ÜÇGEN ŞEKLİNDEKİ TAŞKIN HİDROGRAFINDAN KAYNAKLANAN TABAN MALZEMESİ TAŞINMASININ DENEYSEL ARAŞTIRILMASI
Öz
Bu çalışma kapsamında, DEÜ Hidrolik Laboratuvarında mevcut 18,6 m uzunluğundaki kanalda zamanla değişen akım rejiminde sürüntü maddesi hareketi incelenmiştir. Deneyler üçgen şeklindeki farklı giriş hidrografları kullanılarak ve membadan sürüntü maddesi beselemesi olmadan gerçekleştirilmiştir. Kanal tabanına D50= 4,8 mm, standart sapması gσ =1,4 mm olan üniform malzeme serilmiştir. Kanal mansabında bulunan sepetlerde toplanan malzeme tartılarak sürüntü maddesi yükü belirlenmiş ve bu değerler ‐literatürde verilen ampirik denklemlerin zamanla değişen akımlar için de uygulanabilir olduğu kabulüyle ‐ hesaplananlar ile karşılaştırılmıştır. Deneysel bulguların, konuyla ilgili literatürde yer alan denklemlerden Engelund ve Fredsoe (1976) tarafından verilen ampirik bağıntı ile daha çok uyumlu olduğu görülmüştür.
Anahtar Kelimeler
Açık kanal akımı Taban malzemesi hareketi Üçgen taşkın hidrografı.
Kaynakça
- Ashida, K., Michiue M. (1972). “Study on hydraulic resistance and bedload transport rate in alluvial streams”, Transactions, Japan Society of Civil Engineering, 206, 59‐69
- Bombar, G. (2009). “Experimental and numerical investigation of bed load transport in unsteady flows”, Dokuz Eylül Üniversitesi Fen Bilimleri Enstitüsü, Doktora Tezi, 152s
- DuBoys, M.P. (1879). “Le Rhone et les Rivieres a Lit affouillable”, Annales de Ponts et Chaussessec.5,Vol. 18, 141‐195
- Einstein, H.A. (1950). “The Bed Load Function for Sediment Transportation in Open Channel Flows”, Technical Bulletin no. 1026, U.S. Department of Agriculture, Washington, D.C.
- Engelund, F., Fredsoe, J. (1976). “A sediment transport model for straight alluvial channels”, Nordic Hydrology, 7, 293‐306.
- Fernandez Luque, R., van Beek, R. (1976). “Erosion and transport of bedload sediment”, Journal of Hydraulic Research, 14(2), 127‐144.
- Graf, H. (1971). “Hydraulics of sediment transport”, McGraw‐Hill Inc, ISBN 07‐023900‐2, USA, 513 s
- Met‐flow. (2002). UVP Monitor Model UVP‐DUO with Software Version 3, User’s Guide Meyer Peter, E., Müller, R. (1948). “Formulas for bed load transport” Report on second meeting of international association for Hydraulics Research, Stockholm, Sweden, 1948, 39‐64
- Özbek, T., Özcan, Ç. (2001). ʺAkarsularda Katı Maddeʺ, TMMOB, İnşaat Mühendisleri Odası, Ankara, 164 s
- Parker, G. (1979). “Hydraulic geometry of active gravel rivers”, Journal of Hydraulic Engineering, 105(9), 1185‐1201.
- Rottner, J. (1959). “A formula for bed load transportation”, La Houille Blanche, vol. 14 no 3, 285‐307
- Shields, A. (1936). “Anwendung der Aenlichkeitsmechanik und der Turbulenzforschung auf die Geschiebebewegung”, Mitteilungen der Preussischen Versuchsanstalt fur Wasserbau und Schiffbau, Berlin, Germany, translated to English by W.P.Ott and J.C. van Uchelen,California Institute of Techonolgy, Pasadena, Calif.,
- Simons D. B., Şentürk F. (1992). “Sediment Transport Technology”, Water Resources Publications, ISBN 0‐918334‐66‐7, USA, 897 s
- Vanoni, A.V. (2006). “Sedimentation Engineering”, ASCE Manulas and Reports on Engineering Practice No.54, ASCE, ISBN 0‐7844‐0823‐8, USA, 418 s
- Wong, M. (2003). “Does the bedload equation of Meyer‐Peter and Müller fit its own data”, Proceedings, 30th Congress, International Association of Hydraulic Research, Thessaloniki, J.F.K. Competition Volume: 73‐80
- Yang, C.T. (1996). “Sediment Transport”, McGraw‐Hill Series in Water Resources and Environmental Engineering, ISBN 0‐07‐114882‐5, Singapore, 396 s
Öz
In this study, experiments are carried out in the system designed and built in Hydraulics Laboratory of DEU, involving a rectangular flume of 18.6 m length in order to investigate the sediment transport in the cases of unsteady flow. The flume experiments are conducted using different triangular shaped input hydrographs without sediment feeding at upstream. The sediment median size D50 and the standard deviation gσ are 4.8 mm and 1.4 mm, respectively. The sediment is collected at the downstream end of the flume and weighed. The measured bed load values are compared with those calculated from the empirical relations given in the relevant literature for steady flow cases, assuming that they are also applicable in unsteady cases. It is found that the measured bed load values are better compatible with those calculated from the expression given by Engelund and Fredsoe (1976).
