A Study on the Turbulent Mixing and Chemical Reaction by the Stochastic Process Model and Random Fourier Modes Method

随机过程模型和随机傅里叶模态方法研究湍流混合与化学反应

基本信息

  • 批准号:
    11650171
  • 负责人:
  • 金额:
    $ 2.3万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    1999
  • 资助国家:
    日本
  • 起止时间:
    1999 至 2000
  • 项目状态:
    已结题

项目摘要

The progress and results of the research are summarized in the following,Object (A) Simulations by the Stochastic ModelThe reactive mixing layer with second-order chemical reation in the grid-turbulence has been simulated by the probability density function (pdf) method. The particle velocity was modeled by a simplified Langevin model. Three kinds of mixing models, such as the Curl's model, modified Curl's model and binomial Langevin model have been used. It is found that the binomial Langevin model is most suitable to predict the pdf of the reactive scalar quantities. Next, the thermal diffusion field from the axisymmetric heated line source has been simulated by using a generalized Langevin model and the binomial sampling model. The simulation results of the tempareature field up to second-order moment are in good agreement with the experimental data. Further, the plume of matter from the wall point source in the turbulent water pipe flow has been also investigated.Object (B) Simulations the Random Fourier Modes MethodAt first, we investigated the non-reactive plume developed in the grid-turbulence by the random Fourier modes method and two-particle backward diffusion technique. In case of the point source plume, the mean and r.m.s. fluctuation values of scalar quantity show good agreements with the experimetal results. Next the plume around the two-dimensional cylinder in the grid-turbulence has been investigated. The point source plume impinging perpendiculary on the cylinder has been simulated. The simulation results showed that the velocity induced by the wake vortices gives the important role on the spread of the diffusion around the cylinder. From this time on, the non-reative and reactive plume around the cylinder will be investigated by introducing the vortex shedding model into the wake.
本文的研究进展和成果概括如下:(一)随机模型的模拟采用概率密度函数(pdf)方法模拟了网格湍流中的二阶化学反应混合层。颗粒速度模型采用简化的Langevin模型。采用了三种混合模型,即Curl模型、修正的Curl模型和二项式Langevin模型。结果表明,二项式朗之万模型最适合于预测反应标量的概率密度函数。其次,采用广义朗之万模型和二项式抽样模型对轴对称加热线源的热扩散场进行了数值模拟。温度场的模拟结果与实验数据吻合较好,直到二阶矩。此外,还研究了圆管湍流中的壁面点源羽流。对象(B)随机傅立叶模方法模拟首先,我们采用随机傅立叶模方法和两粒子后向扩散技术研究了在网格湍流中产生的非反应羽流。在点源羽流的情况下,平均值和r.m.s.标量涨落值与实验结果吻合较好。其次,对网格湍流中二维圆柱周围的羽流进行了研究。模拟了点源羽流对圆柱体的冲击。计算结果表明,尾迹涡诱导的速度对圆柱周围扩散的扩散起着重要的作用。从这一时刻起,非反应和反应羽流周围的圆柱将被引入涡脱落模型的尾迹研究。

