Measurement of Turbulence and Heat Transfer Enhancement Structure of Polymer Solution Flows in Microchannel

微通道内聚合物溶液流动的湍流及强化传热结构的测量

• 批准号: 22760149
• 负责人: TATSUMI Kazuya
• 金额: $ 2.66万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22760149/
• 关键词: 粘弾性流体; 伝熱促進; マイクロ流路; 蛇行流路; 二次流れ; 不安定性促進; 非ニュートン流体; 圧力損失; 流動特性; 非定常流れ; 二次渦; 高分子; 乱れ促進; 速度場計測; ミリ流路

Heat transfer and pressure loss measurements and flow visualization were carried out for viscoelastic fluid flow in a serpentine channel in order to evaluate the heat transfer enhancement performance of using such non-Newtonian fluids. Polyacrylamide water solution was used as viscoelastic fluid. The visualized flow patterns showed that unsteady flows and longitudinal vortex-like secondary flows are generated even under the condition of$ Re<$ 2. 0 in the viscoelastic fluid case. These flows produced a remarkable heat transfer enhancement effect compared to the case of Newtonian fluid. Further, a good correlation was observed between the heat transfer and pressure loss characteristics with the Weissenberg number.

对蛇形通道中的粘弹性流体流动进行传热和压力损失测量以及流动可视化，以评估使用此类非牛顿流体的传热增强性能。使用聚丙烯酰胺水溶液作为粘弹性流体。可视化流型表明，在粘弹性流体情况下，即使在$Re<$2. 0的条件下，也会产生非定常流动和纵向涡状二次流。与牛顿流体的情况相比，这些流动产生了显着的传热增强效果。此外，还观察到传热和压力损失特性与韦森伯格数之间存在良好的相关性。

项目成果

蛇行流路内粘弾性流れにおける乱れと伝熱特性

曲流通道内粘弹性流的湍流与传热特性

• 发表时间: 2011
• 作者: HEONG Chee Leong;横山崇朗;中島理;巽和也;中部主敬
• 通讯作者: 中部主敬

Flow and mixing characteristics of viscoelastic fluid flow in a serpentine microchannel-PIV and fluorescence intensity measurements-

蛇形微通道中粘弹性流体流动和混合特性-PIV和荧光强度测量-

• 发表时间: 2011
• 作者: T.Ikejima;O.Nakajima;Y.Takeda;K.Tatsumi;K.Nakabe
• 通讯作者: K.Nakabe

Turbulence characteristics and mixing performances of viscoelastic fluid flow in a serpentine microchannel

• DOI: 10.1088/1742-6596/318/9/092020
• 发表时间: 2011-01-01
• 期刊: 13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): REACTING, COMPRESSIBLE, MULTI-PHASE AND CRYOGENIC FLOWS
• 作者: Tatsumi, K.;Takeda, Y.;Nakabe, K.
• 通讯作者: Nakabe, K.

Numerical Investigation on Fluid Flow and Heat Transfer Characteristics in a Peristaltic Micro Pump

微型蠕动泵流体流动和传热特性的数值研究

• 发表时间: 2011
• 期刊: Progress in Computational Fluid Dynamics
• 影响因子: 0.7
• 作者: K. Tatsumi;R. Kuroki;M. Nakamura and K. Nakabe
• 通讯作者: M. Nakamura and K. Nakabe

Measurement on Flow and Heat Transfer Characteristics of Viscoelastic Fluid Flow in a Serpentine Channel

蛇形通道内粘弹性流体流动及传热特性的测量

• 发表时间: 2012
• 作者: O.Nakajima;K.Tatsumi;C.L.Heong;K.Nakabe
• 通讯作者: K.Nakabe