CAJ | 학술논문

针对旋叶汽水分离器的缩比模型展开空气-水冷态试验性能分析和数值模拟研究。试验表明：分离效率主要受水流量的影响，随水流量的增大呈逐渐上升的趋势，当水流量增大到0.3 m3/h后增加趋势逐渐减缓进而出现下降的趋势。压降对空气流量变化敏感，随空气流量的增大显著上升。进一步建立旋叶分离器C FD数值分析模型，采用欧拉两流体模型，气相为连续相，液相为离散相，并使用雷诺应力RSM方法求解湍流应力。计算分析了液滴粒径对分离特性的影响，结果表明，液滴粒径分布对分离效率有显著影响，微小粒径液滴的存在显著降低了气液分离效率。
침대선협기수분리기적축비모형전개공기-수랭태시험성능분석화수치모의연구。시험표명：분리효솔주요수수류량적영향，수수류량적증대정축점상승적추세，당수류량증대도0.3 m3/h후증가추세축점감완진이출현하강적추세。압강대공기류량변화민감，수공기류량적증대현저상승。진일보건립선협분리기C FD수치분석모형，채용구랍량류체모형，기상위련속상，액상위리산상，병사용뢰낙응력RSM방법구해단류응력。계산분석료액적립경대분리특성적영향，결과표명，액적립경분포대분리효솔유현저영향，미소립경액적적존재현저강저료기액분리효솔。
The small scale swirl-vane steam separator was built and studied by experi-mental and numerical methods using air-water modeling fluid .The experimental results show that the separation efficiency is mainly influenced by water flow rate .It increases gradually with water flow rate .The increase tendency declines when the water flow rate is larger than 0.3 m3/h ,and furthermore it decreases .The pressure drop is sensitive to air flow rate and increases markedly with air flow rate .The numerical analysis model was established for swirl-vane steam separator using Euler two-fluid model .The gas was defined as continuous fluid while water was defined as dispersed fluid ,and Reynolds stress model (RSM ) was used to solve the turbulent stress .The impact of droplet size on the separation characteristics was analyzed in this simulation .The simulation results show that the droplet size distribution has a marked influence on the separation efficien-cy ,and the existences of the micro water particles cause the marked reduction of the separation efficiency of swirl-vane steam separator .