CAJ | 학술논문

借助ANSYS FLUENT软件，使用Realizable k‐ε湍流模型对U型布置的动量恢复型并联管组模型进行数值计算，并从联箱内压力变化的角度分析推导得出最佳联箱截面比（OARH）的计算公式。结果表明，分配联箱和汇流联箱截面比对并联管组流量分配有很大影响，使用数值计算和分析方法得出的OARH均在0.6左右。本文提出的联箱尺寸匹配方法可增强并联管组换热器流量分配均匀性，并为换热器的联箱设计提供理论指导。
차조ANSYS FLUENT연건，사용Realizable k‐ε단류모형대U형포치적동량회복형병련관조모형진행수치계산，병종련상내압력변화적각도분석추도득출최가련상절면비（OARH）적계산공식。결과표명，분배련상화회류련상절면비대병련관조류량분배유흔대영향，사용수치계산화분석방법득출적OARH균재0.6좌우。본문제출적련상척촌필배방법가증강병련관조환열기류량분배균균성，병위환열기적련상설계제공이론지도。
T he numerical simulation to U‐type momentum regaining parallel manifold was completed with Realizable k‐εmodel by means of the ANSYS FLUENT software . An analytic method for the optimal cross section area ratio of the header (OARH) was obtained on the basis of the pressure change within the headers .The results show that the cross section area ratio of the dividing header to the combining header has a large effect on the flow distribution in the manifold ,and the OARH obtained by both numeri‐cal simulation and analytic method is about 0.6 . The method to match header can enhance the flow distribution uniformity in the parallel manifold of heat exchanger ,and offer a guide for the design of the manifold of heat exchanger .