Research Article
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Numerical Modeling of Circular Weirs with Harmonic Plan View

Year 2024, , 28 - 35, 26.04.2024
https://doi.org/10.5281/zenodo.11068954

Abstract

Dams and reservoirs in use need to be revised to be considered safe. If the flood control is very important for existing reservoirs in terms of safety standards, the most effective way to increase reservoir capacity in a situation where maximum water levels are limited is to build labyrinth weirs on top of the dam. In labyrinth weirs, the collision of two nappe flows causes nappe interference, which reduces weir discharge performance. In this study, numerical modeling of labyrinth weirs obtained by placing semicircular weirs in a harmonic plan, which prevents the formation of nappe interference, increases the flow capacity and ensures that the flow reaches the weir walls at a steeper angle, was made in order to increase the efficiency of the labyrinth weirs. In the numerical modeling of harmonically placed circular weirs, three different weir heights (P = 0.2, 0.3 and 0.4 m) and three different cycle numbers, N = 2, 3 and 4, were used. The discharge values and total heads obtained from the experiments and the numerical model were compared.

References

  • U.S. Bureau of Reclamation, “Design of small dams”, Washington, D.C., 1977.
  • Tingey, S.E., “Discharge Coefficients of Oblique Weirs”, Yüksek Lisans Tezi, Utah State University, 2011.
  • Amanian, N., “Performance and Design of Labyrinth Spillway”, Yüksek Lisans Tezi, Utah State University, 1987.
  • Reese, A.J., Maynord, S.T., “Design of Spillway Crests”, Journal of Hydraulic Engineering, Cilt 1987, Sayı 113, Sayfa 476–90, 1987.
  • ICOLD. Dam failures statistical analysis. ICOLD - Central Office; 1995.
  • Wormleaton, P.R., Tsang, C.C., “Aeration Performance of Rectangular Planform Labyrinth Weirs”, Journal of Environmental Engineering, Cilt 126, Sayı 5, Sayfa 456, 2000.
  • Gentilini, B., “Stramazzi con cresta a pianta obli-qua e zigzag”, Memorie e Studi Del Regio Politecnico Di Milano, Cilt 48, Sayfa 1–12, 1940.
  • Taylor, G., “The performance of labyrinth weirs”, Doktora Tezi, University of Nottingham, 1968.
  • Lux, F., “Design and application of labyrinth weirs”, Design of Hydraulic Structures, 205–2017, Albertson & Kia (eds), Colorado, 1989.
  • Hay, N., Taylor, G., “Performance and Design of Labyrinth Weirs”, Journal of the Hydraulics Division, Cilt 96, Sayfa 2337–57, 1970.
  • Tullis, J.P., Amanian, N., Waldron, D., “Design of Labyrinth Spillways”, Journal of Hydraulic Engineering, Cilt 121, Sayı 3, Sayfa 247, 1995.
  • Yildiz, A., Marti, A.I., Gogus, M., “Determination of hydraulic characteristics of flow over a triangular sectioned weir by using experimental and numerical modeling”, Journal of Computational Applied Mechanics, Cilt 52, Sayı 2, Sayfa 215-232, 2021.
  • Yildiz, A., Marti, A.İ., Göğüş, M., “Farklı savak yüksekliğine ve konfigürasyona sahip dairesel labirent savakların deneysel modellenmesi”, Gümüşhane Üniversitesi Fen Bilimleri Dergisi, Cilt 13, Sayı 2, Sayfa 373-385, 2023.
  • Bilhan, O., Emiroğlu, M.E., “Experimental Studies on Determination of Discharge Capacity of Circular Labyrinth Weirs Located on A Straight Channel”, International Journal of Electronics, Mechanical and Mechatronics Engineering, Cilt 6, Sayı 3, Sayfa 1227–39, 2016.
  • Bilhan, O., Emiroglu, M.E., Miller, C.J., “Experimental Investigation of Discharge Capacity of Labyrinth Weirs with and without Nappe Breakers”, World Journal of Mechanics, Cilt 6, Sayı 7, Sayfa 207-221 2016.
  • Bilhan, O., Aydin, M.C., Emiroglu, M.E., Miller, C.J., “Experimental and CFD Analysis of Circular Labyrinth Weirs”, Journal of Irrigation and Drainage Engineering, Cilt 144, Sayı 6, 2018.
  • Haghiabi, A.H., Ghaleh, Nou, M.R., Parsaie, A., “The energy dissipation of flow over the labyrinth weirs”, Alexandria Engineering Journal, Cilt 61, Sayı 5, Sayfa 3729-3733, 2022.
  • Zare, H., Vaghefi, M., Mahmoudi, A., Behroozi, A.M., “Experimental Exploration of Flow Hydraulics and Discharge Coefficient for an Inclined Circular Labyrinth Weir”, Water Resources Management, Cilt 37, Sayfa 4521-4536 2023.
  • Khalili, M., Honar, T., “Discharge coefficient of semi-circular labyrinth side weir in subcritical flow”, Water SA, Cilt 43, Sayı 3, Sayfa 433-441, 2017.
  • Crookston, B.M., “Labyrinth Weirs”, Doktora Tezi, Utah State University, Utah, 2010.
  • Yıldız, A., Marti, A.İ., Göğüş, M., “The hydraulic investigation of harmonic plan weirs”, Flow Measurement and Instrumentation, Cilt 95, Sayı 102512, 2024.
  • Falvey, H.T., “Hydraulic Design of Labyrinth Weirs” 1–160, ASCE, Reston, 2002.
  • Crookston, B.M., Tullis, B.P., “Hydraulic Design and Analysis of Labyrinth Weirs. I: Discharge Relationships”, Journal of Irrigation and Drainage Engineering, Cilt 139, Sayı 139, Sayfa 363-370, 2012.

