Development of a single-scale initial flow field into steady homogeneous turbulence with validating a constructed Fourier spectral analysis
Development of a single-scale initial flow field into steady homogeneous turbulence with validating a constructed Fourier spectral analysis
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将单尺度初始流场发展为稳定均匀湍流并验证构造的傅里叶谱分析
DOI：
10.1088/1742-6596/2313/1/012008
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Toshinori Kouchi
中科院分区：
文献类型：
--
作者：
Hiroki Suzuki;Toshinori Kouchi
本研究将单尺度初速度场发展为稳定均匀各向同性湍流。在这里，我们验证了一个构造的傅立叶谱分析，然后用于处理当前的问题。采用Lundgren（2003）的线性强迫方案，维持了当前均匀各向同性湍流的稳定。这里，为这个方案设置了两个主系数的值。初始速度场也被设置为保持气流全局各向同性。本研究探讨了湍流统计、可视化结果和结构功能的时间发展。如Rosales和Meneveau（2005）先前的研究所示，稳定状态下的湍流长度尺度可以独立于线性强迫系数的值。湍流场需要比湍流时间尺度长10到15倍才能达到这种稳定状态。与湍流统计相比，结构函数达到稳态曲线需要更长的时间。
This study presents the development of a single-scale initial velocity field into steady homogeneous isotropic turbulence. Here, we verify a constructed Fourier spectral analysis, which is then used to approach the present issue. The present homogeneous isotropic turbulence is maintained steady by using a linear forcing scheme of Lundgren (2003). Here, two values of the primary coefficient are set here for this scheme. The initial velocity field is also set to maintain the flow globally isotropic. Temporal developments of turbulence statistics, visualization results and structure functions are examined in this study. As shown in a previous study, Rosales and Meneveau (2005), the turbulence length scale at a steady-state could remain independent of a value used for the linear forcing coefficient. The turbulence fields needed 10 to 15 times longer than the turbulence time scale to achieve this steady-state. A larger amount of time was needed for the structure functions to reach their steady-state profiles than for the turbulence statistics.
影响因子：
1.5
作者：
Makita Hideharu
通讯作者：
Makita Hideharu
影响因子：
2.2
作者：
H. Suzuki;S. Mochizuki;Y. Hasegawa
通讯作者：
H. Suzuki;S. Mochizuki;Y. Hasegawa
DOI：
10.1146/annurev.fl.19.010187.002011
发表时间：
1987
期刊：
--
影响因子：
--
作者：
C. Canuto;M. Hussaini;A. Quarteroni;T. Zang
通讯作者：
C. Canuto;M. Hussaini;A. Quarteroni;T. Zang