Year 2014, Volume 38 , Issue 2, Pages 278 - 292 2014-02-01

Boundary shear stress in asymmetric rectangular compound channels
Boundary shear stress in asymmetric rectangular compound channels

ISSAM A. ALKHATIB [1] , MUSTAFA GÖĞÜŞ [2]


A series of nine experiments was performed in a physical model of an asymmetric compound channel to quantify the boundary shear stress at the interface of the bed of a main channel and floodplain. Commonly used equations of shear stress distributions across the bottoms of the main channel and floodplain interfaces were analyzed and tested for various types of asymmetric compound channels and their flow conditions. The lateral momentum transfer between the deep main channel and the adjoining shallow floodplains was found to greatly affect the shear stress distribution at the bottoms of the main channel and the flood plain subsections. Different dimensionless ratios of shear stress distributions were obtained and related to the relevant parameters. Some important results concerning the uniformity of the shear stress distribution, which is significant in sediment-laden rivers to state the possible locations of erosion and deposition, are presented.
A series of nine experiments was performed in a physical model of an asymmetric compound channel to quantify the boundary shear stress at the interface of the bed of a main channel and floodplain. Commonly used equations of shear stress distributions across the bottoms of the main channel and floodplain interfaces were analyzed and tested for various types of asymmetric compound channels and their flow conditions. The lateral momentum transfer between the deep main channel and the adjoining shallow floodplains was found to greatly affect the shear stress distribution at the bottoms of the main channel and the flood plain subsections. Different dimensionless ratios of shear stress distributions were obtained and related to the relevant parameters. Some important results concerning the uniformity of the shear stress distribution, which is significant in sediment-laden rivers to state the possible locations of erosion and deposition, are presented.
  • Yf Tk T1
  • average shear stress at the bottom of main channel.
  • average shear stress at the bed of floodplains.
  • maximum shear stress at the bottom of main channel.
  • maximum shear stress at the bed of floodplains. T T5 mean shear stress at the bottom of the main channel and equals γ RmcS. mean shear stress at the bed of the floodplain and equals γ RfS0. free stream velocity. mean velocity profile. normal distance from the wall. y
  • Tominaga A, Nezu I, Ezaki K, Nakagawa H. Three dimensional turbulent structure in straight open channel flows.
  • J Hydraul Res 1989; 27: 149–173.
  • Zheng Y, Jin YC. Boundary shear in rectangular ducts and channels. J Hydraul Eng 1998; 124: 86–89.
  • Rameshwaran, P, Naden PS. Three-dimensional numerical simulation of compound channel flows. J Hydraul Eng 2003; 129: 645–652.
  • Yang SQ, McCorquodale JA. Determination of boundary shear stress and Reynolds shear stress in smooth rectan
  • gular channel flows. J Hydraul Eng 2004; 130: 458–462.
  • Zarrati AR, Jin YC, Karimpour S. Semi-analytical model for shear stress distribution in simple and compound open
  • channels. J Hydraul Eng 2008; 134: 205–215.
  • Guo J, Julien PY. Turbulent velocity profiles in sediment laden flows. J Hydraul Res 2001; 39: 11–23.
  • Babaeyan-Koopaei K, Ervine DA, Carling PA, and Cao Z. Velocity and turbulence measurements for two overbank
  • flow events in River Severn. J Hydraul Eng 2002; 128: 891–900.
  • Guo J, Julien PY. Shear stress in smooth rectangular open-channel flows. J Hydraul Eng 2005; 131: 30–37.
  • Julien PY. Erosion and Sedimentation. Cambridge, UK: Cambridge University Press; 1995.
  • Cheng NS. Exponential formula for bedload transport. J Hydraul Eng 2002; 128: 942–946.
  • Berlamont JE, Trouw K, Luyckx G. Shear stress distribution in partially filled pipes. J Hydraul Eng 2003; 129:
  • Bocchiola D, Menduni G, Ward D. Testing block probes for wall shear stress measurement in water flows. J Hydraul Eng 2003; 129: 102–109.
  • Cheng N, Sumer BM, FredsØe J. Investigation of bed shear stresses subject to external turbulence. International Journal of Heat and Fluid Flow 2003; 24: 816–824.
  • Eckelmann H. The structure of the viscous sublayer and the adjacent wall region in a turbulent channel flow. J Fluid Mech 1974; 65: 439–459.
  • Wietrzak A, Lueptow RM. Wall shear stress and velocity in a turbulent axisymmetric boundary layer. J Fluid Mech 1994; 259: 191–218.
