英汉例句

• flow structures and the nature of vortex breakdown over a delta wing with large swept angle are studied by means of a high resolved simulation through navier stokes equations solver.

  本文通过高清晰度的n-s方程数值模拟对绕大后掠三角机翼的旋涡流动结构及旋涡破裂进行了研究，给出了机翼背风面上复杂的旋涡流动结构，绘制了流动横截面上的截面流线。

• the procedure of the vortex breakdown transition at high angle of attack over a delta wing is investigated numerically by solving the unsteady full navier stokes equation.

  时某外形三角翼背风区旋涡破裂的发展、演变过程，并对旋涡区域的截面流态和涡轴上奇点附近的空间流动特征进行了分析。

• moreover, in respect of large-sized vortex breakdown and the reduction of leakage losses the vortex-prevention ring of type b is markedly superior to that of type a.

  而且，在破碎大尺度旋涡和减少泄漏损失方面，b型防涡圈明显优于a型防涡圈。

• the location of vortex breakdown was recorded using phase locked photography technique.

  流动显示图形采用相位锁定照相记录。

• spectrum analysis reveals the frequency characteristics of vortex breakdown point oscillation and spiral wave.

  频谱分析确定了破裂点脉动和螺旋波的频率特征。

• results of the test show that the location of vortex breakdown point in unsteady experiments, like unsteady aerodynamic loads, would produce hysteresis loops.

  实验表明，在非定常过失速情况下，涡的破碎位置与非定常气动力一样具有迟滞环特性。

• the leading edge vortex breakdown can be delayed using supplements to change the flow field over upper surface of the wing.

  利用附加的小辅助件，改变翼面上方的流场，使机翼前缘肌体涡推迟破裂。

• the vortex breakdown results in the low-energy fluid accumulating on the casing wall spreads out remarkably, which has a large blockage effect on incoming flow.

  定常数值模拟结果表明，近失速工况下泄漏涡在叶片通道内部发生破碎，涡破碎使得堆积在机匣壁上的低能流体迅速扩散，对来流产生了很大的阻塞效应。

• the wing vortex breakdown on canard on configuration was delayed relative to that on canard off configuration, but the canard vortex broke down very early.

  鸭式布局主翼涡破裂较无鸭翼布局有所延迟，但鸭翼自身涡系破裂较早。

• the results show that, the starting angle of attack of vortex breakdown is related to pitching speed very complicatedly, but doesn't change much in present calculation.

  结果表明，在三角翼匀速上仰非定常绕流中，涡破裂起始攻角与上仰速度关系比较复杂，在本计算速度范围内，涡破裂起始攻角变化很小；

• this paper also presents analysis of the flow features ahead and behind of the leading edge vortex breakdown and the topological features of section streamlines.

  本文还分析了前缘分离涡破裂前后的流动现象和旋涡横截面流线图谱的变化规律。