Boulder-flow interaction associated with self-aeration process

In this experimental study, the boulder-flow interaction associated with the self-aeration process was investigated in a 0.50 m wide flume. Experiments were performed with three different boulder arrangements and four different relative boulder submergences using Reynolds numbers from 5 × 103 to 5 × 104. A boulder-flow interaction can trigger air-water mass transfer by generating turbulence, a hydraulic jump and plunging jet flow. When the boulders are submerged by the water, the maximum local aeration efficiency tends to decrease rapidly as does the flow resistance. Furthermore, the maximum local aeration efficiency is positively related to the blockage ratio of the boulder(s). The blockage ratio appears to represent the head loss, suggesting a possible interrelation between the aeration efficiency and the energy dissipation. © 2008 International Association of Hydraulic Engineering and Research.

Dergi Adı Journal of Hydraulic Research
Dergi Cilt Bilgisi 46
Dergi Sayısı 3
Sayfalar 415 - 419
Yayın Yılı 2008
Eser Adı
[dc.title]
Boulder-flow interaction associated with self-aeration process
Yazar
[dc.contributor.author]
Kucukali S.
Yazar
[dc.contributor.author]
Cokgor S.
Yayın Yılı
[dc.date.issued]
2008
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
In this experimental study, the boulder-flow interaction associated with the self-aeration process was investigated in a 0.50 m wide flume. Experiments were performed with three different boulder arrangements and four different relative boulder submergences using Reynolds numbers from 5 × 103 to 5 × 104. A boulder-flow interaction can trigger air-water mass transfer by generating turbulence, a hydraulic jump and plunging jet flow. When the boulders are submerged by the water, the maximum local aeration efficiency tends to decrease rapidly as does the flow resistance. Furthermore, the maximum local aeration efficiency is positively related to the blockage ratio of the boulder(s). The blockage ratio appears to represent the head loss, suggesting a possible interrelation between the aeration efficiency and the energy dissipation. © 2008 International Association of Hydraulic Engineering and Research.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Energy dissipation
Konu Başlıkları
[dc.subject]
Macro-roughness
Konu Başlıkları
[dc.subject]
Oxygen transfer
Konu Başlıkları
[dc.subject]
Self-aeration
Konu Başlıkları
[dc.subject]
Stream restoration
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
0022-1686
İlk Sayfa Sayısı
[dc.identifier.startpage]
415
Son Sayfa Sayısı
[dc.identifier.endpage]
419
Dergi Adı
[dc.relation.journal]
Journal of Hydraulic Research
Dergi Sayısı
[dc.identifier.issue]
3
Dergi Cilt Bilgisi
[dc.identifier.volume]
46
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.3826/jhr.2008.3105
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/4533
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
70
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
10 Haziran 2024 08:05
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Tıklayınız
efficiency aeration boulder different blockage boulder-flow interaction maximum resistance Furthermore positively rapidly decrease submerged related energy Research Engineering Hydraulic Association International dissipation between boulder(s) interrelation possible suggesting represent appears boulders generating performed Experiments investigated process
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