  • Colella KJ, Keith WL. Measurements of wall shear stress fluctuations beneath a turbulent boundary layer, 1997, In: Turbulent Flows, The 1997 ASME Fluids Engineering Division Summer Meeting, vol. 1. American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, New York, USA, 1997; pp. 1–5.
  • Chew YT, Khoo BC, Lim PC, Teo CJ. Dynamic response of a hot-wire anemometer. Part II: A flush-mounted hot wire and hot-film probes for wall shear stress measurements. Meas Sci Technol 1998; 9: 764–778.
  • Miyagi N, Kimura M, Shoji H, Saima A, Ho CM, Tung S, Tai YC. Statistical analysis on wall shear stress of turbulent boundary layer in a channel flow using micro-shear stress imager. Int J Heat Fluid Flow 2000; 21: 576–581.
  • Blinco PH, Simons DB. Characteristics of turbulent boundary shear stress. J Eng Mech Div ASCE 1974; 100: 203–220.
  • Obi S, Inoue K, Furukawa T, Masuda S. Experimental study on the statistics of wall shear stress in turbulent channel flows. Int J Heat Fluid Flow 1996; 17: 187–192.
  • Thomas WA, Prashum AI. Mathematical model of scour and deposition. J Hydr Div 1977; 110: 1613–1641.
  • Holly FM, Rahuel JL. New numerical/ physical framework for mobile-bed modeling, part 1: numerical and physical principles. J Hydraul Res 1990; 28, 401–416.
  • Lee HY, Hsieh HM, Yang JC, Yang CT. Quasi-two-dimensional simulation of scour and deposition in alluvial channels. J Hydraul Eng 1997; 123: 600–609.
  • Paquier A, Khodashenas S. River bed deformation calculated from boundary shear stress. J Hydraul Res 2002; 40: 603–609.
  • Myers WRC, Elsawy EM. Boundary shear in channels with floodplain. J Hydr Div 1975; 101: 993–1025.
  • Lai CJ. Flow resistance, discharge capacity and momentum transfer in smooth compound closed ducts. PhD, University of Birmingham, UK, 1986.
  • Lai CJ, Knight DW Distributions of streamwise velocity and boundary shear stress in compound ducts, Proc. 3rd Int. Symp. on Rened Flow Modelling and Turbulence Measurements, IAHR, Ed. Iwasa Y, Tamai N, Wada A. Tokyo, Japan, 1988.
  • Myers WRC, Brennan EK. Flow resistance in compound channels. J Hydraul Res IAHR 1990; 28: 141–155.
  • Rhodes DG, Lamb EJ, Chance RJ, Jones BS. Automatic measurement of boundary shear stress and velocity distributions in duct flow. J Hydraul Res IAHR 1991; 29: 189–197.
  • Rhodes DG, Knight DW. Distribution of shear force on the boundary of a smooth rectangular duct. J Hydraul Eng 1994; 120: 787–807.
  • Knight DW, Cao S. Boundary shear in the vicinity of river banks. Proc Nat Conf Hydraulic Engrg ASCE 1994; Bualo, USA.
  • Thornton CI, Abt SR, Morris CE, Fischenich JC. Calculating shear stress at channel-overbank interfaces in straight channels with vegetated floodplains. J Hydraul Eng 2000; 126: 929–936.
  • Khatua KK, Patra KC. Boundary shear stress distribution in compound open channel flow. J Hydraul Res (ISH) 2007; 12: 39–55.
  • Preston JH. The determination of turbulent skin friction by means of pitot tubes. J Royal Aeronautic Society 1954; 58: 109–121.
  • Patel VC. Calibration of the Preston tube and limitations on its use in pressure gradients. J Fluid Mech 1965; 23:
  • Isaacs LT, Macintosh JC. Measurement of shear stress in open channels, Conf. on Hydraulics in Civ. Engrg., The Institution of Engineers, Sydney, Australia, pp. 115–119, 1990.
  • Abaza KA, Al-Khatib IA. Generalization of shear stress distribution in rectangular compound channels. Turkish J Eng Env Sci 2003; 27: 409–421.
  • Clauser FH. The turbulent boundary layer. Adv Appl Mech 1956; 4: 1–51.
  • Wei T, Schmidt R, McMurtry P. Comment on the Clauser chart method for determining the friction velocity. Experiments in Fluids 2005; 38: 695–699.
  • Knight DW, Macdonald JA. Hydraulic resistance of artificial strip roughness. J Hydr Div ASCE 1979; 105: 675–690.
  • Knight DW. Boundary shear in smooth and rough channels. J Hydr Div ASCE 1981; 107: 839–851.
  • Knight DW, Demetriou JD. Floodplain and main channel flow interaction. J Hydraul Eng 1983; 109: 1037–1092.
  • Baird JI, Ervine DA. Resistance to flow in channels with overbank floodplain flow. Proceedings of the 1st Interna- tional Conference on Channels and Control Structures, 1984.
  • McKee PM, Elsawy EM, McKeogh EJ. A study of the hydraulic characteristics of open channels with flodplains, IAHR, Proceedings of the 21st Congress, Melbourme, Vol. 3, 1985.
  • Al-Khatib IA, Dmadi NM. Boundary shear stress in rectangular compound channels. Turkish J Eng Env Sci 1999; 23: 9–18.
Primary Language tr
Journal Section Articles
Authors

