Comparison of Methods for Predicting Discharge in Straight Compound Channels Using the Apparent Shear Stress Concept

Tülay ÖZBEK; Müsteyde B. KOÇYİĞİT; Önder KOÇYİĞİT

Article Details

Comparison of Methods for Predicting Discharge in Straight Compound Channels Using the Apparent Shear Stress Concept

Authors:

Tülay ÖZBEK | Müsteyde B. KOÇYİĞİT | Önder KOÇYİĞİT

Publisher:

TUBITAK

Journal:

Turkish Journal of Engineering and Environmental Sciences 2004 Vol.28 Issue 2, pp.101-109

Document Type:

Article

Publication Date:

1/2004

Document Language:

Turkish

Document ID (Org No.):

2000745098

Frequency:

Tri-annual

eISSN:

1303-6157

pISSN:

1300-0160

Abstract:

 

Some experimental results from the SERC Flood Channel  Facility at Hydraulic Research, Wallingford, UK, were used for  computing apparent shear stress and discharge in symmetrical compound  channels with varying floodplain widths.  Three assumed interface  planes (vertical, horizontal and diagonal) between the main channel  and the floodplain sub-sections were considered.  The apparent shear  stresses across those interfaces were computed and the ratios of these  stresses to the average main channel shear stresses were determined.   Then discharge values in the sub-sections and in the whole  cross-section were evaluated.  The results showed that the performance  of these computation methods depends on their ability to accurately  predict apparent shear stress.  Diagonal and horizontal division  methods provided better results than the vertical division method,  with the diagonal method giving the most satisfactory results.

 

Some experimental results from the SERC Flood Channel  Facility at Hydraulic Research, Wallingford, UK, were used for  computing apparent shear stress and discharge in symmetrical compound  channels with varying floodplain widths.  Three assumed interface  planes (vertical, horizontal and diagonal) between the main channel  and the floodplain sub-sections were considered.  The apparent shear  stresses across those interfaces were computed and the ratios of these  stresses to the average main channel shear stresses were determined.   Then discharge values in the sub-sections and in the whole  cross-section were evaluated.  The results showed that the performance  of these computation methods depends on their ability to accurately  predict apparent shear stress.  Diagonal and horizontal division  methods provided better results than the vertical division method,  with the diagonal method giving the most satisfactory results.

Article Details

Comparison of Methods for Predicting Discharge in Straight Compound Channels Using the Apparent Shear Stress Concept

Authors: Tülay ÖZBEK | Müsteyde B. KOÇYİĞİT | Önder KOÇYİĞİT

Publisher: TUBITAK

Journal: Turkish Journal of Engineering and Environmental Sciences 2004 Vol.28 Issue 2, pp.101-109

Document Type: Article

Publication Date: 1/2004

Document Language: Turkish

Document ID (Org No.): 2000745098

Frequency: Tri-annual

eISSN: 1303-6157

pISSN: 1300-0160

Issues

Authors:

Tülay ÖZBEK | Müsteyde B. KOÇYİĞİT | Önder KOÇYİĞİT

Publisher:

TUBITAK

Journal:

Turkish Journal of Engineering and Environmental Sciences 2004 Vol.28 Issue 2, pp.101-109

Document Type:

Article

Publication Date:

1/2004

Document Language:

Turkish

Document ID (Org No.):

2000745098

Frequency:

Tri-annual

eISSN:

1303-6157

pISSN:

1300-0160