流体机械
流體機械
류체궤계
FLUID MACHINERY
2014年
4期
11-16,5
,共7页
旋风分离器%数值模拟%短路流量%RSM%流场
鏇風分離器%數值模擬%短路流量%RSM%流場
선풍분리기%수치모의%단로류량%RSM%류장
cyclone separator%numerical simulation%RSM%short-circuit flow rate%flow field
为了揭示径向喷射规整旋流器（RJC）的高效分离机理，在非稳态下采用雷诺应力模型（RSM）对其内部气相流场进行了数值模拟。与Stairmand型旋风分离器（SC）对比发现，RJC的流场更具有轴对称性，切向速度值更大，短路流量更小，更有利于细小颗粒的分离，但是RJC的压降较大。对比“圆柱”型内筒和“圆锥”型内筒2种情况下RJC的短路流量发现，内筒为“圆锥”时，RJC的短路流量更小。
為瞭揭示徑嚮噴射規整鏇流器（RJC）的高效分離機理，在非穩態下採用雷諾應力模型（RSM）對其內部氣相流場進行瞭數值模擬。與Stairmand型鏇風分離器（SC）對比髮現，RJC的流場更具有軸對稱性，切嚮速度值更大，短路流量更小，更有利于細小顆粒的分離，但是RJC的壓降較大。對比“圓柱”型內筒和“圓錐”型內筒2種情況下RJC的短路流量髮現，內筒為“圓錐”時，RJC的短路流量更小。
위료게시경향분사규정선류기（RJC）적고효분리궤리，재비은태하채용뢰낙응력모형（RSM）대기내부기상류장진행료수치모의。여Stairmand형선풍분리기（SC）대비발현，RJC적류장경구유축대칭성，절향속도치경대，단로류량경소，경유리우세소과립적분리，단시RJC적압강교대。대비“원주”형내통화“원추”형내통2충정황하RJC적단로류량발현，내통위“원추”시，RJC적단로류량경소。
To reveal the efficient separation mechanism of Radial Jet Cyclone (RJC),numerical simulation and calculation were performed on the flow field in unsteady state using Reynolds stress model.Compared to the Stairmand Cyclone (SC),the flow field in RJC has a more axisymmetric structure,a larger tangential velocity and smaller short-circuit flow rate which ensures better sepa-ration performance for fine particles,but the pressure drop is higher.Moreover,the short-circuit flow rate of a RJC with a cone shape inner-shell is smaller than that with a cylinder shape inner-shell.
