
TY  - JOUR
A1  - Sahoo, Goloka Behari 
A1  - Luketina, David 
T1  - Bubbler design for reservoir destratification
JF  - Marine and Freshwater Research
JO  - Mar. Freshwater Res.
Y1  - 2003
VL  - 54
IS  - 3
SP  - 271
EP  - 285
KW  - gas transfer, mechanical efficiency, thermal stratification, water quality.
UR  - https://doi.org/10.1071/MF02045 
N2  - Two important bubbler-performance criteria, the mechanical efficiency, &#951;mech, and the destratification time, &#915;, were analysed as functions of two dimensionless parameters, G, the strength of stratification, and M, the source strength. Equations to estimate the optimum airflow rate (via M) and corresponding &#951;mech and &#915; for a known linear stratification G in a reservoir were derived. Owing to difficulties in accurately determining the actual G, it was demonstrated that it is appropriate practice to reduce the design G value by around 10%. It was shown that the equivalent linear stratification method might lead to sub-optimal design for stratification profiles that deviate substantially from a linear profile. Rather, a bubble-plume model should be applied. Finally, the effects of incorporating changes in bubble radius in a bubble-plume model were examined. &#951;mech and &#915; were found to be relatively insensitive to bubble radius; however, the ideal bubble size for maintaining a suitable oxygen dissolution efficiency is 1 mm. 
ER  -

