Simulation calculation method for internal ballistic performance of liquid water column impacted by fuel gas jet flow

Abstract

The invention discloses a simulation calculation method for internal ballistic performance of a liquid water column impacted by fuel gas jet flow. The method comprises the following steps: presettingsimulation calculation model preconditions; establishing a gas-liquid physical action process model based on the preconditions in the step S1; dividing the whole internal ballistic process into four simulation calculation stages based on the gas-liquid physical action process model, wherein the four simulation calculation stages are respectively a fuel gas generation flow calculation stage, a fuelgas flowing-into-cylindrical-tube state calculation stage, a cylindrical-tube inner liquid column motion calculation stage and a high-low pressure chamber pressure calculation stage; and obtaining ahigh-low pressure chamber pressure curve. According to the method, the internal ballistic performance parameters and thrust characteristics of the liquid column balance body phenomenon in the fuel gasjet impact pipe can be obtained simply and efficiently, and the method has important significance in researching the optimal design of system structures such as industrial products and military equipment with the liquid column balance body phenomenon in the fuel gas jet impact pipe.

Description

Technical field [0001] The invention relates to the industrial production and military fields, in particular to a simulation calculation method for the ballistic performance of a gas jet impinging on a liquid water column. Background technique [0002] The theoretical research and test system of the gas jet impacting the liquid column balance body includes the ignition system, the gas generating system, the nozzle, and the cylindrical tube. The injection process starts from the ignition of the ignition powder, and the gas and liquid are all from the cylindrical tube. After the medium spray, the pressure in the combustion chamber drops to atmospheric pressure as the end point. During the period, the ignition powder is ignited, the propellant is burned, the nozzle is broken, the gunpowder gas flows, and the liquid column is impacted. Commonly ejected from the cylindrical tube and other complicated and changing processes. [0003] Generally, although certain interior ballistic parame...

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Problems solved by technology

[0003] Generally, although some internal ballistic parameters can be accurately obtained through experimental research, it still takes a lot of time and energy, and as the professional quality of the experimenters is unstable, it will bring uncertainty errors to the experimental data

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