CAJ | 학술논문

利用流体力学计算软件FLUENT对水蒸汽喷射泵的工作性能进行数值模拟，通过合理的模型假设与简化，对计算模型进行网格划分与求解，从而得到水蒸汽喷射泵的内部流体流动形态和引射系数。保持工作参数和其它几何参数不变，仅改变喷嘴距的大小，模拟计算出水蒸汽喷射泵在不同喷嘴距下的引射系数，根据引射系数和内部流场的变化情况，分析其影响规律，从而找出较好的喷嘴距取值范围。
이용류체역학계산연건FLUENT대수증기분사빙적공작성능진행수치모의，통과합리적모형가설여간화，대계산모형진행망격화분여구해，종이득도수증기분사빙적내부류체류동형태화인사계수。보지공작삼수화기타궤하삼수불변，부개변분취거적대소，모의계산출수증기분사빙재불동분취거하적인사계수，근거인사계수화내부류장적변화정황，분석기영향규률，종이조출교호적분취거취치범위。
In this paper, a numerical simulation on the performance of steam ejector pump is made by fluid dynamics software FLU-ENT. Through reasonable assumptions and model simplification, the calculation model is meshed and solved. The inside fluid flow pat-tern of steam ejector pump is obtained and the entrainment ratio is calculated. Maintaining the operating parameters and other geomet-rical parameters constant, it calculates the entrainment ratio of all steam ejector pumps in different distances only by changing the dis-tance between nozzles. According to the changes of entrainment ratio and inside fluid flow pattern, it analyzes the impact of the nozzle distance and finds out a better range of the nozzle distance.