ranging from mathematical and numerical modeling to fluid mechanics. For this purpose, pulsatile flow characteristics are embedded in the combination of the direct‐forcing immersed boundary method and the split‐forcing lattice Boltzmann method. Inter‐collision forces between the solid boundaries (particles and boundaries) and the added mass force due to acceleration are considered. Adequate verification tests are done to ensure the credibility of the findings. The critical parameters of pulsating flow, such as amplitude and frequency of pulsation, are investigated in detail. The paper especially puts emphasis on the interaction between particles and studies the well‐known drafting, kissing, and tumbling (DKT) phenomena. Two different scenarios are taken into account and also compared with the stationary flow. The first case is when the pulsating flow is in the direction of gravity (co‐flow), while in the latter, there is an opposing flow (counterflow). The sedimentation manners of 12 particles in a vertical channel are also presented. The findings shed light on the importance of pulsating flow and the extension of the proposed computational method for such problems. It is also revealed that pulsation and its variables can alter DKT by either postponing or speeding up the process. Also, in some cases, the cycle of DKT can be maintained incompletely, and particles would just stick together. The results can be useful for various engineering problems like filtration and particle sorting.

show abstract

Three dimensional thermal Lattice Boltzmann simulation of heating/cooling spheres falling in a Newtonian liquid

Cited by 47 publications

References 38 publications

Size and thermal effects on sedimentation behaviors of two spheres

Size and thermal effects on sedimentation behaviors of two spheres

Direct numerical simulations of particle sedimentation with heat transfer using the Lattice Boltzmann method

Coupling immersed boundary and lattice Boltzmann method for modeling multi‐body interactions subjected to pulsatile flow

Contact Info

Product

Resources

About