Fast and Precise Prediction of Complex Heat and Fluid Flows by Hybrid Wind Tunnels

通过混合风洞快速准确地预测复杂的热流和流体流

• 批准号: 20760136
• 负责人: ODA Yutaka
• 金额: $ 2.33万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760136/
• 关键词: 熱流体工学; 数値流体力学; 強制対流; 乱流伝熱; 熱流体計算; 数値シミュレーション

In this study, fast and precise simulation techniques to simulate complex heat and fluid flows in wind tunnel tests were developed to obtain detailed information from wind tunnel experiments. For example, time-series of inflow velocity fluctuation measured in wind tunnel tests were modeled with random Fourier modes and applied to the simulations to reproduce the realistic turbulent inflow. The effectiveness of the method was confirmed by the comparison between experiments and simulations of the starting process in a shock tunnel and by the prediction of complex flow and heat transfer fields at the leading edge of a symmetric airfoil in a low speed wind tunnel.

在本研究中，开发了快速而精确的模拟技术来模拟风洞试验中复杂的热流和流体流，以获得风洞实验的详细信息。例如，在风洞试验中测量的流入速度波动的时间序列采用随机傅里叶模式进行建模，并应用于模拟以重现真实的湍流流入。通过激波风洞启动过程的实验与模拟对比以及低速风洞对称翼型前缘复杂流场和传热场的预测，证实了该方法的有效性。

项目成果

Large Eddy Simulations of Endwall Heat Transfer Around Junction of a Symmetric Vane

对称叶片连接处端壁传热的大涡模拟

• 发表时间: 2009
• 期刊: Proc. of 6th International Symposium on Turbulence, Heat and Mass Transfer (CD-ROM)
• 作者: Yutaka Oda;Kenichiro Takeishi;Satoshi Hada;Yoshihiro Nuta
• 通讯作者: Yoshihiro Nuta

対称翼前縁の翼端部に生じる馬蹄渦による乱流熱伝達のLES

由于对称机翼前缘尖端产生的马蹄形涡流而导致的湍流传热的 LES

• 发表时间: 2009
• 作者: Yoshihiro Nuta;Kenichiro Takeishi;Yutaka Oda;Satoshi Hada;Seijiro Mori;Yutaka Oda;Yoshihiro Nuta;小田豊;小田豊;小田豊
• 通讯作者: 小田豊

Numerical Simulation of Transient Flow and Thermal Characteristics of Two-dimensional Supersonic Nozzle in Shock Tunnel

二维超声速喷管激波风洞瞬态流动及热特性数值模拟

• 发表时间: 2008
• 期刊: Proc. of 7th JSME-KSME Thermal and Fluids Engineering Conference (CD-ROM)
• 作者: Yutaka Oda;Tomoya Abe;Kenichiro Takeishi;Yusuke Oda
• 通讯作者: Yusuke Oda

対称翼前縁付け根部の熱伝達に及ぼす主流乱れの影響について

主流湍流对对称机翼前缘根部传热的影响

• 发表时间: 2009
• 作者: Yoshihiro Nuta;Kenichiro Takeishi;Yutaka Oda;Satoshi Hada;Seijiro Mori;Yutaka Oda;Yoshihiro Nuta;小田豊;小田豊
• 通讯作者: 小田豊

The Effect of Leading Edge Diameter and Mainstream Velocity on The Endwall Heat Transfer

前缘直径和主流速度对端壁传热的影响

• 发表时间: 2008
• 期刊: Proc. of 19th International Symposium on Transport Phenomena (CD-ROM)
• 作者: Yoshihiro Nuta;Kenichiro Takeishi;Yutaka Oda;Satoshi Hada;Seijiro Mori
• 通讯作者: Seijiro Mori