1) shaped beam
波瓣赋形
2) lobe
波瓣
1.
Numerical study of k-ε turbulent models for flow within a straightly lobed nozzle;
直排波瓣喷管引射器流场计算k-ε模型的选择
2.
In this paper, a numerical procedure to study the mixing flow in a circularly lobed nozzle is presented.
采用贴体曲线坐标、SIMPLEC算法和完全压力修正 ,在非正交性非常大的结构型同位网格上求解了圆排波瓣喷管引射器内流场的不可压Navier Stokes方程 ,湍流采用标准k ε涡黏模型 。
3.
For the purpose of infrared stealth, the lobe and bend exhaust nozzle is required for the turbo shaft engine to eject surrounding cooling air and to change the direction of exhaust jets.
将圆排波瓣喷管配以不同的弯曲混合管组成引射混合器 ,实验研究了弯曲混合管的几何参数 ,试验结果表明 :当弯曲角β=40°时 ,弯曲混合管的引射流量比φ与同样直径的圆柱混合管相当 ;当β>40°时 ,弯曲混合管的引射流量比φ相比于同样直径的圆柱混合管有较大的下降 ,φ随β的增加下降很快 ;φ随混合管截面比λ的增加先增大后下降 ,虽然峰值小于圆柱混合管的最大引射流量比 ,但是峰值对应的值却近似等同于圆柱混合管的截面比 ;φ随次流进口截面比 σ的增加而接近线性增大。
3) lobed nozzle
波瓣喷管
1.
Based on Fluent soft,Some numerical simulations were carried out for the fluid fields which established from the schemes of the installation of the lobed nozzle infrared suppressor installed on helicopter.
基于Fluent软件,针对波瓣喷管红外抑制器的不同装机方案,进行了其内部和动力舱全流场的数值模拟。
2.
Aiming at the infrared suppressor for a type of turboshaft engine which exhausts in front,a new idea of suppressor structure combining lobed nozzle with film cooling mixing duct is brought forward,with the purpose of decreasing infrared radiation of the mixing duct wall.
针对某型后向进气、前向排气的涡轴发动机用红外抑制器,提出了波瓣喷管和气膜冷却混合管组合的红外抑制概念,旨在进一步降低混合管壁面红外辐射强度。
3.
A new configuration of infrared suppressor embedding the hot components into the back of the fuselage was presented,which ejected the ambient air into core flux utilizing lobed nozzle at the same time entrained the downwash to forced mixing.
通过数值模拟和实验分析比较了波瓣喷管与旋翼下洗的混合流场,并且获得了不同旋翼下洗气流作用下模型壁面的红外辐射光谱。
4) single lobe
单波瓣
1.
Qualitatively analyze the existing problem of the antenna height scanning for the EUT with radiating characteristics(single lobe and multi-lobes)in the measurement method.
对具有不同辐射特性(单波瓣和多波瓣)的受试设备天线高度扫描问题进行了定性分析。
5) multi-lobes
多波瓣
1.
Qualitatively analyze the existing problem of the antenna height scanning for the EUT with radiating characteristics(single lobe and multi-lobes)in the measurement method.
对具有不同辐射特性(单波瓣和多波瓣)的受试设备天线高度扫描问题进行了定性分析。
6) beam split
波瓣分裂
1.
The beam of VHF radar is rather wide,and the reflection from ground results in beam split,thus the radar can only be used to estimate its height while it cannot be used to measure the height accurately.
米波雷达的波束较宽、由于地面反射引起波瓣分裂,通常只能估高而不能用来测高。
2.
In this paper,the effect of landform on the heightfinding method based on beam split in VHF Radar,namely,phase comparison and amplitude comparison,is studied.
针对基于波瓣分裂的米波雷达"比相-比幅"测高方法,研究地形对米波雷达测高的影响。
3.
To resolve this problem,the paper proposes an accurate and effective method for measuring the altitude based on beam split,namely,Phase-comparison and Amplitude-comparison.
针对米波雷达的波束较宽、由于地面反射引起波瓣分裂,通常只能估高而不能测高这一难题,提出一种基于分裂波瓣的米波雷达低仰角测高方法——比相比幅法。
参考词条
补充资料：赋形
1.谓赋予人或物以某种形体。 2.谓模拟形体。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。