Experimental study on the rise of aqueous foams in vertical pipes
In this paper we report experiments on the growth of dry foams and their rise in vertical pipes of different circular cross-sectional radii with length over diameter ratios in the interval 25 ≤ h/D ≤ 80 for applications in the study of fracture stimulation in enhanced oil recovery processes. Air inj...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-12-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2022.1081168/full |
| _version_ | 1828272045303005184 |
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| author | Valeriano S. Álvarez Salazar Leonardo Di G. Sigalotti Abraham Medina Ovando Ignacio Carvajal-Mariscal Jaime Klapp |
| author_facet | Valeriano S. Álvarez Salazar Leonardo Di G. Sigalotti Abraham Medina Ovando Ignacio Carvajal-Mariscal Jaime Klapp |
| author_sort | Valeriano S. Álvarez Salazar |
| collection | DOAJ |
| description | In this paper we report experiments on the growth of dry foams and their rise in vertical pipes of different circular cross-sectional radii with length over diameter ratios in the interval 25 ≤ h/D ≤ 80 for applications in the study of fracture stimulation in enhanced oil recovery processes. Air injection at the bottom of the pipes is performed at a constant flow rate by means of a single capillary tube. The formation and rising of the foam was investigated for two different cases: 1) when the top cap of the vertical pipes is open and 2) when it is closed. We find that the position and velocity of the foam front as well as the foam dispersivity are both dependent on the pipe diameter and on whether its top end is open or capped. When the top is open, the foam column grows faster compared to the case when it is sealed. In pipes with h/D ≥ 30, the growth rate is non-linear and faster than in pipes with h/D < 30 in which cases the foam rises at an almost constant rate. As the diameter of the pipe increases, the size of the produced bubbles also increases. In closed-top pipes the foams tend to be more homogeneous than in open top pipes. The experimental observations indicate that under foam drainage driven by gravity, the liquid flow velocity across the Plateau borders is indicative of a drainage model based on a plug-like flow in channels with fully mobile interfaces, where viscous dissipation occurs only in the nodes. |
| first_indexed | 2024-04-13T06:01:04Z |
| format | Article |
| id | doaj.art-1bc7876e0eee48cdac52b5b18cf14551 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-13T06:01:04Z |
| publishDate | 2022-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-1bc7876e0eee48cdac52b5b18cf145512022-12-22T02:59:26ZengFrontiers Media S.A.Frontiers in Physics2296-424X2022-12-011010.3389/fphy.2022.10811681081168Experimental study on the rise of aqueous foams in vertical pipesValeriano S. Álvarez Salazar0Leonardo Di G. Sigalotti1Abraham Medina Ovando2Ignacio Carvajal-Mariscal3Jaime Klapp4Departamento de Energía, Universidad Autónoma Metropolitana—Azcapotzalco (UAM-A), Mexico City, MexicoDepartamento de Ciencias Básicas, Universidad Autónoma Metropolita—Azcapotzalco (UAM-A), Mexico City, MexicoESIME-Azcapotzalco Instituto Politécnico Nacional (IPN), Mexico City, MexicoESIME UPALM Instituto Politécnico Nacional (IPN), Mexico City, MexicoDepartamento de Física, Instituto Nacional de Investigaciones Nucleares (ININ), La Marquesa, Ocoyoacac, Estado de México, MexicoIn this paper we report experiments on the growth of dry foams and their rise in vertical pipes of different circular cross-sectional radii with length over diameter ratios in the interval 25 ≤ h/D ≤ 80 for applications in the study of fracture stimulation in enhanced oil recovery processes. Air injection at the bottom of the pipes is performed at a constant flow rate by means of a single capillary tube. The formation and rising of the foam was investigated for two different cases: 1) when the top cap of the vertical pipes is open and 2) when it is closed. We find that the position and velocity of the foam front as well as the foam dispersivity are both dependent on the pipe diameter and on whether its top end is open or capped. When the top is open, the foam column grows faster compared to the case when it is sealed. In pipes with h/D ≥ 30, the growth rate is non-linear and faster than in pipes with h/D < 30 in which cases the foam rises at an almost constant rate. As the diameter of the pipe increases, the size of the produced bubbles also increases. In closed-top pipes the foams tend to be more homogeneous than in open top pipes. The experimental observations indicate that under foam drainage driven by gravity, the liquid flow velocity across the Plateau borders is indicative of a drainage model based on a plug-like flow in channels with fully mobile interfaces, where viscous dissipation occurs only in the nodes.https://www.frontiersin.org/articles/10.3389/fphy.2022.1081168/fullpneumatic foamsdry foamsbubblesgas-liquid interfacesfoam dispersivitycapillarity |
| spellingShingle | Valeriano S. Álvarez Salazar Leonardo Di G. Sigalotti Abraham Medina Ovando Ignacio Carvajal-Mariscal Jaime Klapp Experimental study on the rise of aqueous foams in vertical pipes Frontiers in Physics pneumatic foams dry foams bubbles gas-liquid interfaces foam dispersivity capillarity |
| title | Experimental study on the rise of aqueous foams in vertical pipes |
| title_full | Experimental study on the rise of aqueous foams in vertical pipes |
| title_fullStr | Experimental study on the rise of aqueous foams in vertical pipes |
| title_full_unstemmed | Experimental study on the rise of aqueous foams in vertical pipes |
| title_short | Experimental study on the rise of aqueous foams in vertical pipes |
| title_sort | experimental study on the rise of aqueous foams in vertical pipes |
| topic | pneumatic foams dry foams bubbles gas-liquid interfaces foam dispersivity capillarity |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2022.1081168/full |
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