Harmonik Plan Görünümüne Sahip Dairesel Savakların Nümerik Modellenmesi

Year 2024, , 28 - 35, 26.04.2024
https://doi.org/10.5281/zenodo.11068954

Abstract

Kullanımda olan barajların ve rezervuarların güvenli kabul edilebilmeleri için revize edilmeleri gerekmektedir. Mevcut rezervuarlar için taşkın kontrolü güvenlik standartları açıcından çok önemliyken, aynı zamanda maksimum su seviyelerinin sınırlı olduğu bir ortamda rezervuar kapasitesini arttırmanın en etkili yolu, barajın üstüne labirent savaklar inşa etmektir. Labirent savaklarda, iki nap akımının çarpışması nap girişimine neden olur ve bu da savak performansını azaltır. Bu çalışmada, labirent savakların verimliliğini arttırmak amacıyla nap girişiminin oluşmasını engellemek, akım kapasitesini arttırmak ve akımın savak duvarlarına daha dik açı ile gelmesini sağlayan yarım daire savakların harmonik planda yerleştirilmesiyle elde edilen labirent savakların nümerik modellemesi yapılmıştır. Harmonik olarak yerleştirilen dairesel savakların nümerik modellenmesinde üç farklı savak yüksekliği (P=0.2, 0.3 ve 0.4 m) ve N=2,3 ve 4 olmak üzere üç farklı döngü sayısı kullanılmıştır. Deneylerde ve nümerik modelden elde edilen debi ve savak yükleri karşılaştırılmıştır.

