摘要
为了研究分段履带式水陆两栖车的水动力性能,实现减阻增速,将尾翼板安装到水陆两栖车的方艉部,并开展了水池试验和仿真研究,两者的研究结果具有较好的一致性。通过仿真研究了车体的纵向重心位置、尾翼板的长度和角度对水陆两栖车阻力性能的影响,并分析了阻力成分的变化趋势。研究结果表明:车体纵向重心位置在540~560 mm时,车体所受水阻力最小;在速度为3~5 m/s时,长度为156 mm,与水平面夹角为10°的尾翼板减阻效果最明显,相比于原裸车体的阻力,减阻率达到34.3%;加装尾翼板可以增加车体的尾部中空区长度,相当于增加了水线长,增大了长宽比。该研究表明:适当调节重心位置和优化尾翼板参数,可以有效实现水陆两栖车的减阻增速。
In order to study the hydrodynamic performance of a segmented-track amphibious vehicle,and realize resistance reduction to increase speed,stern flaps were applied to the transom stern.Model towed tests and numerical simulations were carried out and both the results agreed well with each other.The longitudinal position of the center of gravity,the length and angle of the stern flap were studied and the resistance components were analyzed.Research results show that with the longitudinal position of center of gravity between 540~560 mm,the vehicle suffered least resistance.At the velocity between 3~5 m/s,the stern flap with a length of 156 mm and an included angle of 10°with the horizontal plane has the most obvious drag reduction effect.Compared with the resistance of original naked vehicle body,the resistance reduction rate is 34.3%.The installation of the stern flap can increase the hollow area at the rear of the vehicle,which is equivalent to increasing the length of waterline,thus increasing the length-to-width ratio.This research method shows that the resistance reduction and speed increase of amphibious vehicle can be effectively realized by properly adjusting the center of gravity and optimizing the parameters of wave plate.
作者
孙承亮
徐小军
唐源江
郝军
SUN Chengliang;XU Xiaojun;TANG Yuanjiang;HAO Jun(College of Intelligence Science and Technology,National University of Defense Technology,Changsha 410073,China;Chongqing Changan Industry(Group)Co.,LTD,Chongqing 401120,China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2022年第5期201-208,共8页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(51675524)。
关键词
水陆两栖车
尾翼板
减阻增速
拖曳水池试验
数值仿真
segmented-track amphibious vehicle
stern flap
reduce resistance and increase speed
model towed tests
numerical simulation
