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| 基于蒙特卡罗法的航空发动机稳态空气系统网络计算 | |
| 引用本文： | 胡肖肖,李育隆,吴宏.基于蒙特卡罗法的航空发动机稳态空气系统网络计算[J].航空发动机,2014,40(6):28-32. |
| 作者姓名： | 胡肖肖 李育隆 吴宏 |
| 作者单位： | 1. 中国舰船研究设计中心,武汉,430064 2. 清华大学航天航空学院,北京,100084 3. 北京航空航天大学能源与动力工程学院,北京,100191 |
| 基金项目： | 国家自然科学基金(51176004)资助 |
| 摘 要： | 为了解决目前稳态空气系统算法在求解复杂网络时不容易获得收敛解的问题,将航空发动机稳态空气系统简化为由节点和元件组成的网络,借助概率思想计算连续性方程和能量方程,建立相应的随机游动模型,运用蒙特卡罗方法求解各节点的压力,再根据流量与元件两端压力的关系,计算流经各元件的流体流量。将计算得到的不同工况下航空发动机稳态空气系统内部节点的压力和流量值,与flowmaster计算结果进行比较,二者吻合较好,压力最大偏差为0.628%。蒙特卡罗方法与网络法相比,优势在于计算简便,且不会出现无法求解复杂空气系统网络的情况。 |
| 关 键 词： | 蒙特卡罗法 稳态 空气系统 压力 流量 航空发动机 |
Aeroengine Steady Air System Calculation Based on Monte Carlo Method |
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| Authors: | HU Xiao-xiao LI Yu-long WU Hong |
| Institution: | 1. China Ship Development and Design Center, Wuhan 430064, China; 2.School of Aerospace, Tsinghua University, Beijing 100084,China; 3. School of Jet Propulsion, Beihang University, Beijing 100191, China |
| Abstract: | Steady air system of aeroengine was simplified as a network which was composed of notes and elements. Continuityequation and energy equation were calculated by means of probability. The random walks model was developed, and pressure was calculated by the method of Monte Carlo, and then mass flow of components could be calculated according to correlation between mass flow and pressure. Pressure and mass flow of inner notes of steady air system of aeroengine under different conditions were calculated. The pressure results show good agreement with the method of flowmaster, and the maximum error of pressure is only 0.628%. Compared to network method, calculation of Monte Carlo method is easy, which could avoid to calculate the complex air system. |
| Keywords: | Monte Carlo method steady state air system pressure mass flow aeroengine |
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