References

  • U.S. Bureau of Reclamation, “Design of small dams”, Washington, D.C., 1977.
  • Tingey, S.E., “Discharge Coefficients of Oblique Weirs”, Yüksek Lisans Tezi, Utah State University, 2011.
  • Amanian, N., “Performance and Design of Labyrinth Spillway”, Yüksek Lisans Tezi, Utah State University, 1987.
  • Reese, A.J., Maynord, S.T., “Design of Spillway Crests”, Journal of Hydraulic Engineering, Cilt 1987, Sayı 113, Sayfa 476–90, 1987.
  • ICOLD. Dam failures statistical analysis. ICOLD - Central Office; 1995.
  • Wormleaton, P.R., Tsang, C.C., “Aeration Performance of Rectangular Planform Labyrinth Weirs”, Journal of Environmental Engineering, Cilt 126, Sayı 5, Sayfa 456, 2000.
  • Gentilini, B., “Stramazzi con cresta a pianta obli-qua e zigzag”, Memorie e Studi Del Regio Politecnico Di Milano, Cilt 48, Sayfa 1–12, 1940.
  • Taylor, G., “The performance of labyrinth weirs”, Doktora Tezi, University of Nottingham, 1968.
  • Lux, F., “Design and application of labyrinth weirs”, Design of Hydraulic Structures, 205–2017, Albertson & Kia (eds), Colorado, 1989.
  • Hay, N., Taylor, G., “Performance and Design of Labyrinth Weirs”, Journal of the Hydraulics Division, Cilt 96, Sayfa 2337–57, 1970.
  • Tullis, J.P., Amanian, N., Waldron, D., “Design of Labyrinth Spillways”, Journal of Hydraulic Engineering, Cilt 121, Sayı 3, Sayfa 247, 1995.
  • Yildiz, A., Marti, A.I., Gogus, M., “Determination of hydraulic characteristics of flow over a triangular sectioned weir by using experimental and numerical modeling”, Journal of Computational Applied Mechanics, Cilt 52, Sayı 2, Sayfa 215-232, 2021.
  • Yildiz, A., Marti, A.İ., Göğüş, M., “Farklı savak yüksekliğine ve konfigürasyona sahip dairesel labirent savakların deneysel modellenmesi”, Gümüşhane Üniversitesi Fen Bilimleri Dergisi, Cilt 13, Sayı 2, Sayfa 373-385, 2023.
  • Bilhan, O., Emiroğlu, M.E., “Experimental Studies on Determination of Discharge Capacity of Circular Labyrinth Weirs Located on A Straight Channel”, International Journal of Electronics, Mechanical and Mechatronics Engineering, Cilt 6, Sayı 3, Sayfa 1227–39, 2016.
  • Bilhan, O., Emiroglu, M.E., Miller, C.J., “Experimental Investigation of Discharge Capacity of Labyrinth Weirs with and without Nappe Breakers”, World Journal of Mechanics, Cilt 6, Sayı 7, Sayfa 207-221 2016.
  • Bilhan, O., Aydin, M.C., Emiroglu, M.E., Miller, C.J., “Experimental and CFD Analysis of Circular Labyrinth Weirs”, Journal of Irrigation and Drainage Engineering, Cilt 144, Sayı 6, 2018.
  • Haghiabi, A.H., Ghaleh, Nou, M.R., Parsaie, A., “The energy dissipation of flow over the labyrinth weirs”, Alexandria Engineering Journal, Cilt 61, Sayı 5, Sayfa 3729-3733, 2022.
  • Zare, H., Vaghefi, M., Mahmoudi, A., Behroozi, A.M., “Experimental Exploration of Flow Hydraulics and Discharge Coefficient for an Inclined Circular Labyrinth Weir”, Water Resources Management, Cilt 37, Sayfa 4521-4536 2023.
  • Khalili, M., Honar, T., “Discharge coefficient of semi-circular labyrinth side weir in subcritical flow”, Water SA, Cilt 43, Sayı 3, Sayfa 433-441, 2017.
  • Crookston, B.M., “Labyrinth Weirs”, Doktora Tezi, Utah State University, Utah, 2010.
  • Yıldız, A., Marti, A.İ., Göğüş, M., “The hydraulic investigation of harmonic plan weirs”, Flow Measurement and Instrumentation, Cilt 95, Sayı 102512, 2024.
  • Falvey, H.T., “Hydraulic Design of Labyrinth Weirs” 1–160, ASCE, Reston, 2002.
  • Crookston, B.M., Tullis, B.P., “Hydraulic Design and Analysis of Labyrinth Weirs. I: Discharge Relationships”, Journal of Irrigation and Drainage Engineering, Cilt 139, Sayı 139, Sayfa 363-370, 2012.
There are 23 citations in total.

Details

Primary Language Turkish
Subjects Hydromechanics, Water Resources and Water Structures
Journal Section Research Article
Authors

Ali Yıldız 0000-0002-6909-6114

Ali İhsan Martı 0000-0003-3440-6052

Mustafa Göğüş 0000-0002-7723-5954

Publication Date April 26, 2024
Submission Date March 8, 2024
Acceptance Date April 23, 2024
Published in Issue Year 2024

Cite

APA Yıldız, A., Martı, A. İ., & Göğüş, M. (2024). Harmonik Plan Görünümüne Sahip Dairesel Savakların Nümerik Modellenmesi. Hendese Teknik Bilimler Ve Mühendislik Dergisi, 1(1), 28-35. https://doi.org/10.5281/zenodo.11068954