无线互联科技
無線互聯科技
무선호련과기
WUXIAN HULIAN KEJI
2015年
6期
76-78,82
,共4页
地效翼船%FLUENT%气动性质%横向静稳定性
地效翼船%FLUENT%氣動性質%橫嚮靜穩定性
지효익선%FLUENT%기동성질%횡향정은정성
WIG%FLUENT%Aerodynamic properties%Transverse static stability
针对地效翼船横向静稳定问题，利用FLUENT软件对处于地效区的地效翼船进行气动数值仿真。首先，在给定地效翼船展弦比下，对不同的相对飞行高度和攻角进行仿真；然后，在相同弦长下，对不同展弦比下的地效翼船进行仿真；计算出在不同的展弦比、相对飞行高度和攻角下的升力曲线；最后，通过计算分析地效飞行器横向静稳定性因素。研究结果表明，地效翼船在地效区飞行高度越低，其升力系数增长越快，同时，展弦比越大，升力系数相对飞行高度变化减缓。最后，基于地效翼船横向静稳定性因素，利用以上结论，讨论地效翼船的主翼设计特点。
針對地效翼船橫嚮靜穩定問題，利用FLUENT軟件對處于地效區的地效翼船進行氣動數值倣真。首先，在給定地效翼船展絃比下，對不同的相對飛行高度和攻角進行倣真；然後，在相同絃長下，對不同展絃比下的地效翼船進行倣真；計算齣在不同的展絃比、相對飛行高度和攻角下的升力麯線；最後，通過計算分析地效飛行器橫嚮靜穩定性因素。研究結果錶明，地效翼船在地效區飛行高度越低，其升力繫數增長越快，同時，展絃比越大，升力繫數相對飛行高度變化減緩。最後，基于地效翼船橫嚮靜穩定性因素，利用以上結論，討論地效翼船的主翼設計特點。
침대지효익선횡향정은정문제，이용FLUENT연건대처우지효구적지효익선진행기동수치방진。수선，재급정지효익선전현비하，대불동적상대비행고도화공각진행방진；연후，재상동현장하，대불동전현비하적지효익선진행방진；계산출재불동적전현비、상대비행고도화공각하적승력곡선；최후，통과계산분석지효비행기횡향정은정성인소。연구결과표명，지효익선재지효구비행고도월저，기승력계수증장월쾌，동시，전현비월대，승력계수상대비행고도변화감완。최후，기우지효익선횡향정은정성인소，이용이상결론，토론지효익선적주익설계특점。
The transverse static stability was the key concern for wing in ground (WIG). The flow of WIG was simulated under the ground effect by using FLUENT software. Firstly, given an aspect ratio of the wing of the WIG, relative ground clearance and angle of attack with different value were simulated. Secondly, with the same chord length, the wing of the WIG with different aspect ratios was simulated. Then, the curves of lift in characteristics were provided for the WIG under ground effect with different aspect ratio, angel of attack and relative ground clearance. Finally, the transverse static stability factors were analyzed through calculation. The research result shows that WIG in the lower relative ground clearance under ground effect, the faster growth of its lift coefifcient, also the bigger of the aspect ratio of a wing, the slower mitigation of its lift coefifcient. At the end, based on the WIG ship transverse static stability factors, the design characteristic of the main wing of the WIG was discussed using the conclusions above.
