CAJ | 학술논문

为了研究离心泵气液两相流对于该泵扬程和效率的的影响,首先采用CFD中的Fluent6.3进行单相流数值模拟与试验结果对比,说明了数值模拟的可靠性;然后采用Mixture模型计算出在设计工况下,不同气相浓度、不同气相颗粒直径在内部流场的液相分布情况,模拟结果表明：增大气相浓浓度和气相颗粒直径都会导致扬程、效率下降,且增大气相浓度对扬程、效率的下降特别显著;
위료연구리심빙기액량상류대우해빙양정화효솔적적영향,수선채용CFD중적Fluent6.3진행단상류수치모의여시험결과대비,설명료수치모의적가고성;연후채용Mixture모형계산출재설계공황하,불동기상농도、불동기상과립직경재내부류장적액상분포정황,모의결과표명：증대기상농농도화기상과립직경도회도치양정、효솔하강,차증대기상농도대양정、효솔적하강특별현저;
In order to further study the gas-liquid two-phase flow mechanism influent with the head and efficiency in centrifugal pump.Firstly compared three dimensional simulation was performed for one-phase with the test.The results showed that simulation is very reliable. Secondly with Mixture model simulated the distribution of gas particle of different particle size and different volume fraction at design operation flow,and the head of pump was also calculated.The result indicated that the volume fraction and the diameter of the gas had an effect in particle distribution,besides the increase the diameter of gas influent more serious than the volume fraction.