CAJ | 학술논문

本文在现有引射比计算模型的基础上，建立了一个针对单相 R744喷射器系统的混合模型。首先通过流体力学和传热学基本原理得到引射比的理论方程，然后在充分考虑喷射器入口和出口流体状态的基础上，对该方程进行简化后得到一个新的计算模型。该模型具备五个待定参数，文中也给出了待定参数的拟合方法。计算结果与实验结果的对比表明该新模型具有较高的精度。
본문재현유인사비계산모형적기출상，건립료일개침대단상 R744분사기계통적혼합모형。수선통과류체역학화전열학기본원리득도인사비적이론방정，연후재충분고필분사기입구화출구류체상태적기출상，대해방정진행간화후득도일개신적계산모형。해모형구비오개대정삼수，문중야급출료대정삼수적의합방법。계산결과여실험결과적대비표명해신모형구유교고적정도。
Based on the existing mathematical model of mass entrainment ratio, a hybrid model for single phase R744 ejector system was developed. Firstly, based on the fluid dynamics and heat transfer theory, a theoretical model of mass entrainment ratio was established, and then it was simplified by considering the fluid status at the ejector inlet and outlet. The obtained new mathematical model contains five unknown parameters, and the fitting method for the parameters is also given. The comparisons of the calculation and experimental results indicate that the new model has a higher accuracy.