Internal Drag Evaluation for a Through-Flow Nacelle Using a Far-Field Approach
Internal Drag Evaluation for a Through-Flow Nacelle Using a Far-Field Approach
复制标题
使用远场方法评估通流机舱的内部阻力
DOI：
10.2514/1.c033093
复制
发表时间：
2015
影响因子：
2.2
通讯作者：
E. Laurendeau
中科院分区：
文献类型：
--
作者：
Benoit Malouin;M. Gariépy;J. Trépanier;E. Laurendeau
本研究的主要目的是提出一种将短舱总阻力分解为外部阻力、内部阻力和尾流阻力的方法。从簿记协议来看，内部阻力（即，发动机短舱内产生的阻力）是发动机制造商的责任，不包括在飞机的总阻力中。因此，计算内阻力对于相关的机身和发动机制造商来说是强制性的，并且可以通过实验或计算流体动力学分析来实现。到目前为止，空气动力学工程师已经使用近场方法通过计算流体动力学分析来计算内部阻力，但是这种方法具有严重的缺点，包括其对滞流线的精确位置的依赖。本文提出的新方法已被应用于多个二维和三维的测试用例，结果表明，它是独立的停滞线的位置，并产生准确的结果，与实验和数值模拟吻合良好。
The main objective of this research is to propose a method for decomposing the total drag of a nacelle into external, internal, and wake drag. From a bookkeeping agreement, the internal drag (i.e., the drag generated inside a nacelle) is the engine manufacturer’s responsibility and is not to be included in the aircraft’s total drag. Consequently, computing the internal drag is mandatory for the airframe and engine constructors concerned and can be achieved either experimentally or by computational-fluid-dynamics analysis. Up to now, aerodynamic engineers have used a near-field approach to compute the internal drag using computational-fluid-dynamics analysis, but this method has serious drawbacks, including its dependency on the accurate location of the stagnation line. The new method proposed here has been applied to multiple two- and three-dimensional test cases, and results show that it is independent of the location of the stagnation line and yields accurate results that agree well with experimental an...
DOI：
10.1299/jsmeb.48.235
发表时间：
2005-05
期刊：
Jsme International Journal Series B-fluids and Thermal Engineering
影响因子：
--
作者：
Wataru Yamazaki;K. Matsushima;K. Nakahashi
通讯作者：
Wataru Yamazaki;K. Matsushima;K. Nakahashi