CAJ | 학술논문

为准确模拟出电池包内部流场结构与温度分布，探索工程上应用广泛的k-模型的湍流适应性，采用简化的锂离子电池包，并为其建立了叠压与管束排列离散模型，分别运用3种k-湍流模型进行数值仿真，得到不同排列方式下的流场和温度场。结果分析表明：RNG k-模型对于小尺度、大曲率衍生涡的模拟有较大优势，但涡的形状、大小相比于Standard及Realizable k-模型明显不同，Standard k-模型能更好地揭示冲击性回流对后排电池温度的影响；管束排列下，电池包的温度分布均匀性更好，散热性能更优。
위준학모의출전지포내부류장결구여온도분포，탐색공정상응용엄범적k-모형적단류괄응성，채용간화적리리자전지포，병위기건립료첩압여관속배렬리산모형，분별운용3충k-단류모형진행수치방진，득도불동배렬방식하적류장화온도장。결과분석표명：RNG k-모형대우소척도、대곡솔연생와적모의유교대우세，단와적형상、대소상비우Standard급Realizable k-모형명현불동，Standard k-모형능경호지게시충격성회류대후배전지온도적영향；관속배렬하，전지포적온도분포균균성경호，산열성능경우。
In order to simulate the flow structure and temperature distribution in battery pack and explore the turbu-lence adaptability ofk- model widely used in engineering, applied a simplified lithium-ion battery package and established the overlapping and tube bundle arrangement discrete model for the research. Made numerical simulation with 3 kinds ofk- turbulence models and obtained the flow field and temperature field under different arrangements. The analysis results show that RNGk- model has great advantages for the simulation of small scale and large curvature derivative vortex, and the shape and the size of the vortex is very different from Standard and Realizablek- models. Standardk- model can better reveal the impact of reflux effect on the rear of the cell temperature. Under the tube bundle arrangement, the battery pack has better temperature distribution uniformity and more excellent heat dissipation performance.