Flow Field and Effects of SF6 Released in Ionosphere
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摘要: 在电离层中释放六氟化硫时，释放初期的六氟化硫流速及流量等条件是影响释放效应仿真的重要因素，对仿真结果的准确性具有一定的影响.传统的六氟化硫释放引起的电离层效应仿真中并未讨论.基于Fluent流场仿真软件，针对不同释放初始条件并结合六氟化硫容器的结构，对六氟化硫释放过程中温度、压强以及喷口流速、流量等参数变化情况进行仿真计算，得到了以上参量在释放过程中的变化情况，并将其作为电离层化学物质释放三维动力学模型的初始参数，获得了更加精确的六氟化硫电离层释放效应仿真结果.Abstract: The initial velocity and mass flow rate of sulfur hexafluoride (SF6) released in the ionosphere are key factors for the release effects research. They are not involved in traditional simulation models. In order to realize high precision simulation, the flow field in the storage vessel during SF6 release is studied. According to the structural size of the SF6 storage vessel, the geometric model is established, and the grid model uses structured grid and unstructured grid to discretize the computational area of the geometric model. Using the standard k-ε model and SIMPLE algorithm in the professional software Fluent, the temperature, pressure, velocity of flow and mass flow rate in the storage vessel during SF6 ionosphere release are simulated under different initial conditions, including initial temperature, pressure and filling mass. The flow field simulation results are taken as initial parameters in the three-dimensional refined model of SF6 ionosphere release, and the refined effects of SF6 ionosphere release are obtained.
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Key words:
- Flow field simulation /
- Sulfur hexafluoride /
- Ionosphere /
- Chemical release
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