The corona discharge is the key to the study of ground lightning process and lightning warning,and most of the previous models are two-dimensional or one-dimensional models,and the corona discharge of a single building is the research object,therefore,more and more attention has been paid to the study of corona discharge in buildings,and the development of three-dimensional corona discharge model is of great significance.Three-dimensional corona discharge model considering wind field and ignoring wind field were developed,which are applied to single-needle system,double-needle system and nine-needle system,in order to prove the reliability and accuracy of the model,the influence of wind field on corona discharge of single-needle system and the interaction of multiple tips were studied.Different from the uniform mesh,the variable mesh method can not only realize the fine simulation of the small tip in the large simulation domain,but also expand the simulation domain.Compared with the one-dimensional and two-dimensional models,the present model can capture the space-time evolution of corona charge in the three-dimensional space more comprehensively,and is suitable for studying the characteristics of corona discharge between multiple tips,such as the nine-pin system,this is something that previous models have not been able to achieve.
维普
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