Header Design for Flow Equalization in Microstructured Reactors
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
AIChE Journal
ISSN: 0001-1541
, E-ISSN: 1547-5905
|
| Вых. Данные |
Год: 2007,
Том: 53,
Номер: 1,
Страницы: 28-38
Страниц
: 11
DOI:
10.1002/aic.11043
|
| Ключевые слова |
CFD, Design, Flow maldistribution, Microreactor, Thick-walled screen |
| Авторы |
Rebrov Evgeny V.
1
,
Ismagilov Ilyas Z.
1,2
,
Ekatpure Rahul P.
1
,
De Croon Mart H.J.M.
1
,
Schouten Jaap C.
1
|
| Организации |
| 1 |
Eindhoven University of Technology
|
| 2 |
Институт катализа им. Г.К. Борескова СО РАН
|
|
Информация о финансировании (1)
|
1
|
Netherlands Organization for Scientific Research
|
047.015.007
|
To enhance the uniformity of fluid flow distribution in microreactors, a header configuration consisting of a cone diffuser connected to a thick-walled screen has been proposed. The thick-walled screen consists of two sections: the upstream section constitutes a set of elongated parallel upstream channels and the downstream section constitutes a set of elongated parallel downstream channels positioned at an angle of 90° with respect to the upstream channels. In this approach the problem of flow equalization reduces to that of flow equalization in the first and second downstream channels of the thick-walled screen. In turn, this requires flow equalization in the corresponding cross sections of the upstream channels. The computational fluid dynamics analysis of the fluid flow maldistribution shows that eight parallel upstream channels with a width of 300-600 um are required per 1 cm of length for flow equalization. The length to width ratio of these channels has to be >15. The numerical results suggest that the proposed header configuration can effectively improve the performance of the downstream microstructured devices, decreasing the ratio of the maximum flow velocity to the mean flow velocity from 2 to 1.005 for a wide range of Reynolds numbers (0.5-10).