Anahtar Kelimeler
Open channel flow Bed material transport Triangular flood hydrograph.
Kaynakça
- Ashida, K., Michiue M. (1972). “Study on hydraulic resistance and bedload transport rate in alluvial streams”, Transactions, Japan Society of Civil Engineering, 206, 59‐69
- Bombar, G. (2009). “Experimental and numerical investigation of bed load transport in unsteady flows”, Dokuz Eylül Üniversitesi Fen Bilimleri Enstitüsü, Doktora Tezi, 152s
- DuBoys, M.P. (1879). “Le Rhone et les Rivieres a Lit affouillable”, Annales de Ponts et Chaussessec.5,Vol. 18, 141‐195
- Einstein, H.A. (1950). “The Bed Load Function for Sediment Transportation in Open Channel Flows”, Technical Bulletin no. 1026, U.S. Department of Agriculture, Washington, D.C.
- Engelund, F., Fredsoe, J. (1976). “A sediment transport model for straight alluvial channels”, Nordic Hydrology, 7, 293‐306.
- Fernandez Luque, R., van Beek, R. (1976). “Erosion and transport of bedload sediment”, Journal of Hydraulic Research, 14(2), 127‐144.
- Graf, H. (1971). “Hydraulics of sediment transport”, McGraw‐Hill Inc, ISBN 07‐023900‐2, USA, 513 s
- Met‐flow. (2002). UVP Monitor Model UVP‐DUO with Software Version 3, User’s Guide Meyer Peter, E., Müller, R. (1948). “Formulas for bed load transport” Report on second meeting of international association for Hydraulics Research, Stockholm, Sweden, 1948, 39‐64
- Özbek, T., Özcan, Ç. (2001). ʺAkarsularda Katı Maddeʺ, TMMOB, İnşaat Mühendisleri Odası, Ankara, 164 s
- Parker, G. (1979). “Hydraulic geometry of active gravel rivers”, Journal of Hydraulic Engineering, 105(9), 1185‐1201.
- Rottner, J. (1959). “A formula for bed load transportation”, La Houille Blanche, vol. 14 no 3, 285‐307
- Shields, A. (1936). “Anwendung der Aenlichkeitsmechanik und der Turbulenzforschung auf die Geschiebebewegung”, Mitteilungen der Preussischen Versuchsanstalt fur Wasserbau und Schiffbau, Berlin, Germany, translated to English by W.P.Ott and J.C. van Uchelen,California Institute of Techonolgy, Pasadena, Calif.,
- Simons D. B., Şentürk F. (1992). “Sediment Transport Technology”, Water Resources Publications, ISBN 0‐918334‐66‐7, USA, 897 s
- Vanoni, A.V. (2006). “Sedimentation Engineering”, ASCE Manulas and Reports on Engineering Practice No.54, ASCE, ISBN 0‐7844‐0823‐8, USA, 418 s
- Wong, M. (2003). “Does the bedload equation of Meyer‐Peter and Müller fit its own data”, Proceedings, 30th Congress, International Association of Hydraulic Research, Thessaloniki, J.F.K. Competition Volume: 73‐80
- Yang, C.T. (1996). “Sediment Transport”, McGraw‐Hill Series in Water Resources and Environmental Engineering, ISBN 0‐07‐114882‐5, Singapore, 396 s
Ayrıntılar
| Diğer ID | JA47HS34BK |
|---|---|
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 1 Mart 2009 |
| Yayımlandığı Sayı | Yıl 2009 Cilt: 24 Sayı: 1 |