项目成果

期刊论文数量(24)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Y.Sakai: "Simulation of Scalar Fluctuation Field by a Non-Buoyant Plume in Grid-generated Turbulence by Random Fourier Modes Method"IUTAM Symposium on Geometry and Statistics of Turbulence. 191-196 (2001)
Y.Sakai:“通过随机傅里叶模式方法模拟网格生成湍流中非浮力羽流的标量脉动场”IUTAM 湍流几何与统计研讨会。
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    0
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角田博之: "等方一様乱流中におけるスカラ拡散場のラグランジュ特性に関する研究"日本機械学会流体工学部門講演会講演論文集[No.99-19]. 469-470 (1999)
Hiroyuki Tsunoda:“各向同性均匀湍流中标量扩散场的拉格朗日特性的研究”日本机械工程师学会流体工程分会论文集[No.99-19](1999)。
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    0
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Y.Sakai et al.: "Stocastic Simulation of the Plume Diffusion Field from a Wall Point Source in a Turbulent Pipe Flow"Proceedings of the 13th JSME Computational Mechanics Conference. No.00-17 (in Japanese). 151-152 (2000)
Y.Sakai 等人:“湍流管流中壁点源的羽流扩散场的随机模拟”第 13 届 JSME 计算力学会议论文集。
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    0
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酒井康彦: "フーリエモードとBurgers渦による疑似一様等方性乱流場における2粒子拡散"第13回数値流体力学シンポジウム,講演論文集. CD-ROM 論文番号 B03-3. 1-4 (1999)
Yasuhiko Sakai:“由于傅立叶模式和 Burgers 涡流导致的准均匀各向同性湍流场中的双粒子扩散”第 13 届计算流体动力学研讨会,论文集 B03-3 号(1999 年)。
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    0
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Y.Sakai et al.: "Stochastic Simulation of Reactive-Scalar Mixing Layer in a Grid Turbulence by the PDF Method"Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference. (CD-ROM) paper No.7771. 1-8 (1999)
Y.Sakai 等人:“通过 PDF 方法对网格湍流中的反应标量混合层进行随机模拟”第三届 ASME/JSME 联合流体工程会议论文集。
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SAKAI Yasuhiko其他文献

Effect of Schmidt number in planar jet with chemical reaction by DNS
DNS 化学反应对平面射流施密特数的影响
  • DOI:
    10.1299/transjsme.21-00043
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    KITO Kenji;IWANO Koji;SAKAI Yasuhiko;ITO Yasumasa
  • 通讯作者:
    ITO Yasumasa

SAKAI Yasuhiko的其他文献

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{{ truncateString('SAKAI Yasuhiko', 18)}}的其他基金

Development of the in-situ ultra-high-resolution LIF probe having both functions of the light emission and collection for the measurement of turbulent fluctuation concentration in the liquid phase
开发具有发光和收集功能的原位超高分辨率LIF探针,用于测量液相中的湍流波动浓度
  • 批准号:
    25630052
  • 财政年份:
    2013
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Development of ultra-high-resolution optical-fiber probe for the measurement of fluctuation concentration of multiple species by the discrete light-absorption spectrometric method
离散光吸收光谱法测量多组分波动浓度超高分辨率光纤探头的研制
  • 批准号:
    23656134
  • 财政年份:
    2011
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Clarification of the Lagrangian multi-scale mixing mechanism of High-Peclet number turbulent diffusion/reactive fields and its modeling
高佩克莱数湍流扩散/反应场拉格朗日多尺度混合机制的阐明及其建模
  • 批准号:
    22360077
  • 财政年份:
    2010
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on the fine・cale mixing ・ chemical reaction process of matter in the liquid turbulent flows and the stochastic simulation method
液体湍流中物质的细小混合·化学反应过程及随机模拟方法研究
  • 批准号:
    16360089
  • 财政年份:
    2004
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
A Study on the Turbulent Mixing and Chemical Reaction by the Stochastic Differential Equation and Random Fourier Modes Method
随机微分方程和随机傅里叶模态方法研究湍流混合与化学反应
  • 批准号:
    13650174
  • 财政年份:
    2001
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Study on the Turbulent Diffusion of Matter and Small Particles by the Random Fourier Modes Method and Stochastic Model
随机傅里叶模态方法和随机模型研究物质和小颗粒的湍流扩散
  • 批准号:
    09650183
  • 财政年份:
    1997
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

相似海外基金

A Study on the Turbulent Mixing and Chemical Reaction by the Stochastic Differential Equation and Random Fourier Modes Method
随机微分方程和随机傅里叶模态方法研究湍流混合与化学反应
  • 批准号:
    13650174
  • 财政年份:
    2001
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Study on the Turbulent Diffusion of Matter and Small Particles by the Random Fourier Modes Method and Stochastic Model
随机傅里叶模态方法和随机模型研究物质和小颗粒的湍流扩散
  • 批准号:
    09650183
  • 财政年份:
    1997
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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