Journals / Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi / 2015 / Cilt: 30 - Sayı: 2

Numerical Modeling of Sloping Open Channel Flow Using Different Turbulence Closure Models

Eğimli Açık Kanal Akımının Farklı Türbülans Modelleri ile Sayısal Modellemesi

Pages
41–53
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Experimental validations of the turbulence models show that, Realizable k-? turbulence model, among using the other turbulence models, is in general the most successful one in predicting the velocity field and free surface profiles of the present flow case.

📌 3 Key Takeaways

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Objective & Hypothesis:The velocity field of sloping open channel flow is measured using Laser Doppler Anemometry (LDA).
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Key Findings & Data:Basic equations of the problem are solved by ANSYS-Fluent program package, using finite volume method, for the flow case having the same experimental conditions.
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Conclusion & Impact:Experimental validations of the turbulence models show that, Realizable k-? turbulence model, among using the other turbulence models, is in general the most successful one in predicting the velocity field and free surface profiles of the present flow case.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The velocity field of sloping open channel flow is measured using Laser Doppler Anemometry (LDA). Basic equations of the problem are solved by ANSYS-Fluent program package, using finite volume method, for the flow case having the same experimental conditions. In the numerical simulations, Standard k-?, Renormalization-group k-?, Realizable k-?, Modified k-? and Shear Stress Transport turbulence closure models are used, and the flow profile is computed using VOF method. Computational results for velocities and free surface profiles are compared with measured data. Experimental validations of the turbulence models show that, Realizable k-? turbulence model, among using the other turbulence models, is in general the most successful one in predicting the velocity field and free surface profiles of the present flow case.

Özet

Eğimli açık kanal akımının hız alanı, Lazer Doppler Anemometresi (LDA) ile ölçülmüş ve aynı deney koşullarındaki akımlar için, temel denklemler, sonlu hacimler yöntemine dayalı ANSYS-Fluent paket programı ile çözülmüştür. Sayısal hesaplamalarda, Standard k-?, Renormalization-group k-?, Realizable k-?, Modifiye k-? ve Shear Streess Transport türbülans kapatma modelleri kullanılmış, su yüzü profili VOF yöntemi ile hesaplanmıştır. Sayısal modellerden elde edilen akım hızları ve su yüzü profilleri deneysel ölçümlerle karşılaştırılmıştır. Farklı türbülans modellerinin deneysel olarak doğrulanması amacıyla yapılan karşılaştırmalarda, Renormalization-group k-? türbülans modelinin, hız alanının hesaplanmasında ve su yüzünün belirlenmesinde, kullanılan modeller arasında en başarılı olduğu görülmüştür

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Cite This Article

GÜMÜŞ, V., ŞİMŞEK, O. (2015). Numerical Modeling of Sloping Open Channel Flow Using Different Turbulence Closure Models. Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi, Cilt: 30 - Sayı: 2, 41–53. https://ajindex.com/articles/350634

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References (1)

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