Preliminary Computational Assessment of Disk Rotating Detonation Engine Configurations
Preliminary Computational Assessment of Disk Rotating Detonation Engine Configurations
复制标题
盘式旋转爆震发动机配置的初步计算评估
DOI：
10.2514/6.2020-2157
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
D. Paxson
中科院分区：
文献类型：
--
作者：
D. Paxson
采用准二维计算流体动力学模拟方法研究了旋转爆震发动机（RDE）的工作流体以径向为主的方式进入和离开的构型。该模拟基于笛卡尔坐标系，最初是为了研究更典型的环形RDE的物理和性能而开发的。讨论了适应径向和周向流场所需的修改。在这种圆盘RDE（DRDE）结构中产生的向心力产生了与环形RDE中所见不同的波结构。它们还根据流动是径向向内还是径向向外而引起显著不同的流体行为。使用基于熵的压力增益的测量，它被发现，对于本文中进行的初步理想化计算，向内流动的DRDE优于向外流动的变体。向内流动的RDE进一步显示出优于等效的环形RDE。研究了内外径比、内外截面面积比和入口喉道面积比等参数对性能的影响。
A rotating detonation engine (RDE) configuration whereby the working fluid enters and exits in a predominantly radial manner is examined using a quasi-two-dimensional computational fluid dynamic simulation. The simulation, based on a Cartesian coordinate system, was originally developed to examine the physics and performance of the more typical annular RDE. Modifications required to accommodate the radial and circumferential flowfield are discussed. The centripetal forces that arise in this disk RDE (DRDE) configuration create a different wave structure than that seen in the annular RDE. They also give rise to markedly different fluid behavior depending on whether the flow is radially inward or radially outward. Using an entropy-based measure of pressure gain, it is found that for the preliminary idealized calculations performed in this paper, the inward flowing DRDE outperforms the outward flowing variant. The inward flowing DRDE is further shown to outperform the equivalent annular RDE. The effects on performance of several parameters are examined, including inner-to-outer diameter ratio, inner-to-outer cross-sectional area ratio, and inlet throat-to-channel area ratio.
影响因子：
4.4
作者：
H. Nakayama;Takahiro Moriya;J. Kasahara;A. Matsuo;Y. Sasamoto;I. Funaki
通讯作者：
H. Nakayama;Takahiro Moriya;J. Kasahara;A. Matsuo;Y. Sasamoto;I. Funaki