WRF模拟太原地区气象场特征及对弹丸的影响

在用WRF模拟太原地区2014年3月19号天气状况的基础上,得出该地区气象场特征,检验WRF模式在复杂地形下的模拟预报能力,并讨论了模拟的气象场对弹丸飞行造成的可能影响。结果表明:WRF模拟的气象场与真实大气比较接近;在该气象场背景下,射程为90 km的某弹丸由纵风引起射程误差较大,约为1 293.85 m,由横风在落点产生的横向偏差为304.85 m,由温度引起的射程偏差很小约为12.93 m。可见,实际大气对弹丸射击精度的影响是可观的,用WRF模拟的流场计算气象因素对弹丸射击精度的影响是有意义的。

Simulate Meteorological Field Characteristics of Taiyuan Area with WRF and Influence on Projectile

This paper uses WRF to simulate the weather characteristics of Taiyuan in 2014 on March 19,gets the characteristic and boundary layer wind field characteristics of Taiyuan;and WRF model in complex terrain analog forecasting capabilities is tested,and the possible impact of the wind farm features on spacecraft launch and flight is discussed. The results show that :wind field simulated by WRF is close to real wind field;with this simulated wind field,for a projectile of 90 kilometers range,the range error caused by wind is about 1293.85 meters,while the lateral deviation of the cross-wind generated in the placement of 304.85 meters,the range deviation caused by the temperature range is about 12.93 meters.At last,effects of the actual atmosphere on the projectile firing accuracy can not be ignored,and to calculate the influence of meteorological factors simulated by WRF on projectile firing accuracy is meaningful.