Study on effective thermal conductivity of silicone/phosphor composite and its size effect by Lattice Boltzmann method

被引：11
|
作者：
Li, Lan [1 ]
Zheng, Huai [1 ]
Yuan, Chao [1 ]
Hu, Run [1 ]
Luo, Xiaobing [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China
来源：
HEAT AND MASS TRANSFER | 2016年 / 52卷 / 12期
基金：
美国国家科学基金会;
关键词：
Lattice Boltzmann method; Silicone/phosphor composite; Effective thermal conductivity; Size effect; CONJUGATE HEAT-TRANSFER; BOUNDARY-CONDITIONS; INTERFACE MATERIALS; POROUS MATERIALS; BGK MODEL; SIMULATIONS; RESISTANCE; PARTICLE; FLOWS;
D O I：
10.1007/s00231-016-1784-7
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The silicone/phosphor composite is widely used in light emitting diode (LED) packaging. The composite thermal properties, especially the effective thermal conductivity, strongly influence the LED performance. In this paper, a lattice Boltzmann model was presented to predict the silicone/phosphor composite effective thermal conductivity. Based on the present lattice Boltzmann model, a random generation method was established to describe the phosphor particle distribution in composite. Benchmarks were conducted by comparing the simulation results with theoretical solutions for simple cases. Then the model was applied to analyze the effective thermal conductivity of the silicone/phosphor composite and its size effect. The deviations between simulation and experimental results are < 7 %, when the phosphor volume fraction varies from 0.038 to 0.45. The simulation results also indicate that effective thermal conductivity of the composite with larger particles is higher than that with small particles at the same volume fraction. While mixing these two sizes of phosphor particles provides an extra enhancement for the effective thermal conductivity.
引用
收藏
页码：2813 / 2821
页数：9
相关论文
共 50 条
  • [1] Study on effective thermal conductivity of silicone/phosphor composite and its size effect by Lattice Boltzmann method
    Lan Li
    Huai Zheng
    Chao Yuan
    Run Hu
    Xiaobing Luo
    Heat and Mass Transfer, 2016, 52 : 2813 - 2821
  • [2] Effective thermal conductivity of silicone/phosphor composites
    Zhang, Qin
    Pi, Zhihua
    Chen, Mingxiang
    Luo, Xiaobing
    Xu, Ling
    Liu, Sheng
    JOURNAL OF COMPOSITE MATERIALS, 2011, 45 (23) : 2465 - 2473
  • [3] Optimum convergence parameters of lattice Boltzmann method for predicting effective thermal conductivity
    Yang, Mingshan
    Li, Xiangyu
    COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 2022, 394
  • [4] Lattice Boltzmann modeling of the effective thermal conductivity for fibrous materials
    Wang, Moran
    He, Jihuan
    Yu, Jianyong
    Pan, Ning
    INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2007, 46 (09) : 848 - 855
  • [5] Numerical simulation of nanoparticles size/aspect ratio effect on thermal conductivity of nanofluids using lattice Boltzmann method
    Tahmooressi, Hamed
    Kasaeian, Alibakhsh
    Yavarinasab, Adel
    Tarokh, Ali
    Ghazi, Mahan
    Hoorfar, Mina
    INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2021, 120 (120)
  • [6] Study on the effect of the phosphor distribution on the phosphor layer temperature in light emitting diodes by lattice Boltzmann method
    Li, Lan
    Yuan, Chao
    Hu, Run
    Zheng, Huai
    Luo, Xiaobing
    2014 15TH INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY (ICEPT), 2014, : 671 - 675
  • [7] Numerical prediction of effective thermal conductivity of ceramic fiber board using lattice Boltzmann method
    Hussain, Mazhar
    Tao, Wen-Quan
    NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2018, 74 (06) : 1285 - 1300
  • [8] Approach for predicting effective thermal conductivity of aerogel materials through a modified lattice Boltzmann method
    Qu, Z. G.
    Fu, Y. D.
    Liu, Y.
    Zhou, L.
    APPLIED THERMAL ENGINEERING, 2018, 132 : 730 - 739
  • [9] Effective thermal conductivity in granular media with devolatilization: the Lattice Boltzmann modelling
    Grucelski, Arkadiusz
    INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY, 2021, 8 (04) : 590 - 604
  • [10] LATTICE BOLTZMANN SIMULATION OF EFFECTIVE THERMAL CONDUCTIVITY OF POROUS MEDIA WITH MULTIPHASE
    Wang, Dongdong
    Liu, Zhichun
    Shen, Jun
    Liu, Wei
    JOURNAL OF POROUS MEDIA, 2015, 18 (10) : 929 - 939
12345