| 正交各向异性相变材料的无网格法传热模型及应用 |
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| 引用本文： | 张建平,胡慧瑶,吴淑英,刘庭显,王志奇,黄健. 正交各向异性相变材料的无网格法传热模型及应用[J]. 太阳能学报, 2022, 43(3): 242-250. DOI: 10.19912/j.0254-0096.tynxb.2020-0671 |
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| 作者姓名： | 张建平 胡慧瑶 吴淑英 刘庭显 王志奇 黄健 |
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| 作者单位： | 湘潭大学机械工程学院,湘潭 411105 |
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| 基金项目： | 国家自然科学基金（51975503;51405415;51206071）；;湖南省自然科学基金（2020JJ4582）； |
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| 摘 要： | 利用无网格迦辽金(EFG)法建立正交各向异性相变材料的传热计算模型,基于该模型编程完成各向异性材料太阳能相变蓄热水箱和管壳式相变蓄热单元的相变传热分析,并探讨热导率因子和材料方向角对复合材料相变传热特性的影响.研究表明:在相同节点布置下EFG法的温度场和相界面计算精度均高于有限元法,EFG法在动态相界面追踪方面具有明显...
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| 关 键 词： | 太阳能 相变材料 蓄热装置 传热分析 无网格迦辽金法 |
| 收稿时间： | 2020-07-15 |
MESHLESS HEAT TRANSFER ANALYSIS MODEL OF ORTHOTROPIC PHASE CHANGE MATERIALS AND ITS APPLICATION |
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| Zhang Jianping,Hu Huiyao,Wu Shuying,Liu Tingxian,Wang Zhiqi,Huang Jian. MESHLESS HEAT TRANSFER ANALYSIS MODEL OF ORTHOTROPIC PHASE CHANGE MATERIALS AND ITS APPLICATION[J]. Acta Energiae Solaris Sinica, 2022, 43(3): 242-250. DOI: 10.19912/j.0254-0096.tynxb.2020-0671 |
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| Authors: | Zhang Jianping Hu Huiyao Wu Shuying Liu Tingxian Wang Zhiqi Huang Jian |
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| Affiliation: | School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China |
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| Abstract: | A calculation model for heat transfer analysis of orthotropic phase change materials is established using Element-free Galerkin （EFG） method. Based on the proposed model, the phase change heat transfer analysis of solar thermal storage water tank and shell and tube latent heat storage unit with orthotropic phase change materials are completed by the developed programs, and the effects of thermal conductivity factor and material off-angle on the phase change heat transfer characteristic of composite are explored. The research indicates that the calculation accuracy of EFG temperature field and phase interfaces is higher than the finite element method under the same node arrangement, and EFG method has obvious advantages in the dynamic phase interfaces tracking. The increase of thermal conductivity factor and decrease of material off-angle can enhance the heat transfer performance, accelerate the phase change process of composite phase change materials and improve the thermal storage / release efficiency of phase change solar energy storage device effectively. The reasonable values of thermal conductivity factor and material off-angle are 4-6 and 0°-15° for solar thermal storage water tank and shell and tube latent heat storage unit with orthotropic phase change materials, respectively. |
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| Keywords: | solar energy phase change materials thermal storage devices heat transfer analysis element-free Galerkin method |
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