CAJ | 학술논문

利用计算流体力学技术模拟和分析了卷式膜组器中的隔网结构对流体流动的影响并对优化设计提出了一些建议.基于周期性边界条件在平板隔网中划分了一定类型的可重复单元作为计算模型并进行了计算.膜壁上的剪切力、压降和特征面上的流速分布这三方面的因素被用来衡量不同模型的计算结果,并由此分析,比较了模型的优劣.分析研究了现有隔网丝配制中流体流速、流道膨胀和上下层丝相对尺寸对流体流动的影响.此外,还基于该分析的结果对粗丝占满流道的模型进行了模拟改进并提出相应的优化建议.
이용계산류체역학기술모의화분석료권식막조기중적격망결구대류체류동적영향병대우화설계제출료일사건의.기우주기성변계조건재평판격망중화분료일정류형적가중복단원작위계산모형병진행료계산.막벽상적전절력、압강화특정면상적류속분포저삼방면적인소피용래형량불동모형적계산결과,병유차분석,비교료모형적우렬.분석연구료현유격망사배제중류체류속、류도팽창화상하층사상대척촌대류체류동적영향.차외,환기우해분석적결과대조사점만류도적모형진행료모의개진병제출상응적우화건의.
A computational fluid dynamics technique has been introduced to simulate and study effects on fluid flow caused by membrane spacers in Spiral Wound Module.The simulation is based on a kind of periodic unit in the spacer and the periodic condition is applied in the computation.Shear stresses on the membrane surface,pressure drop and velocity contours on some specific planes are used to evaluate the performance of the membrane unit.This study has presented analysis to a kind of widely used spacer structure on the variation of flow velocity,relative size of the two layers of filaments and the expansion of the channel.Moreover,another kind of spacer is analyzed and some modification is made with some optimization conditions given.