探讨模拟射流雾化的若干典型VOF(Volume of Fluid)界面重构方法,并在开源流体力学计算软件OpenFOAM中运用VOF-LPT(Lagrangian Particle Tracking)耦合算法;该算法兼顾模拟的准确性和计算效率,可较为准确地模拟从连续液体到离散小液滴的...探讨模拟射流雾化的若干典型VOF(Volume of Fluid)界面重构方法,并在开源流体力学计算软件OpenFOAM中运用VOF-LPT(Lagrangian Particle Tracking)耦合算法;该算法兼顾模拟的准确性和计算效率,可较为准确地模拟从连续液体到离散小液滴的射流雾化过程,并为更大尺度的模拟提供了一种可行的高效模拟方案。展开更多
Impinging-jet injectors are widely used in liquid propulsion applications, since their simple configuration provides reliable and efficient atomization. The flowfield involves a series of complicated spatio-temporal e...Impinging-jet injectors are widely used in liquid propulsion applications, since their simple configuration provides reliable and efficient atomization. The flowfield involves a series of complicated spatio-temporal evolutions. Much effort has been directed toward understanding the underlying physics and developing quantitative predictions of impinging-jet atomization. This paper summarizes the recent advances in this direction, including state-of-the-art theoretical, experimental, and numerical studies, along with representative results. Finally, concluding remarks address remaining challenges and highlight modeling capabilities of high-fidelity simulations.展开更多
Based on flow analysis of jet exhausting atomization nozzle,a simplification model and calculating method are put forward to determine flow rate coefficient for jet exhausting atomization nozzle.The method considers t...Based on flow analysis of jet exhausting atomization nozzle,a simplification model and calculating method are put forward to determine flow rate coefficient for jet exhausting atomization nozzle.The method considers the structure of nozzle,properties of fluid and flow state,it overcomes the shortcomings of selecting experimential values.The calculation agrees with the experiment results basically,and calculating errors are all under 3 percent.Therefore the method has wide application.展开更多
文摘探讨模拟射流雾化的若干典型VOF(Volume of Fluid)界面重构方法,并在开源流体力学计算软件OpenFOAM中运用VOF-LPT(Lagrangian Particle Tracking)耦合算法;该算法兼顾模拟的准确性和计算效率,可较为准确地模拟从连续液体到离散小液滴的射流雾化过程,并为更大尺度的模拟提供了一种可行的高效模拟方案。
基金sponsored partly by the National Natural Science Foundation of China (Nos. 11772343 and 11402274)partly by the Beijing Institute of Technology Research Fund Program for Young Scholars
文摘Impinging-jet injectors are widely used in liquid propulsion applications, since their simple configuration provides reliable and efficient atomization. The flowfield involves a series of complicated spatio-temporal evolutions. Much effort has been directed toward understanding the underlying physics and developing quantitative predictions of impinging-jet atomization. This paper summarizes the recent advances in this direction, including state-of-the-art theoretical, experimental, and numerical studies, along with representative results. Finally, concluding remarks address remaining challenges and highlight modeling capabilities of high-fidelity simulations.
文摘Based on flow analysis of jet exhausting atomization nozzle,a simplification model and calculating method are put forward to determine flow rate coefficient for jet exhausting atomization nozzle.The method considers the structure of nozzle,properties of fluid and flow state,it overcomes the shortcomings of selecting experimential values.The calculation agrees with the experiment results basically,and calculating errors are all under 3 percent.Therefore the method has wide application.
