Flow and Heat Transfer Characteristics of Hydrophobic and Hydrophilic Microchannel Flow
疏水和亲水微通道流动的流动和传热特性
基本信息
- 批准号:16560174
- 负责人:
- 金额:$ 2.37万
- 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:2004
- 资助国家:日本
- 起止时间:2004 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Characteristics of single and two-phase flow in hydrophobic and hydrophilic microchannels were investigated in the laminar flow range. The hydrophobic microchannel was made by a glass tube coated with a silicone. Drag reduction did not occur in degassed tap water flowing in pipes with the smooth hydrophobic surface by measuring the pressure drop. Experiments in two-phase flow (nitrogen and tap water) were carried out to measure the total pressure drop and the flow pattern by using a microscope and a high-speed VTR system. For small liquid flow rate, total pressure drop in the hydrophobic microchannel was much higher as compared with the normal channel. That flow pattern was small liquid and gas segments flowing in the pipe without liquid film. The separation and adhesion of the liquid on the solid wall at both ends of liquid slug, caused larger drag than the slug flow with liquid film. Meanwhile, in the hydrophilic surface, a bursting of liquid film is expected to be hard to arise. The hydrophilic microchannel two-phase flow is more expectative for a drag reduction than the hydrophobic channel. However, it was too difficult to make a hard photocatalytic TiO_2 coating inside of a microchannel for a hydrophilic surface.
在层流范围内研究了疏水性和亲水性微通道中单相流和两相流的特性。疏水性微通道由涂有有机硅的玻璃管制成。通过测量压降,在具有光滑疏水表面的管道中流动的脱气自来水没有发生减阻。进行了两相流(氮气和自来水)实验,使用显微镜和高速 VTR 系统测量总压降和流型。对于小液体流量,疏水微通道中的总压降比正常通道高得多。该流动模式是小的液体和气体段在没有液膜的管道中流动。液塞流两端固体壁上的液体分离和粘附,产生比液膜段塞流更大的阻力。另一方面,在亲水性表面中,预计难以发生液膜破裂。亲水微通道两相流比疏水通道更有望实现减阻。然而,在微通道内部制备亲水表面的硬质光催化TiO_2涂层非常困难。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
SUZUKI Yuji其他文献
SUZUKI Yuji的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('SUZUKI Yuji', 18)}}的其他基金
Analyses on Environmental Behavior of Perfluorinated Compounds including Their Formation Potentials from Precursors
全氟化合物的环境行为包括前体形成潜力的分析
- 批准号:
16K21123 - 财政年份:2016
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Improvement of photosynthetic capacity by an enhancement of ATP synthesis in rice
通过增强水稻 ATP 合成来提高光合作用能力
- 批准号:
22780055 - 财政年份:2010
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Enhancement of Rubisco content of rice leaves by an overexpression of rbcS
通过 rbcS 的过度表达提高水稻叶片的 Rubisco 含量
- 批准号:
19780047 - 财政年份:2007
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
On Chemical Quenching Mechanisms in Microscale Combustion
微尺度燃烧中的化学淬火机理研究
- 批准号:
19360094 - 财政年份:2007
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Basic development research on seismic electret power generation system with micro combustion engine
微型内燃机地震驻极体发电系统基础开发研究
- 批准号:
17360092 - 财政年份:2005
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Research on carcinogenesis modifying factor by static magnetic field exposure
静磁场暴露致癌调节因子的研究
- 批准号:
16590486 - 财政年份:2004
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A new method for evaluation of neurotoxicological chemicals
神经毒理学化学物质评价的新方法
- 批准号:
13670344 - 财政年份:2001
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Basic Study on Active-Feedback Control of Non-Linear Heat and Fluid Flow
非线性热量和流体流动主动反馈控制的基础研究
- 批准号:
10555055 - 财政年份:1998
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
A NEW NEUROTOXICOLOGICAL TEST SYSTEM USING NERVE CELL LINE
使用神经细胞系的新型神经毒理学测试系统
- 批准号:
10670366 - 财政年份:1998
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of Microchannel Heat Exchanger for Refrigeration
制冷用微通道换热器的研制
- 批准号:
09555071 - 财政年份:1997
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (B)














{{item.name}}会员




