| 高升力下二维构型阻力准确测量研究 |
| |
| 引用本文： | 焦予秦,支真莉.高升力下二维构型阻力准确测量研究[J].实验流体力学,2011,25(2). |
| |
| 作者姓名： | 焦予秦 支真莉 |
| |
| 作者单位： | 西北工业大学翼型、叶栅空气动力学国家重点实验室,西安,710072 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划)(2007AA05Z448) |
| |
| 摘 要： | 翼型风洞试验阻力测量常使用尾迹流场测量积分求取阻力的方法,但各积分公式均建立在一定的假设基础上,有一定适用范围。在多段翼型流场N-S方程数值模拟和风洞试验的基础上,研究高升力情况下低速风洞阻力精确测量技术。通过N-S方程数值模拟求解多段翼型绕流场,分析尾迹流场的特点和常规风洞试验阻力计算公式推导时所作假设,提出新的更为准确的型阻计算公式;利用多段翼型绕流的数值模拟结果,积分表面压力和摩擦力求得翼型的气动特性,并利用计算得到的尾迹流场信息按照常规和新提出的风洞试验型阻计算公式计算阻力,将三者进行比较,检验提出的新型阻计算公式的准确性;通过风洞试验检验数值模拟得到的流场特点和新型阻计算公式。研究表明:在高升力条件下,传统型阻计算公式有很大的局限性,必须进行改进;提出的考虑尾迹区流动特点的新型阻计算公式能够得到更准确的阻力值。
|
| 关 键 词： | 风洞试验 多段翼型 高升力 阻力测量 数值模拟 |
Research of measurement method of two dimensional configuration drag test in wind tunnel in case of high lift |
| |
| JIAO Yu-qin,ZHI Zhen-li.Research of measurement method of two dimensional configuration drag test in wind tunnel in case of high lift[J].Experiments and Measur in Fluid Mechanics,2011,25(2). |
| |
| Authors: | JIAO Yu-qin ZHI Zhen-li |
| |
| Institution: | JIAO Yu-qin,ZHI Zhen-li(National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytecnical University,Xi'an 710072,China) |
| |
| Abstract: | Computational fluid dynamics and wind tunnel test are two main technical means to examine the aerodynamic performance of airfoil and two dimensional configuration.Two dimensional wind tunnel tests commonly use wake flow field measurement to integrate for drag of airfoil or two-dimensional configuration,but the integral formulas are based on certain assumptions and of certain bounds of application.In this paper,based on Navier-Stokes equations numerical simulation and two dimensional wind tunnel testing,the ... |
| |
| Keywords: | wind tunnel test multi-element airfoil high-lift drag measurement numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
