Abstract
The back pressure of a gas-liquid swirl ejector is a critical parameter that affects the flow regime and entrainment performance of the system. In the case of a weak swirl injection, the motive jet carries relatively higher axial momentum thus remains in a single phase and the liquids appear glassy. With increasing in the back pressure of the bubble flow, the suction rate drops rapidly. For a strong swirl injection, the liquid jet is disintegrated due to higher angular momentum and the spray is atomized. Augmentation in the back pressure also causes the reduction in the suction rate but it tends to grow more gradual than the weak swirl injection. As a result, the suction rate of the strong swirl is greater than that of the weak swirl in the majority of the back-pressure range. However, owing to the high transition pressure, only the weak swirl entrains the air in the bubble flow regime at low back pressure. The relationship between the suction and the swirl intensity is not fixed and is influenced by the back pressure.
| Original language | English |
|---|---|
| Article number | 20180264 |
| Journal | International Journal of Chemical Reactor Engineering |
| Volume | 17 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2019 Sep 1 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
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Effects of Back Pressure on Flow Regime and Suction Performance of Gas-Liquid Swirl Ejector. / Kim, Sang Hoon; Kim, Sang Min; Ko, Tae Ho; Kim, Hyung Min; Yoon, Jisang; Yoon, Woong Sup; Lee, Joonsang.
In: International Journal of Chemical Reactor Engineering, Vol. 17, No. 9, 20180264, 01.09.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effects of Back Pressure on Flow Regime and Suction Performance of Gas-Liquid Swirl Ejector
AU - Kim, Sang Hoon
AU - Kim, Sang Min
AU - Ko, Tae Ho
AU - Kim, Hyung Min
AU - Yoon, Jisang
AU - Yoon, Woong Sup
AU - Lee, Joonsang
PY - 2019/9/1
Y1 - 2019/9/1
N2 - The back pressure of a gas-liquid swirl ejector is a critical parameter that affects the flow regime and entrainment performance of the system. In the case of a weak swirl injection, the motive jet carries relatively higher axial momentum thus remains in a single phase and the liquids appear glassy. With increasing in the back pressure of the bubble flow, the suction rate drops rapidly. For a strong swirl injection, the liquid jet is disintegrated due to higher angular momentum and the spray is atomized. Augmentation in the back pressure also causes the reduction in the suction rate but it tends to grow more gradual than the weak swirl injection. As a result, the suction rate of the strong swirl is greater than that of the weak swirl in the majority of the back-pressure range. However, owing to the high transition pressure, only the weak swirl entrains the air in the bubble flow regime at low back pressure. The relationship between the suction and the swirl intensity is not fixed and is influenced by the back pressure.
AB - The back pressure of a gas-liquid swirl ejector is a critical parameter that affects the flow regime and entrainment performance of the system. In the case of a weak swirl injection, the motive jet carries relatively higher axial momentum thus remains in a single phase and the liquids appear glassy. With increasing in the back pressure of the bubble flow, the suction rate drops rapidly. For a strong swirl injection, the liquid jet is disintegrated due to higher angular momentum and the spray is atomized. Augmentation in the back pressure also causes the reduction in the suction rate but it tends to grow more gradual than the weak swirl injection. As a result, the suction rate of the strong swirl is greater than that of the weak swirl in the majority of the back-pressure range. However, owing to the high transition pressure, only the weak swirl entrains the air in the bubble flow regime at low back pressure. The relationship between the suction and the swirl intensity is not fixed and is influenced by the back pressure.
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UR - http://www.scopus.com/inward/citedby.url?scp=85065993626&partnerID=8YFLogxK
U2 - 10.1515/ijcre-2018-0264
DO - 10.1515/ijcre-2018-0264
M3 - Article
AN - SCOPUS:85065993626
VL - 17
JO - International Journal of Chemical Reactor Engineering
JF - International Journal of Chemical Reactor Engineering
SN - 1542-6580
IS - 9
M1 - 20180264
ER -