| Item Type |
Article |
| ID |
|
| Preview |
| Image |
|
| Caption |
|
|
| Full text |
KAKEN_17K14610seika.pdf
| Type |
:application/pdf |
Download
|
| Size |
:711.9 KB
|
| Last updated |
:Mar 5, 2021 |
| Downloads |
: 556 |
Total downloads since Mar 5, 2021 : 556
|
|
| Release Date |
|
| Title |
| Title |
界面活性剤分子の自己集合によるトムズ効果メカニズムの分子論的解明
|
| Kana |
カイメン カッセイザイ ブンシ ノ ジコ シュウゴウ ニ ヨル トムズ コウカ メカニズム ノ ブンシロンテキ カイメイ
|
| Romanization |
Kaimen kasseizai bunshi no jiko shūgō ni yoru Tomuzu kōka mekanizumu no bunshironteki kaimei
|
|
| Other Title |
| Title |
Molecular mechanism of Tom's effect by self-assembly of surfactant molecules
|
| Kana |
|
| Romanization |
|
|
| Creator |
| Name |
荒井, 規允
 |
| Kana |
アライ, ノリヨシ
|
| Romanization |
Arai, Noriyoshi
|
| Affiliation |
慶應義塾大学・理工学部 (矢上) ・准教授
|
| Affiliation (Translated) |
|
| Role |
Research team head
|
| Link |
科研費研究者番号 : 80548363
|
|
| Edition |
|
| Place |
|
| Publisher |
|
| Date |
| Issued (from:yyyy) |
2020
|
| Issued (to:yyyy) |
|
| Created (yyyy-mm-dd) |
|
| Updated (yyyy-mm-dd) |
|
| Captured (yyyy-mm-dd) |
|
|
| Physical description |
|
| Source Title |
| Name |
科学研究費補助金研究成果報告書
|
| Name (Translated) |
|
| Volume |
|
| Issue |
|
| Year |
2019
|
| Month |
|
| Start page |
|
| End page |
|
|
| ISSN |
|
| ISBN |
|
| DOI |
|
| URI |
|
| JaLCDOI |
|
| NII Article ID |
|
| Ichushi ID |
|
| Other ID |
|
| Doctoral dissertation |
| Dissertation Number |
|
| Date of granted |
|
| Degree name |
|
| Degree grantor |
|
|
| Abstract |
トムズ効果の分子論的なメカニズムを調べるため，分子シミュレーションを用いて，円管流れ下における界面活性剤水溶液の挙動を再現，解析を行った．管の内壁が親水的な性質の場合，界面活性剤の濃度にかかわらずシアーシニングが観察され，一方，疎水的な性質の場合ニュートン流体のような振る舞いとシアーシックニングが観察されることを示した．さらに管径を広げ，乱流領域および層流から乱流への遷移領域における界面活性剤水溶液の振る舞いを再現した．棒状ミセルが管の中心付近に集まったようなせん断誘起構造が観察され，その変化が抵抗低減に影響を与えていることが示唆された．
To investigate the molecular mechanism of the Toms effect, coarse-grained molecular simulations were performed to reproduce the behavior of surfactant aqueous solutions in a tube flow. When the hydrophilic wall of the tube, shear thinning is observed regardless of the concentration of the surfactants, whereas in the hydrophobic tube, Newtonian fluid-like behavior and shear thickening are observed. The tube diameter was extended to reproduce the behavior of the surfactant solution in the turbulent and laminar-to-turbulence transition regions. A shear-induced structure, in which rod-like micelles clustered near the center of the tube, was observed, suggesting that the change in the structure affected the drag reduction.
|
|
| Table of contents |
|
| Keyword |
|
| NDC |
|
| Note |
研究種目 : 若手研究 (B)
研究期間 : 2017～2019
課題番号 : 17K14610
研究分野 : 分子シミュレーション
|
|
| Language |
|
| Type of resource |
|
| Genre |
|
| Text version |
|
| Related DOI |
|
| Access conditions |
|
| Last modified date |
|
| Creation date |
|
| Registerd by |
|
| History |
|
| Index |
|
| Related to |
|
