Experimental and Numerical Investigation of the Position of Hydraulic Jump Formed by Flow Passing Under the Sluice Gate

Ali Yıldız

Makale detayları

Experimental and Numerical Investigation of the Position of Hydraulic Jump Formed by Flow Passing Under the Sluice Gate

Yazarlar:

Ali Yıldız

Yayıncı:

Karyay Karadeniz Yayımcılık

Ana Başlıklar:

Hidromekanik | Su Kaynakları Mühendisliği | Su Kaynakları ve Su Yapıları

Dergi:

Black Sea Journal of Engineering and Science Vol.7 Issue 5, pp.988-1000

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001324892

pISSN:

2619-8991

Anahtar kelimeler:

Özet:

 Sluice gates control the water level in the reservoir and transfer the excessive water above the reservoir capacity to the downstream side in a controlled manner with a certain discharge. The flow passing under a sluice gate can be in free or submerged flow conditions. In the case of free flow, when the flow regime is changed from subcritical to supercritical, hydraulic jump occurs after the gate. The location of the hydraulic jump must be known to prevent the damage caused by the hydraulic jump to hydraulic structures and the channel. In this study, a sluice gate and a linear weir were used to create a hydraulic jump in the rectangular open channel system. The relation of the position of the hydraulic jump with discharge and gate opening was examined. Two different gate openings e1  2.5 cm and e2  5 cm were used in the experiments and experiments were carried out for 34 different discharge values. It has been observed that the hydraulic jump position changes linearly with the discharge. In addition, 2-dimensional numerical models of the physical experimental setups were created, and the hydraulic jump positions and flow depths obtained from the experiments were compared with the numerical models. According to the results obtained from numerical model and physical model showed a consistency of 92.22 for e1  2.5 cm gate opening and 95.69 for e2  5 cm gate openings.

 Sluice gates control the water level in the reservoir and transfer the excessive water above the reservoir capacity to the downstream side in a controlled manner with a certain discharge. The flow passing under a sluice gate can be in free or submerged flow conditions. In the case of free flow, when the flow regime is changed from subcritical to supercritical, hydraulic jump occurs after the gate. The location of the hydraulic jump must be known to prevent the damage caused by the hydraulic jump to hydraulic structures and the channel. In this study, a sluice gate and a linear weir were used to create a hydraulic jump in the rectangular open channel system. The relation of the position of the hydraulic jump with discharge and gate opening was examined. Two different gate openings e1  2.5 cm and e2  5 cm were used in the experiments and experiments were carried out for 34 different discharge values. It has been observed that the hydraulic jump position changes linearly with the discharge. In addition, 2-dimensional numerical models of the physical experimental setups were created, and the hydraulic jump positions and flow depths obtained from the experiments were compared with the numerical models. According to the results obtained from numerical model and physical model showed a consistency of 92.22 for e1  2.5 cm gate opening and 95.69 for e2  5 cm gate openings.

 Sluice gates control the water level in the reservoir and transfer the excessive water above the reservoir capacity to the downstream side in a controlled manner with a certain discharge. The flow passing under a sluice gate can be in free or submerged flow conditions. In the case of free flow, when the flow regime is changed from subcritical to supercritical, hydraulic jump occurs after the gate. The location of the hydraulic jump must be known to prevent the damage caused by the hydraulic jump to hydraulic structures and the channel. In this study, a sluice gate and a linear weir were used to create a hydraulic jump in the rectangular open channel system. The relation of the position of the hydraulic jump with discharge and gate opening was examined. Two different gate openings e1  2.5 cm and e2  5 cm were used in the experiments and experiments were carried out for 34 different discharge values. It has been observed that the hydraulic jump position changes linearly with the discharge. In addition, 2-dimensional numerical models of the physical experimental setups were created, and the hydraulic jump positions and flow depths obtained from the experiments were compared with the numerical models. According to the results obtained from numerical model and physical model showed a consistency of 92.22 for e1  2.5 cm gate opening and 95.69 for e2  5 cm gate openings.

 Bent kapakları, rezervuardaki su seviyesini kontrol edilmesini ve kapasitenin üzerindeki fazla suyun belli bir debi ile kontrollü bir şekilde mansap tarafına aktarılmasını sağlarlar. Bir bent kapağının altından geçen akım, serbest veya batmış akım durumda olabilir. Serbest akım durumunda kapak altından sel rejimiyle çıkan akım, nehir rejimine geçişinde, kapak sonrasında bir hidrolik sıçrama meydana getirir. Oluşan hidrolik sıçramanın, etraftaki yapılara ve bulunduğu kanala zarar vermemesi için hidrolik sıçrama konumunun tam olarak bilinmesi gerekmektedir. Bu çalışmada dikdörtgen kesite sahip bir açık kanal sisteminde, hidrolik sıçrama oluşturmak için bent kapağı ve doğrusal savak kullanılmıştır. Oluşan hidrolik sıçramanın konumunun, debi ve kapak açıklığı ile değişimi incelenmiştir. Deneylerde iki farklı kapak açıklığı e1 2,5 cm ve e2 5 cm kullanılmış ve 34 farklı debi değeri için deneyler yapılmıştır. Hidrolik sıçrama konumunun kapak açıklığına bağlı olarak farklı oranlarda, debi ile lineer değişim gösterdiği görülmüştür. Ayrıca fiziksel deney düzeneklerinin, 2-boyutlu nümerik modelleri oluşturulmuş ve deneylerden elde edilen hidrolik sıçrama konumları ve akım derinlikleri, nümerik modeller ile karşılaştırılmıştır. Elde edilen sonuçlara göre nümerik model ile fiziksel model, e2,5 cm kapak açıklığı için 92,22 ve e5 cm kapak açıklığı için 95,69 oranında tutarlılık göstermişlerdir.

Makale detayları

Experimental and Numerical Investigation of the Position of Hydraulic Jump Formed by Flow Passing Under the Sluice Gate

Yazarlar:

Ali Yıldız

Yayıncı:

Karyay Karadeniz Yayımcılık

Ana Başlıklar:

Hidromekanik | Su Kaynakları Mühendisliği | Su Kaynakları ve Su Yapıları

Dergi:

Black Sea Journal of Engineering and Science Vol.7 Issue 5, pp.988-1000

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001324892

pISSN:

2619-8991

Sluice gate

Fluent

Computational fluid dynamics

Free hydraulic jumpBent kapakları

Fluent

Hesaplamalı akışkanlar dinamiği

Serbest hidrolik sıçrama

Sayı

Makale detayları

Yazarlar: Ali Yıldız

Yayıncı: Karyay Karadeniz Yayımcılık

Ana Başlıklar: Hidromekanik | Su Kaynakları Mühendisliği | Su Kaynakları ve Su Yapıları

Dergi: Black Sea Journal of Engineering and Science Vol.7 Issue 5, pp.988-1000

Belge Tipi: Makale

Yayın Tarihi: 9/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001324892

pISSN: 2619-8991

Sayı

Yazarlar:

Ali Yıldız

Yayıncı:

Karyay Karadeniz Yayımcılık

Ana Başlıklar:

Hidromekanik | Su Kaynakları Mühendisliği | Su Kaynakları ve Su Yapıları

Dergi:

Black Sea Journal of Engineering and Science Vol.7 Issue 5, pp.988-1000

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001324892

pISSN:

2619-8991