Abstract
| Original language | English |
|---|---|
| Article number | 064202 |
| Pages (from-to) | 064202- |
| Number of pages | 20 |
| Journal | Physical review fluids |
| Volume | 1 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2016 |
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Keywords
- IR-103527
- METIS-320744
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History effects on the gas exchange between a bubble and a liquid. / Chu, Shigan; Prosperetti, Andrea.
In: Physical review fluids, Vol. 1, No. 6, 064202, 2016, p. 064202-.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - History effects on the gas exchange between a bubble and a liquid
AU - Chu, Shigan
AU - Prosperetti, Andrea
PY - 2016
Y1 - 2016
N2 - Diffusive processes exhibit a strong dependence on history effects. For a gas bubble at rest in a liquid, such effects arise when the concentration of dissolved gas at the bubble surface, dictated by Henry's law, depends on time. In this paper we consider several such situations. An oscillating ambient pressure field causes the occurrence of rectified diffusion of gas into or out of the bubble. Unlike previous investigators, who considered the opposite limit, we study this process for conditions when the diffusion length is larger than the bubble radius. It is found that history effects are important in determining the threshold conditions. Under a static ambient pressure, the time dependence of the gas concentration can arise due to the action of surface tension, which increases the gas pressure as the bubble dissolves or, when the bubble contains a mixture of two or more gases, due to the different rates at which they dissolve. In these latter cases history effects prove mostly negligible for bubbles larger than a few hundred nanometers.
AB - Diffusive processes exhibit a strong dependence on history effects. For a gas bubble at rest in a liquid, such effects arise when the concentration of dissolved gas at the bubble surface, dictated by Henry's law, depends on time. In this paper we consider several such situations. An oscillating ambient pressure field causes the occurrence of rectified diffusion of gas into or out of the bubble. Unlike previous investigators, who considered the opposite limit, we study this process for conditions when the diffusion length is larger than the bubble radius. It is found that history effects are important in determining the threshold conditions. Under a static ambient pressure, the time dependence of the gas concentration can arise due to the action of surface tension, which increases the gas pressure as the bubble dissolves or, when the bubble contains a mixture of two or more gases, due to the different rates at which they dissolve. In these latter cases history effects prove mostly negligible for bubbles larger than a few hundred nanometers.
KW - IR-103527
KW - METIS-320744
U2 - 10.1103/PhysRevFluids.1.064202
DO - 10.1103/PhysRevFluids.1.064202
M3 - Article
VL - 1
SP - 064202-
JO - Physical review fluids
JF - Physical review fluids
SN - 2469-990X
IS - 6
M1 - 064202
ER -