Method and device for calculating electron energy level distribution of gas molecules

Abstract

The invention provides a method and a device for calculating electron energy level distribution of gas molecules. The method comprises the following steps: determining macroscopic parameters of target gas molecules in a one-dimensional flow field; the macroscopic parameters comprise the number density of target gas molecules of each node in the one-dimensional flow field; according to the number density of the target gas molecules, calculating the number density of all electron energy levels of the target gas molecules at an initial node in the one-dimensional flow field by using a Boltzmann distribution formula; determining the number density of all electron energy levels of a next node of the initial node according to the number density of all electron energy levels of the initial node, the convection term of the initial node and the excitation term of the initial node; and taking the next node of the initial node as a new initial node until the electron energy level distribution of the target gas molecules in the one-dimensional flow field is obtained. According to the scheme, the calculation amount can be reduced, and the calculation precision of the electron energy level distribution of the gas molecules in the thermodynamic unbalanced hypersonic flow field can be ensured.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electronic energy level distribution, and in particular to a calculation method and device for electronic energy level distribution of gas molecules. Background technique [0002] When the flight altitude is high (generally greater than 30km) and the flight speed is relatively high (generally greater than 6Ma), the flow field formed around the aircraft will be in a thermodynamic non-equilibrium state. The so-called thermodynamic non-equilibrium state means that when the flow field pressure is low and the flow rate is fast, the gas molecules in the flow field do not have sufficient collisions, resulting in insufficient exchange of vibration and electronic energy of these molecules, resulting in molecular energy in the flow field. The distribution of the stages does not reach the local thermodynamic equilibrium state, that is, it does not reach the Boltzmann distribution. However, the...

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Problems solved by technology

[0004] Based on the existing calculation methods for the electronic energy level distribution of gas molecules in a thermodynamic non-equilibrium hypersonic flow field, the calculation accuracy of the multi-temperature method is low, the scope of application of the quasi-steady-state method is limited, and the calculation amount of the state-state method is large. The embodiment of the present invention Provided is a calculation method and device for electronic energy level distribution, which can greatly reduce the amount of calculation while ensuring the calculation accuracy of electronic energy level distribution of gas molecules in a thermodynamic non-equilibrium hypersonic flow field

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