Kinetic Energy Dissipation on Labyrinth Configuration Stepped Spillway
In present work a labyrinth (zigzag), in shape has been used to configure the steps of stepped spillway by using the physical model. This configuration does not introduce previously by investigators or in construction techniques of dams or cascades. It would be expected to improve the flow over chut...
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Format: | Article |
Language: | English |
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Tikrit University
2016-09-01
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Series: | Tikrit Journal of Engineering Sciences |
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Online Access: | http://tj-es.com/vol23no3pa2/ |
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author | Jaafar S. Maatooq |
author_facet | Jaafar S. Maatooq |
author_sort | Jaafar S. Maatooq |
collection | DOAJ |
description | In present work a labyrinth (zigzag), in shape has been used to configure the steps of stepped spillway by using the physical model. This configuration does not introduce previously by investigators or in construction techniques of dams or cascades. It would be expected to improve the flow over chute. A magnifying the width path of each step to become, LT, instead of, W, will induce the interlocking between the mainstream and that spread laterally due to labyrinth path. This phenomenon leads to reduce the jet velocities near the surfaces, thus minimizing the ability of cavitation and with increasing a circulation regions the ability of air entrainment be maximized. The results were encouraging, (e.g., the reverse performance has recorded for spillway slope). From the evaluation of outcome, the average recorded of percentage profits of kinetic energy dissipation with a labyrinth shape compared with the results of traditional shape were ranged between (13- 44%). Different predictive formulas have been proposed based on iteration analysis, can be recommended for evaluation and design. |
first_indexed | 2024-03-12T05:32:48Z |
format | Article |
id | doaj.art-c5b78aff7466467d8881ded81f2c8bf7 |
institution | Directory Open Access Journal |
issn | 1813-162X |
language | English |
last_indexed | 2024-03-12T05:32:48Z |
publishDate | 2016-09-01 |
publisher | Tikrit University |
record_format | Article |
series | Tikrit Journal of Engineering Sciences |
spelling | doaj.art-c5b78aff7466467d8881ded81f2c8bf72023-09-03T06:44:40ZengTikrit UniversityTikrit Journal of Engineering Sciences1813-162X2016-09-012331224Kinetic Energy Dissipation on Labyrinth Configuration Stepped SpillwayJaafar S. Maatooq0Building and Construction Dept., University of Technology, IraqIn present work a labyrinth (zigzag), in shape has been used to configure the steps of stepped spillway by using the physical model. This configuration does not introduce previously by investigators or in construction techniques of dams or cascades. It would be expected to improve the flow over chute. A magnifying the width path of each step to become, LT, instead of, W, will induce the interlocking between the mainstream and that spread laterally due to labyrinth path. This phenomenon leads to reduce the jet velocities near the surfaces, thus minimizing the ability of cavitation and with increasing a circulation regions the ability of air entrainment be maximized. The results were encouraging, (e.g., the reverse performance has recorded for spillway slope). From the evaluation of outcome, the average recorded of percentage profits of kinetic energy dissipation with a labyrinth shape compared with the results of traditional shape were ranged between (13- 44%). Different predictive formulas have been proposed based on iteration analysis, can be recommended for evaluation and design.http://tj-es.com/vol23no3pa2/Stepped spillwaySkimming flowOverflow energy dissipationLabyrinth weirAir entrainment |
spellingShingle | Jaafar S. Maatooq Kinetic Energy Dissipation on Labyrinth Configuration Stepped Spillway Tikrit Journal of Engineering Sciences Stepped spillway Skimming flow Overflow energy dissipation Labyrinth weir Air entrainment |
title | Kinetic Energy Dissipation on Labyrinth Configuration Stepped Spillway |
title_full | Kinetic Energy Dissipation on Labyrinth Configuration Stepped Spillway |
title_fullStr | Kinetic Energy Dissipation on Labyrinth Configuration Stepped Spillway |
title_full_unstemmed | Kinetic Energy Dissipation on Labyrinth Configuration Stepped Spillway |
title_short | Kinetic Energy Dissipation on Labyrinth Configuration Stepped Spillway |
title_sort | kinetic energy dissipation on labyrinth configuration stepped spillway |
topic | Stepped spillway Skimming flow Overflow energy dissipation Labyrinth weir Air entrainment |
url | http://tj-es.com/vol23no3pa2/ |
work_keys_str_mv | AT jaafarsmaatooq kineticenergydissipationonlabyrinthconfigurationsteppedspillway |