CAJ | 학술논문

以型号为MY56-50的石油化工泵为研究对象，应用Fluent软件，对离心泵在输送不同密度流体介质的内部流动进行数值模拟。在动参考系坐标下，运用雷诺时均 N-S 方程离散，选用 RNG k-ε湍流模型，压力和耦合采用 SIMPLEC 算法求解。基于数值模拟结果，对这5种不同密度流体介质在工况下的全流场数值模拟结果进行计算，得出离心泵内部流场随介质的不同所表现的变化规律。同时将5种不同情况下预测的外特性结果进行对比分析，得出不同流体介质对离心泵的影响情况。研究结果表明，流体的密度不影响离心泵的性能曲线走势，只是随着密度的不同，其数值大小有所变化。
이형호위MY56-50적석유화공빙위연구대상，응용Fluent연건，대리심빙재수송불동밀도류체개질적내부류동진행수치모의。재동삼고계좌표하，운용뢰낙시균 N-S 방정리산，선용 RNG k-ε단류모형，압력화우합채용 SIMPLEC 산법구해。기우수치모의결과，대저5충불동밀도류체개질재공황하적전류장수치모의결과진행계산，득출리심빙내부류장수개질적불동소표현적변화규률。동시장5충불동정황하예측적외특성결과진행대비분석，득출불동류체개질대리심빙적영향정황。연구결과표명，류체적밀도불영향리심빙적성능곡선주세，지시수착밀도적불동，기수치대소유소변화。
MY56-50 petrochemical pump was researched by using Fluent to develop numer-ical simulation to the internal flow of centrifugal pump during its transmission of different density fluid media.Under the dynamic reference system coordinates, the Navior-Stokes (N-S )equations,RNG k-εTurb ulence Modeling,the stress and coupling were calcu-lated based on SIMPLEC algorithm.According to the numerical simulation results,all flow numerical simulation results of these five different-density fluid media were calculated under the working condition,and then determine the change rules of the internal flow of centrifu-gal pump as the media changes.And this research makes comparison of the external charac-teristics as predicted in different conditions and concludes how different flow media influ-enced the centrifugal pump.The research result shows that different-density fluid does not affect the characteristic performance.