Publication: Birim Hidrograf İçin Doğrusal Hazne Serisi Modeli
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Hydraulics Engineerin
Hydraulics Engineerin
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Fen Bilimleri Enstitüsü
Institute of Science and Technology
Institute of Science and Technology
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Abstract
Bu çalışmada, Nash (1957) tarafından anlık birim hidrograf için önerilmiş olan doğrusal hazne serisi modeli, sonlu süreli ( t) birim hidrografa uygulanmıştır. Bu model ile bir akarsu havzasında artık yağıştan dolaysız akışa geçişin simülasyonu için bir çalışma yapılmış ve bilgisayar programı oluşturulmuştur. Model genel olarak her birinin depolama katsayısı K olan n adet doğrusal hazneden oluşmakta ve bir önceki hazneden çıkan akış bir sonraki haznenin girdisini oluşturmaktadır. Matematik modelin oluşturulmasının ardından Fortran programlama dili kullanılarak simülasyonun bilgisayar programı hazırlanmıştır. Çalışma sonucunda önerilen yöntemin geçerliliğinin araştırılması için çeşitli havzalarda gözlenen artık yağış değerleri ile simülasyon yapılmış ve havzada gözlenen akışlarla hesaplanan değerler karşılaştırılmıştır. Sonuçların karşılaştırılmasıyla yapılan bu çalışma sonrasında geliştirilen modelin yeterli doğrulukta sonuçlar verdiği görülmüştür.
In this study, linear reservoir model that was introduced by Nash (1957) was applied on the finite time unit hydrograph. The conversion of the excess rainfall into the direct runoff in the watershed was simulated using this model and the software was prepared. In this model there are a series of n linear reservoirs with storage constant K, the output of one being the input of the one immediately downstream. Mathematical model of the watershed was prepared, and then the algorithm was developed for this model. After that, the simulating software was written using Fortran programming language. In order to check the validity of this model, the software was run with observed data from real watersheds, and the results were compared with observed data. It was found that the linear reservoir model developed in this study gives results that are acceptable.
In this study, linear reservoir model that was introduced by Nash (1957) was applied on the finite time unit hydrograph. The conversion of the excess rainfall into the direct runoff in the watershed was simulated using this model and the software was prepared. In this model there are a series of n linear reservoirs with storage constant K, the output of one being the input of the one immediately downstream. Mathematical model of the watershed was prepared, and then the algorithm was developed for this model. After that, the simulating software was written using Fortran programming language. In order to check the validity of this model, the software was run with observed data from real watersheds, and the results were compared with observed data. It was found that the linear reservoir model developed in this study gives results that are acceptable.
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Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2002
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2002
Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2002
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İTÜ theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
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Birim hidrograf, Hazne serisi modeli, Nash, Simülasyon, Unit hydrograph, Linear reservoirs model, Nash, Simulation
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