helical flow meaning in Chinese
螺线流
螺旋流
Examples
- In sum , in the case of laminar flow , the outside helical flow would have a little influence on mf of purity water
总之，在层流条件下，对于纯净水的微滤，外旋流的方式对微滤通量的影响并不显著。 - The key problems for mf are concentration polarization and membrane fouling . mf assembly with outside helical flow is a new kind of equipment which can enhance permeate flux by means of the operating principle of a hydrocyclone . and up to now many researches of it has been mainly done experimentally
外旋流式膜器巧妙地将水力旋流器的原理与管式膜器微滤相结合，是一种新的强化微滤的膜器结构，目前对其膜器环隙内的流场分布及分离性能研究均处于起步阶段，且都以实验研究为主。 - But for real microfiltration , the distribution of shear stress on the membrane of the module with outside helical flow would have benefit to make smaller number of particles deposit on the membrane . ( 2 ) by means of orthogonal test and regression method , four new models , trans - membrane pressure model , flux model , trans - module pressure drop model , and efficiency model , were established , which roundly describe the performance of outside helical mf by depicting the flux , energy loss , and handling capacity simultaneously
( 2 )采用正交回归实验，在无颗粒沉积的理想情况下，建立基于层流数值解的膜器跨膜压力损失模型、过滤通量模型、过膜器的压力损失模型和膜器过滤效率模型，首次从通量、能量损失及膜器对料液的处理能力等三个方面，更全面地对外旋流方式下的微滤过程进行了描述。 - ( 3 ) under the ideal conditions of no particle deposition , the complex effects of flow parameters and geometry on performance of microfiltration with outside helical flow were discussed . and it is suggested that when designing , several factors should be taken into account comprehensively . it is noted that increasing mf capability will , at the same time , increase the energy loss of the module
( 3 )综合分析了在无颗粒沉积的理想情况下，流动参数、结构参数对微滤效果的影响情况，发现各参数对微滤效果的影响复杂，在膜器优化设计时必须综合考虑各因素而适当选取，且微滤效果的提高是以过膜器压力损失的增大为代价的，从而从理论上对实际微滤过程中观察到的通量随操作压力的增大而增大的现象做出了解释。 - ( 4 ) the conditions of no particle deposition or making deposited particles move along the membrane surface were determined with the help of the analysis of forces acting on particles , from which , it may be considered that in the helical flow these conditions would be easier to reach than in the axial flow . when these conditions be satisfied in the whole region , there would be no or only a dynamic cake on the membrane surface . in addition , to ensure a long time steady microfiltration , sometimes over - high flux should be avoided
( 4 )通过颗粒受力分析，推导出外旋流方式下颗粒不沉积膜面的条件和已沉积颗粒沿膜面滚动的条件，认为从减小颗粒的沉积到促使已沉积颗粒沿膜面的滚动等方面，外旋流方式相对外轴向流较容易实现，当膜面上所有点上都满足上述条件时，在膜面上将无滤饼或形成一阻力较小的动态滤饼层。