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- flowfield interfercne 流场干扰
- Abstract: A 3D numerical solution of transonic turbulent flowfield inside a compressor rotor is analyzed with a consideration of blade tip clearance. 文摘:借助于考虑叶片顶部间隙的压气机转子内跨音速湍流流场的三维数值解,得到了该转子流场中的复杂涡系与波系结构。
- To solve this problem, the steady internal flowfield of ramjet inlets at different boundary conditions was simulated and analyzed. 针对这一问题,对冲压发动机进气道进行了不同边界条件下的数值模拟,对稳态流场结果进行了分析。
- It is based on an asymmetric internal compression flowfield like a funel and derived with the technology of streamtracing and shock-cutting. 该进气道以内收缩锥轴对称流场为基础,采用流线追踪技术并截取激波面生成。
- A two dimensional TVD scheme with second order accuracy in space and time is used to simulate the horizontal relative motion flowfield between wedges. 采用时间和空间二阶精度的TVD格式数值模拟了二维楔的水平相对非定常运动过程与定常组合体流场。
- The flowfield around an airfoil with a spoiler is numerically simulated in a time-accurate manner using a 2D compressible Navier-Stokes solver. 基于2D可压N-S方程,对带扰流板的翼型绕流流场进行非定常数值模拟。
- The principal advantages of waveriders are the high lift-to-drag ratio at the design point and the uniform flowfield on the undersurface. 乘波构形的特点是高升阻比,下表面上的流动是均匀的,因此是推进系统/机身一体化设计的理想候选构形。
- All of these have a referenced meaning to understand the influence of vane diffuser and vaneless diffuser on the flowfield in the stage model. 这对于了解叶片扩压器和无叶扩压器对模型级内部流动特征的影响具有重要的参考价值。
- The boundary grid points contribution is controlled by cubic function. This paper lay solid foundations for making further study of the flowfield of ram accelerator. 用三次插值函数控制边界的网格点疏密分布,利用新方法将子块光滑拼接,为进一步研究冲压加速器的流场奠定了基础。
- The application of the jet impingement flowfield is wide, such as the vertical/short takeoff and landing (V/STOL) aircraft, rocket, and the heat jet industrial application. 摘要喷射撞击流在航空工程的应用有垂直/短程起降飞机、火箭及热喷射工业应用等。
- An experiment of the flowfield in the warship flight deck area is carried out in the water tunnel for different flow velocities and navigation direction angles. 为了满足舰载直升机的需要,南航直升机技术研究所对某舰飞行甲板区域流场进行了水洞试验。
- Experimental study using hot wire anemometer is carried out for the vaned diffuser of a centrifugal compressor.The flowfield data are taken and reduced. 五.;建立了进行级环境下扩压器内部流场实验研究的数据采集和处理方法,并用热线风速仪进行了测量;
- In this paper, the researchs on Solid Ducted Ramjet (SDR) inner flowfield with swirling injection were done and the applications of the swirl injection in SDR were explored. 针对固体火箭冲压发动机,本文开展了旋转射流进气对固体火箭冲压发动机内流场影响的研究,探索了旋转射流进气在固体火箭冲压发动机中的应用。
- Method Dynamic model of the exhalation valve plate in pressure oxygen mask was established.Aerodynamic force on the plate was determined by flowfield computing. 方法建立加压供氧面罩呼气活门板的动态数学模型,活门板上的气动力由流场计算确定,采用实验测量结合数值仿真的方法,对呼气活门板的动态特性进行了数值分析。
- Aiming at the characteristics of flowfield data sets and the methods of str eamline expression, the emphases reside in the problems of commonness, some curr ent situation, and future directions in streamline visualization. 重点针对流场数据和流线表达方法的特点,介 绍了流线可视化研究中一些具有共性的问题,以及近年来流线可视化技术的研究热点和动态 。
- The instantaneous flowfield inside the filtering candle during pulse cleaning process was measured by hot\|wire anemometer on the experimental set\|up of ceramic filter with three filtering candles. 在由三根滤管组成的陶瓷过滤器实验装置上,利用热线风速仪测定了脉冲反吹过程中滤管内瞬态流场,分析了喷吹压力对滤管内流场瞬态速度波形的影响。
- Then,the flowfield of nozzle exit vicinity and backflow region are calculated by using DSMC method,The results show that with this method,the flow property of this region can be accurately described. 本文分析了高空羽流流场的特性,论述了DSMC方法的原理以及涉及到的关键技术,应用DSMC方法数值求解了喷管出口附近及倒流区流场。
- The presented unsteady vortex sheet model could be used as an analysis tool for further research on the temporal-spatial structure of stator/rotor interaction in multistage turbomachinery flowfield. 此涡面简化模型可为进一步研究叶轮机叶排间干扰复杂流场的时空结构提供分析工具。
- The computation resuIts show that flowfield ofjet emanated from the nozzle with the type of elliptic contour and conic exit contour is of awell-organized large scale vortex structure. 计算结果表明,内流过渡曲面为椭球面而出口形状为锥面的风琴管式喷嘴,喷射出的圆形射流流杨具有良好的大尺度涡环结构。
- To illustrate the effect of endwall fence on turbine pneumatic characteristic, computational fluid dynamics were used to analyze the three-dimensional flowfield of turbine stators with endwall fence. 为明确翼刀改善涡轮静叶栅二次流的机理,采用数值模拟的方法研究了端壁加装翼刀静叶栅的三维流场。