DNS and Modelling of Turbulent Heat Transfer for Low to Medium-High Prandtl Number Fluids

低到中高普朗特数流体的 DNS 和湍流传热建模

• 批准号: 09650256
• 负责人: KAWAMURA Hiroshi
• 金额: $ 2.11万
• 依托单位: Science University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650256/
• 关键词: Turbulence; Heat transfer; Prandtl number; Turbulence model; Direct numerical simulation; DNS; 乱流モデレ; 直接シミュレーション

With an aid of recent development in the super and parallel computers, the deirect numerical simulation (DNS) of turbulence is now performed increasingly for various configulations and boudary conditions. The DNS provides us with the detailed distributions of the turbulent quantities, such as the averaged velocity, temperature, turbulent heat flux and the budgets of transport equations. The modelling of the turbulence, on the other hand, is still an important tool in the engineering analysis of the turbulent heat and fluid flow, because the application of the DNS is now limited only to low Reynolds number turbulence with relatively simple geometries. The information obtained from the DNS contributessignificantly to the refinement of the turbulence modelling.In the present study, DNS of the fully developed channel flow with the scalar transport were performed, where various Prandtl number fluids were examined with several kinds of thermal conditions imposed. A scalar transport model was developed and examined in comparison with the obtained DNS results.

近年来，随着超级计算机和并行计算机的发展，湍流的直接数值模拟（DNS）越来越多地用于各种湍流和边界条件。DNS为我们提供了详细的湍流量的分布，如平均速度，温度，湍流热通量和输运方程的预算。另一方面，湍流的建模仍然是湍流热和流体流动的工程分析中的重要工具，因为DNS的应用现在仅限于具有相对简单的几何形状的低雷诺数湍流。从DNS中获得的信息contributessignificantly湍流modeling.In本研究中，DNS的充分发展的通道流与标量输运进行，其中各种普朗特数的流体进行了检查与施加几种热条件。一个标量传输模型的开发和研究中得到的DNS结果进行比较。

项目成果

Kawamura, H.: "DNS of Turbulent Heat Transfer in Channel Flow with Low to Medium-High Prandtl Number Fluid" Int.Jo Heat and Fluid Flow. 19. 482-491 (1998)

Kawamura, H.：“低至中高普朗特数流体通道流中湍流传热的 DNS”Int.Jo 热与流体流动。

Kawamura,H.他: "DNS of Turbulent Heat Transfer in channel flow with low to medium-high Prardtl number fluids" Int.J.Heat and Fluid Flow. 19. 482-491 (1998)

Kawamura, H. 等人：“低至中高 Prardtl 数流体通道流动中的湍流传热的 DNS”Int.J.Heat and Fluid Flow 19. 482-491 (1998)。

Kawamoto, N.: "DNS and Modelling of Turbulent Heat Transfer in Channel Flow with a Spanurise Mean Temperature Gradient" 13th Australasian Fluid Mechanics Conf.2. 611-614 (1998)

Kawamoto, N.：“具有 Spanurise 平均温度梯度的通道流中的湍流传热的 DNS 和建模”第 13 届澳大利亚流体力学会议 2。

Kawamura, H., Kawamoto, N., Abe, H., Matsuo, Y.: "DNS and Modelling of Turbulent Heat Transfer in Channel Flow with Various Prandtl Numbers" Proc.11th Int.Heat Transfer Conference. Vol.4. 193-198 (1998)

Kawamura, H.、Kawamoto, N.、Abe, H.、Matsuo, Y.：“具有各种普朗特数的通道流中的 DNS 和湍流传热建模”Proc.11th Int.Heat Transfer Conference。

Kawamura,H.他: "DNS and Modelling of Turbulert Heat Transfer in channel Flow with various Prardtl numbers" Proc.11th Int.Heat Transfer Conf.4. 193-198 (1998)

Kawamura, H. 等人：“具有各种 Prardtl 数的通道流中的湍流传热的 DNS 和建模”Proc.11th Int.Heat Transfer Conf.4 (1998)。