Lattice Boltzmann method for heat transfer in phase change materials: a review

Kumar, Sudhanshu; Panda, Debabrata; Ghodke, Praveen Kumar; Gangawane, Krunal M.

doi:10.1007/s10973-023-12014-6

Cited by 6 publications

(4 citation statements)

References 162 publications

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“…The lattice Boltzmann method (LBM) has emerged as a versatile and powerful numerical technique for simulating complex fluid flow and heat transfer phenomena, making it a valuable tool in studying phase change material (PCM) melting and their interactions with various factors [27]. The LBM has distinct advantages when it comes to capturing intricate fluid-solid phase transitions, and it is well suited to dealing with complex geometries [28] and boundary conditions [29]. This method allows for a thorough examination of the dynamic interactions between fluid flow, heat transfer, and phase change phenomena in PCM systems.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Heat Storage Cooling Systems via the Implementation of Honeycomb-Inspired Design: Investigating Efficiency and Performance

Rahmani,

Dibaj,

Akrami

2024

Energies

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This study presents a novel approach inspired by the hexagonal honeycomb structure found in nature, leveraging image processing algorithms to precisely define complex geometries in thermal systems. Hexagonal phase change material containers and thermally conductive fins were meticulously delineated, mirroring the intricate real-world designs of honeycombs. This innovative methodology not only streamlines setup processes but also enhances our understanding of melting dynamics within enclosures, highlighting the potential benefits of biomimetic design principles in engineering applications. Two distinct honeycomb structures were employed to investigate their impact on the melting process within cavities subject to heating from the left wall, with the remaining walls treated as adiabatic surfaces. The incorporation of a thermally conductive fin system within the enclosure significantly reduced the time required for a complete phase change, emphasizing the profound influence of fin systems on thermal design and performance. This enhancement in heat transfer dynamics makes fin systems advantageous for applications prioritizing precise temperature control and expedited phase change processes. Furthermore, the critical role of the fin system design was emphasized, influencing both the onset and location of the final point of melting. This underscores the importance of tailoring fin systems to specific applications to optimize their performance. Our study highlights the significant impact of the Rayleigh (Ra) number on the melting time in a cavity without fins, revealing a decrease from 6 to 0.4 as the Ra increased from 102 to 105; the introduction of a fin system uniformly reduced the melting time to Ste.Fo = 0.5, indicating fins’ universal effectiveness in optimizing thermal dynamics and expediting the melting process. Moreover, the cavity angle was found to significantly affect the fluid fraction diagram in unfanned cavities but had minimal impact when fins were present, highlighting the stabilizing role of fins in mitigating gravitational effects during melting processes. These insights expand our understanding of cavity geometry and fin interactions in heat transfer, offering potential for enhanced thermal system designs in various engineering applications. Decreasing thermal conductivity (λ) by increasing the fin thickness can halve the melting time, but the accompanying disadvantages include a heavier system and reduced energy storage due to less phase change material, necessitating a careful balance in decision-making.

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Section: Introductionmentioning

confidence: 99%

Enhancing Heat Storage Cooling Systems via the Implementation of Honeycomb-Inspired Design: Investigating Efficiency and Performance

Rahmani,

Dibaj,

Akrami

2024

Energies

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“…This is due to some inherent features of LBM, such as easy parallelization of the code, simplicity of the algorithm, ability to deal with complex geometries, uncomplicated treatment of boundary conditions, less CPU time for complex problems compared with conventional numerical methods, and so on. [11][12][13][14][15] Different LBM methods are proposed to numerically investigate the melting of PCMs in LHTES systems, which can be generally classified into two groups, namely phase field and enthalpy methods. 12,13 Jourabian et al 16 used the LBM method to simulate the outward melting of ice in a cylindrical horizontal annulus.…”

Section: Introductionmentioning

confidence: 99%

“…The boundary conditions were defined to be insulated at the top and bottom walls and the left and right walls were held at a constant temperature. For a more detailed literature review on studies that employed the LBM for simulating the LHTES systems including PCM, readers are referred to a review paper recently published by Kumar et al 15 During the last two decades, the LBM has also been developed to model the radiative heat transfer in participating media, which has many engineering applications. Mishra and Lankadasu 22 and Mishra et al 23 combined the LBM with discrete ordinate and collapsed dimension methods, respectively, to study the radiation-conduction problem in a two-dimensional rectangular geometry.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lattice Boltzmann simulation of effects of realistic boundary conditions on volumetric radiation‐conduction melting of a novel cylindrical enclosure filled with phase change materials

Zameni‐Ghalati,

Mehryar,

Imani

2024

Energy Storage

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In this research, a novel solar latent heat thermal energy storage (LHTES) system, including the cylindrical enclosures filled with a phase change material (PCM), is proposed, which can be installed on the building windows to alleviate the drawbacks of traditional PCM‐filled double‐glazed windows, such as daylight hindrance and leakage. The lattice Boltzmann method (LBM) is used to simulate the volumetric radiation‐conduction melting of the PCM within a single cylinder of the proposed LHTES system with considering more realistic conditions such as convective boundary condition, shadow effect, and variable solar radiation angle compared with the available works in the literature. As such, several boundary conditions are assessed, and parameters such as cylinder diameter, extinction coefficient, scattering albedo, solar angle, shadow effect, and natural convection heat transfer coefficient are studied on the time history of the melting fraction and charging time. The results revealed that considering the applied conditions, such as convection heat loss to the environment and shadow, significantly affects the charging time of the system. It is shown that the charging time for convective boundary condition with , , and increases, respectively, by 11%, 30%, and 50% relative to a case with the insulated boundary condition without the shadow effect and 38%, 91%, and 175% compared with the insulated case with a 90° shadow.

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