基于CFD的仿生水滴型双层微通道强化传热性能研究  

Research on Enhanced Heat Transfer Performance of Biomimetic Droplet-shaped Double-layer Microchannels based on CFD

作　　者：胡明哲 云和明[1] 刘文竹 王宝雪 HU Ming-zhe;YUN He-ming;LIU Wen-zhu;WANG Bao-xue(School of Thermal Energy Engineering,Shandong Jianzhu University,Jinan 250101,China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101

出　　处：《节能技术》2025年第1期22-29,共8页Energy Conservation Technology

基　　金：山东省研究生质量提升计划项目(SDYAL21159);山东建筑大学研究生质量提升项目(YZKC202213)。

摘　　要：随着科技的发展,微通道强化换热技术从单层微通道演变为双层微通道。本文使用CFD数值模拟技术,构建双层矩形无肋、上层矩形、下层水滴结构的双层微通道,通过比较不同结构下的换热量Q、努塞尔数Nu、换热系数h、加热面平均温度T_(ave)、达西阻力数f及等泵功综合换热因子PEC,结合场协同与火积耗散理论进行综合分析。结果表明内部添加水滴型肋片有助于强化换热,其中水滴型肋片为水滴居中型的双层微通道具有最佳的综合强化换热能力,传热效率最高。With the development of technology,the microchannel enhanced heat transfer technology evolved from single-layer microchannels to double-layer microchannels.In this paper,we use CFD numerical simulation to construct a double-layer microchannel with double-layer rectangular unribbed,upper rectangular,and lower water droplet structures,by comparing the heat transfer capacity Q,Nussel number Nu,heat transfer coefficient h,mean temperature of the heating surface T_(ave),Darcy resistance number f,and the combined enhanced heat transfer factor PEC at equal pump power for different configurations,and combined with the field synergy principle and entransy dissipation theory.The results show that the internal addition of water droplet-type ribs can help to strengthen the heat transfer,in which the water droplet-type ribs for the water droplet centered in the middle of the double-layer micro-channel has the best integrated strengthen the heat transfer ability,the highest heat transfer efficiency.

关 键 词：场协同原理 双层微通道 强化传热 数值模拟 火积耗散理论 

分 类 号：TK124[动力工程及工程热物理—工程热物理]