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Spectra and scaling in chemically reacting compressible isotropic turbulence
Physical Review Fluids ( IF 2.7 ) Pub Date : 
Jian Teng, Jianchun Wang, Hui Li, Shiyi Chen

Numerical simulations are carried out to study the spectra and statistics in chemically reacting compressible homogeneous isotropic turbulence at turbulent Mach number Mt from 0.1 to 1.0 and at Taylor Reynolds number Reλ from 54 to 103 with solenoidal forcing. A single-step irreversible Arrhenius type chemical reaction is implemented to evaluate the influence of chemical reaction on spectra and flow statistics. It is shown that in the situation of isothermal reactions, both the ratio of compressible kinetic energy to solenoidal kinetic energy Kc/Ks and the ratio of compressible dissipation to solenoidal dissipation ϵc/ϵs exhibit a Mt4 scaling at low turbulent Mach numbers $M_{t}

中文翻译:

化学反应可压缩各向同性湍流的光谱和尺度

进行了数值模拟,研究了在马赫数为湍流的化学可压缩均质各向同性湍流中的光谱和统计数据。 中号Ť 从0.1到1.0且为泰勒雷诺数 [RËλ从54到103,带电磁力。通过单步不可逆的Arrhenius型化学反应来评估化学反应对光谱和流量统计的影响。结果表明,在等温反应情况下,可压缩动能与螺线管动能之比ķC/ķs 以及可压缩耗散与电磁耗散之比 ϵC/ϵs 展示 中号Ť4 在低湍流马赫数$ M_ {t}下缩放
更新日期:2020-07-08
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