Exact Solution of the Bidirectional Vortex
Exact Solution of the Bidirectional Vortex
复制标题
双向涡旋的精确解
DOI：
10.2514/1.14872
复制
发表时间：
2006
期刊：
影响因子：
2.5
通讯作者：
J. Majdalani
中科院分区：
文献类型：
--
作者：
A. B. Vyas;J. Majdalani
在本文中，我们提出了一种无粘性解决方案，描述了圆柱形室内双向涡流的气旋运动。这项研究是由于需要表征涡流驱动推力室内的流场而进行的。该室的优点是，将混合和燃烧限制在内部涡流管内，该内部涡流管借助外部涡流低温氧化剂流而与室壁保持分离。我们的模型基于非反应、稳定、旋转、轴对称、不可压缩和无粘流条件。与其他不考虑轴向依赖性的柱状涡流研究不同，本模型考虑了腔室的有限主体长度。事实上，它结合了与旋流驱动旋风分离器相关的入口和端壁条件。根据所得到的公式，捕获了几个流动特征。其中就是轴向速度消失的内外涡界面位置。
In this paper, we present an inviscid solution that describes the cyclonic motion of a bidirectional vortex in a cylindrical chamber. The study is prompted by the need to characterize the flowfield inside a swirl-driven thrust chamber. This chamber has the advantage of confining mixing and combustion to an inner vortex tube that remains separated from the chamber walls by virtue of an outer stream of swirling, low temperature oxidizer. Our model is based on nonreactive, steady, rotational, axisymmetric, incompressible, and inviscid flow conditions. Unlike other studies of columnar vortices where the axial dependence is not considered, the present model accounts for the chamber's finite body length. In fact, it incorporates the inlet and headwall conditions associated with a swirl-driven cyclone. Based on the resulting formulation, several flow features are captured. Among them is the location of the inner-outer vortex interface where the axial velocity vanishes.