氣力揚升法應用於人工湧升流之研究(II)
Date Issued
1999
Date
1999
Author(s)
梁乃匡
DOI
882611E002022
Abstract
The authors have studied the hydrodynamics of an air-liquid two-phase flow, which can upwell
a huge amount of deep seawater rich in nutrients to the sea surface to generate high primary
productivity. The preliminary study was promising and the upwelling efficiency was very high
(1997,1998). However, the further study shows that the result between experiment and air-lift theory
is not identical. It means there exist new factors to be considered. The factors include distribution of
slip velocity, level raise due to surface tension and density decrease of air-water mixture, and depth of
outlet. A formula of air-lift artificial upwelling is deduced by the aforementioned factors and
stratification effect. By employing the formula, an estimate of 1cms upwelled seawater from 110M to
10M in depth below sea level can be induced by an air flow-rate of 0.011cms through a pipe of 2M in
diameter and 100M in length. The application of air-lift artificial upwelling is in great potential.
Subjects
primary productivity
air-lift
artificial upwelling
Publisher
臺北市：國立臺灣大學海洋研究所
Type
report
File(s)![Thumbnail Image]()
Loading...
Name
882611E002022.pdf
Size
62.55 KB
Format
Adobe PDF
Checksum
(MD5):6a74143961349c827a673fc71c4137af