Numerical Study of Chevron Jet Noise Using Parallel Flow Solver
Numerical Study of Chevron Jet Noise Using Parallel Flow Solver
复制标题
使用并行流求解器对 Chevron 喷射噪声进行数值研究
DOI:
10.1016/j.proeng.2013.07.090
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Xia H
中科院分区:
文献类型:
--
作者:
Xia H
Hybrid large-eddy type simulations for chevron nozzle jet flows are performed at Mach 0.9 and Re ∼ 106. Implicit or numerical large- eddy simulation (ILES or NLES) is employed, namely omitting explicit subgrid scale models. A Reynolds-averaged Navier-Stokes (RANS) solution is blended into the near wall region. This makes an overall hybrid LES-RANS approach. A Hamilton–Jacobi equation is applied to remove the disparate turbulence length scales implied by hybridization. Computations are contrasted for a baseline round nozzle and a highly bended chevron nozzle. The chevron effects are studied by comparing both nozzles using the same mesh resolution and flow conditions. Through the use of RANS simulations the state of the incoming boundary layer from the measurements is explored and the extent of any laminarization. Noise predictions are made using a permeable surface Ffowcs Williams – Hawkings (FWH) method based on the near field LES data. Results are compared with the NASA SHJAR measurement data. Parallel aspects of the flow solver are also explored including an improved data packaging/sending mechanism using scheduling.
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影响因子:
4.7
作者:
DiFrancescantonio, P
通讯作者:
DiFrancescantonio, P
DOI:
10.2514/6.2007-3596
发表时间:
2007
期刊:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子:
--
作者:
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1
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DOI:
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发表时间:
2000
期刊:
影响因子:
--
作者:
N. Saiyed
通讯作者:
N. Saiyed
影响因子:
4.6
作者:
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通讯作者:
A. Secundov