Current Issue

24 June 1995, Volume 14 Issue 2   
  • THE NUMERICAL SIMULATION OF ARTIFICIALLY TRIGGERING LIGHTNING
  • Dong Wansheng;Ge Zhengmo
  • 1995 Vol. 14 (2): 141-150. 
  • Abstract ( ) PDF (352KB) ( )
  • In this paper, a two-dimensional plane symmetric model for the simulation of artificially triggering lightning has been developed.To the special triple elect ric structure of Gansu thunderstorm, the triggering height and the magnitude of surface electric field at which the lightning can be triggered successfully, the triggering range and the development of leader channel were calculated for the various charge distribution of thunderclouds.Why it is difficult to trigger lightning successfully when the surface electric field is negative under Gansu thunderstorms was analyzed too.The artificially triggering lightning for in a dipole clectric structure thundercloud has been also simulated.The results show that the central height of the small positive charge at the lower part of the clouds and its magnitude can affect remarkably triggering range and triggering height.The altitude of the whole clouds has significant influence on the triggering height, but little effect on the triggering range.The results also show that the intensity of the surface electric shielding layer has no influence on the triggering height, but can affect remarkably the value of surface electric field.