Diesel spray combustion simulation method based on multi-component decoupling physical and chemical substitutes

The invention discloses a diesel oil spray combustion simulation method based on multi-component decoupling physical and chemical substitutes. The method is used for simulating spray combustion characteristics of -50 # diesel oil in alpine regions. The method comprises the following steps: selecting a physical substitute to characterize the physical characteristics of the -50 # diesel oil, and selecting a chemical substitute to characterize the chemical characteristics of the -50 # diesel oil; when diesel oil is in a liquid state during diesel oil spray combustion simulation, selecting the physical substitute as a diesel oil substitute; and when the diesel oil is evaporated from a liquid state to a gaseous state, selecting the chemical substitute as a diesel oil substitute to replace the physical substitute. According to the invention, spraying and combustion characteristics of actual diesel oil can be well reproduced at the same time. 本发明公开了一种基于多组分解耦物理化学替代物的柴油喷雾燃烧仿真方法，用于对-50#柴油在高寒地区的喷雾燃烧特性进行仿真；该方法包括：选取物理替代物表