科技创新导报
科技創新導報
과기창신도보
SCIENCE AND TECHNOLOGY CONSULTING HERALD
2014年
27期
25-28
,共4页
板翅式%多孔介质%气流分布
闆翅式%多孔介質%氣流分佈
판시식%다공개질%기류분포
Plate-fin%Porous media%Flow distribution
为了研究板翅式换热器芯体内的气流分布情况，对板翅式换热器封头和芯体整体进行建模，并分别采用多孔跳跃模型、多孔区域模型和多通道多孔区域模型等三种模型对换热器芯体进行简化处理，对比分析了各种模型的优劣。结果表明，多通道多孔区域模型最符合实际运行情况，并基于此模型计算分析了芯体高度对换热器气流分布的影响。
為瞭研究闆翅式換熱器芯體內的氣流分佈情況，對闆翅式換熱器封頭和芯體整體進行建模，併分彆採用多孔跳躍模型、多孔區域模型和多通道多孔區域模型等三種模型對換熱器芯體進行簡化處理，對比分析瞭各種模型的優劣。結果錶明，多通道多孔區域模型最符閤實際運行情況，併基于此模型計算分析瞭芯體高度對換熱器氣流分佈的影響。
위료연구판시식환열기심체내적기류분포정황，대판시식환열기봉두화심체정체진행건모，병분별채용다공도약모형、다공구역모형화다통도다공구역모형등삼충모형대환열기심체진행간화처리，대비분석료각충모형적우렬。결과표명，다통도다공구역모형최부합실제운행정황，병기우차모형계산분석료심체고도대환열기기류분포적영향。
To investigate the flow distribution in the core of plate-fin heat exchanger,the method of computational fluid dynamics is used to build the whole model of head and core in the numerical calculation.In the calculation three models are respectively used to simplify the heat exchanger core body,such as porous jump model, porous zone model and multichannel porous zone model. The results showed that the multichannel porous zone model is most conforms to the actual operation situation, and based on this model the effect of the core body height to flow distribution is calculated.
