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论文:2012,Vol:30,Issue(1):62-67 |
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引用本文： |
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张强, 杨永. 不同湍流模型在射流推力矢量喷管数值模拟中的比较分析研究[J]. 西北工业大学 |
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Zhang Qiang, Yang Yong. Some Comparative Study of Turbulence Models for Fluidic Thrust Vectoring Nozzle[J]. Northwestern polytechnical university |
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| 不同湍流模型在射流推力矢量喷管数值模拟中的比较分析研究 |
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| 张强, 杨永 |
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| 西北工业大学 翼型、叶栅空气动力学国防科技重点实验室,陕西 西安 710072 |
| 摘要: |
| 利用数值模拟手段,分别求解以SA、SSTk-ω、EASMk-ω或k-ζ湍流模型封闭的RANS方程,针对激波控制射流推力矢量喷管展开研究,在多个主喷流压比NPR(4.6,7.0,8.78,10.0)和次主流压比SPR(0.7,1.0)下,系统考察了四种不同湍流模型对射流推力矢量喷管性能参数及主喷管内壁面压力分布的预测能力,探讨了激波控制产生推力矢量随不同参数的变化规律。并基于数值分析,定量给出了二次射流所带来的主喷管性能损失。数值计算结果表明,四种湍流模型都能比较准确预测出射流推力矢量喷管的性能参数,在激波捕捉和压力预测方面,相对而言SSTk-ω模型最为准确。 |
| 关键词:
湍流模型
RANS
射流推力矢量
矢量效率
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| Some Comparative Study of Turbulence Models for Fluidic Thrust Vectoring Nozzle |
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| Zhang Qiang, Yang Yong |
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| National Key Laboratory of Aerodynamic Design and Research,Northwestern Polytechnical University,Xi'an 710072,China |
| Abstract: |
| Aim.A comparative study of computational results was conducted to investigate the capabilities of differ-ent turbulence models for the fluidic thrust vectoring of a two-dimensional convergent-divergent nozzle with one in-jection port.Sections 1 through 5 explain our comparative study; we present all our simulation results in Figs.3through 11 and analyze them.SA,SST k-ω,EASM k-ω,k-ζ models were used respectively to close the ReynoldsAveraged Navier Stokes(RANS) equations and then to simulate both external and internal flows of the fluidic thrustvectoring nozzle at free stream Mach number 0.05,whose nozzle pressure ratio (NPR) is from 4.6 to 10 and whosesecondary pressure ratio (SPR) is 0.7 or 1.0.Our simulation results and their analysis show that: (1) all the fourturbulence models did a good job in predicting the performance of the thrust vectoring nozzle compared with the ex-perimental data available in the literature; (2) in the separated region,there was some difference in the pressuredistribution along the primary nozzle wall; numerical results indicate that the SST k-ω model is the best,and thenEASM k-ω,k-ζ model,the worst is SA model in comparison; (3) the penalty caused by the secondary injectionflow was also investigated using the numerical results; as expected,it is acceptable with an adaptive thrust vectorangle.Section 6 gives five preliminary conclusions in fairly good detail. |
| Key words:
analysis
algorithms
calculations
compressible flow
computational fluid dynamics
computationalgeometry
control
convergence of numerical methods
effects
efficiency
errors
evaluation
improve-ment
initial value problems
iterative methods
models
Navier-Stokes equations
nozzles
numericalmethods
pressure distribution
Reynolds number
simulation
stresses
turbulence
fluidic thrustvectoring nozzle
turbulence model
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| 收稿日期: 2011-04-16
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(11002117)资助 |
| 通讯作者:
Email： |
| 作者简介: 张强(1977-),西北工业大学讲师、博士,主要从事计算流体力学研究。
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| 作者相关文章 |
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| 张强 在本刊中的所有文章 |
| 杨永 在本刊中的所有文章 |
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参考文献: |
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[1] Deere K A. Summary of Fluidic Thrust Vectoring Research Conducted at NASA Langley Research Center. AIAA-2003-3800
[2] Kenric A W，Deere K A. Experimental and Computational Investigation of Multiple Injection Ports in a Convergent-DivergentNozzle for Fluidic Thrust Vectoring. AIAA-2003-3802
[3] 张 强, 杨 永. 一种 EASM k-ω 两方程湍流模型的应用研究. 西北工业大学学报, 2005, 23(1):89～92Zhang Qiang，Yang Yong. On Exploring Predicting Precision of an EASM k-ω Two-Equation Turbulence Model. Journal ofNorthwestern Polytechnical University, 2005, 23(1): 89～92 (in Chinese)
[4] 张 强, 杨 永, 李嘉乐. 基于新的描述湍流耗散方程的 k-ζ 两方程湍流模型的数值算法研究. 西北工业大学学报，2009, 27(4):466～478Zhang Qiang，Yang Yong，Li Jiale. Applying Robinson's New Two-Equation Turbulence k-ζ Model to Numerically SimulatingTurbulent Flow. Journal of Northwestern Polytechnical University, 2009, 27(4): 466～478 (in Chinese)
[5] 张 强, 杨 永. 绕翼型低雷诺数流动的数值分析研究. 空气动力学学报, 2006, 24(4):482～466Zhang Qiang，Yang Yong. Numerical Analysis of Low Reynolds Number Flow over Airfoil. Acta Aerodynamic Sinca，2006，24(4): 482～466 (in Chinese) |
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