Drag on two nonuniformly structured flocs moving along the axis of a cylindrical tube

doi:10.1007/s00396-007-1644-6

淡江大學機構典藏 > 理學院 > 數學學系暨研究所 > 期刊論文 > Item 987654321/41684

請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/41684

題名:	Drag on two nonuniformly structured flocs moving along the axis of a cylindrical tube
作者:	Hsu, Jyh-ping;Yeh, Shu-jen;曾琇瑱;Tseng, Shio-jenn
貢獻者:	淡江大學數學學系
關鍵詞:	Drag on two flocs;Nonuniformly structured;Boundary effect;Flocs in cylindrical tube
日期:	2007-06-01
上傳時間:	2010-01-28
出版者:	Springer
摘要:	The boundary effect on the drag on two identical, nonuniformly structured flocs moving along the axis of a cylindrical tube filled with a Newtonian fluid is investigated at a small to medium larger Reynolds number. A two-layer model is adopted to simulate various possible structures of a floc, and the flow field inside is described by Darcy–Brinkman model. The results of numerical simulation reveal that a convective flow is present in the rear region of a floc when Reynolds number is on the order of 40. The presence of the tube wall and/or the porous structure of a floc has the effect of reducing that convective flow. For a fixed level of the volume-average permeability of a floc, the influence of the tube wall on the drag depends upon floc structure; the influence on a nonuniformly structured floc is more significant than that on a uniformly structured floc. The more nonuniform the floc structure, the more appreciable the deviation of the drag coefficient–Reynolds number curve from a Stokes’-law-like relation becomes. The smaller the volume-average permeability of a floc and/or the smaller the separation distance between the two flocs, the greater is the deviation, but the presence of the tube wall has the effect of reducing that deviation.
關聯:	Colloid Polymer Science 285(9), pp.985-998
DOI:	10.1007/s00396-007-1644-6
顯示於類別:	[數學學系暨研究所] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
		0Kb	Unknown	364	檢視/開啟
index.html		0Kb	HTML	109	檢視/開啟

在機構典藏中所有的資料項目都受到原著作權保護.

TAIR相關文章

資料載入中.....