Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow Water
Discharge of contaminants in the acceptor ambient has negative environmental impacts. Extremely shallow acceptor ambient conditions will have a significant impact on the diffusion of the contaminants flow. To achieve the effect of the hydraulic, geometric and environmental conditions of the contamin...
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| Format: | Article |
| Language: | fas |
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Isfahan University of Technology
2018-06-01
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| Series: | علوم آب و خاک |
| Subjects: | |
| Online Access: | http://jstnar.iut.ac.ir/article-1-3391-en.html |
| _version_ | 1818950542418771968 |
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| author | J. Ahadiyan B. Mardasi |
| author_facet | J. Ahadiyan B. Mardasi |
| author_sort | J. Ahadiyan |
| collection | DOAJ |
| description | Discharge of contaminants in the acceptor ambient has negative environmental impacts. Extremely shallow acceptor ambient conditions will have a significant impact on the diffusion of the contaminants flow. To achieve the effect of the hydraulic, geometric and environmental conditions of the contaminant flow in the acceptor ambient, an experimental model of surface draining was applied. The model consisted of a flume with 3.2 meters length, 0.6 meters width and 0.9 height. Accordingly, by considering three simple single drainers with the diameters of 1.2, 1.6 and 2.2 centimeters, a dense flow with 20, 40 and 60 g/L concentrations occurred in an acceptor ambient with H/d = 2. The results showed that equilibrium length was extremely decreased by increasing the concentrations; this was such that with increasing the concentration three times from 20 to 60 g/L, this length was decreased from 25 to 10. However, based on the results, it was found that the effect of the changes of the viscosity parameter over the relative length was significant, as its effect was high in all concentrations to 100; then it tended to become a constant value.. In this regard, the effect of changes in the surface tension parameters over the relative length was investigated; the results showed that this parameter was always effective in the extremely shallow acceptor ambient at all stages from the beginning to the end of the progress. It is important to note that this had a constant slope in all concentrations and surface tension had an effect on flow diffusion with a certain trend in all concentrations. In fact, surface tension in all concentrations reached to 5 after the equilibrium length and jet energy dissipation area. |
| first_indexed | 2024-12-20T09:20:15Z |
| format | Article |
| id | doaj.art-dfa51e4832f343938cde2202f87ec523 |
| institution | Directory Open Access Journal |
| issn | 2476-3594 2476-5554 |
| language | fas |
| last_indexed | 2024-12-20T09:20:15Z |
| publishDate | 2018-06-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | علوم آب و خاک |
| spelling | doaj.art-dfa51e4832f343938cde2202f87ec5232022-12-21T19:45:19ZfasIsfahan University of Technologyعلوم آب و خاک2476-35942476-55542018-06-01221157173Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow WaterJ. Ahadiyan0B. Mardasi1 1. Faculty of Water Sci. Eng., Shahid Chamran Univ. of Ahvaz, Iran. 1. Faculty of Water Sci. Eng., Shahid Chamran Univ. of Ahvaz, Iran. Discharge of contaminants in the acceptor ambient has negative environmental impacts. Extremely shallow acceptor ambient conditions will have a significant impact on the diffusion of the contaminants flow. To achieve the effect of the hydraulic, geometric and environmental conditions of the contaminant flow in the acceptor ambient, an experimental model of surface draining was applied. The model consisted of a flume with 3.2 meters length, 0.6 meters width and 0.9 height. Accordingly, by considering three simple single drainers with the diameters of 1.2, 1.6 and 2.2 centimeters, a dense flow with 20, 40 and 60 g/L concentrations occurred in an acceptor ambient with H/d = 2. The results showed that equilibrium length was extremely decreased by increasing the concentrations; this was such that with increasing the concentration three times from 20 to 60 g/L, this length was decreased from 25 to 10. However, based on the results, it was found that the effect of the changes of the viscosity parameter over the relative length was significant, as its effect was high in all concentrations to 100; then it tended to become a constant value.. In this regard, the effect of changes in the surface tension parameters over the relative length was investigated; the results showed that this parameter was always effective in the extremely shallow acceptor ambient at all stages from the beginning to the end of the progress. It is important to note that this had a constant slope in all concentrations and surface tension had an effect on flow diffusion with a certain trend in all concentrations. In fact, surface tension in all concentrations reached to 5 after the equilibrium length and jet energy dissipation area.http://jstnar.iut.ac.ir/article-1-3391-en.htmlcircular jetdiffusioninfinite shallow waterdensity surrounding. |
| spellingShingle | J. Ahadiyan B. Mardasi Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow Water علوم آب و خاک circular jet diffusion infinite shallow water density surrounding. |
| title | Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow Water |
| title_full | Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow Water |
| title_fullStr | Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow Water |
| title_full_unstemmed | Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow Water |
| title_short | Investigating the Discharge Conditions of the Circular Buoyant Co-flow Jet in the Infinitely Shallow Water |
| title_sort | investigating the discharge conditions of the circular buoyant co flow jet in the infinitely shallow water |
| topic | circular jet diffusion infinite shallow water density surrounding. |
| url | http://jstnar.iut.ac.ir/article-1-3391-en.html |
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