Author: ISSAM A. ALKHATIB

Author: MUSTAFA GÖĞÜŞ

Dates

Publication Date : February 1, 2014

Bibtex @ { tbtkengineering145617, journal = {Turkish Journal of Engineering and Environmental Sciences}, issn = {1300-0160}, eissn = {1303-6157}, address = {}, publisher = {TUBITAK}, year = {2014}, volume = {38}, pages = {278 - 292}, doi = {10.3906/muh-1208-6}, title = {Boundary shear stress in asymmetric rectangular compound channels}, key = {cite}, author = {ALKHATIB, ISSAM A. and GÖĞÜŞ, MUSTAFA} }
APA ALKHATIB, I , GÖĞÜŞ, M . (2014). Boundary shear stress in asymmetric rectangular compound channels. Turkish Journal of Engineering and Environmental Sciences , 38 (2) , 278-292 . DOI: 10.3906/muh-1208-6
MLA ALKHATIB, I , GÖĞÜŞ, M . "Boundary shear stress in asymmetric rectangular compound channels". Turkish Journal of Engineering and Environmental Sciences 38 (2014 ): 278-292 <https://dergipark.org.tr/en/pub/tbtkengineering/issue/12203/145617>
Chicago ALKHATIB, I , GÖĞÜŞ, M . "Boundary shear stress in asymmetric rectangular compound channels". Turkish Journal of Engineering and Environmental Sciences 38 (2014 ): 278-292
RIS TY - JOUR T1 - Boundary shear stress in asymmetric rectangular compound channels AU - ISSAM A. ALKHATIB , MUSTAFA GÖĞÜŞ Y1 - 2014 PY - 2014 N1 - doi: 10.3906/muh-1208-6 DO - 10.3906/muh-1208-6 T2 - Turkish Journal of Engineering and Environmental Sciences JF - Journal JO - JOR SP - 278 EP - 292 VL - 38 IS - 2 SN - 1300-0160-1303-6157 M3 - doi: 10.3906/muh-1208-6 UR - https://doi.org/10.3906/muh-1208-6 Y2 - 2020 ER -
EndNote %0 Turkish Journal of Engineering and Environmental Sciences Boundary shear stress in asymmetric rectangular compound channels %A ISSAM A. ALKHATIB , MUSTAFA GÖĞÜŞ %T Boundary shear stress in asymmetric rectangular compound channels %D 2014 %J Turkish Journal of Engineering and Environmental Sciences %P 1300-0160-1303-6157 %V 38 %N 2 %R doi: 10.3906/muh-1208-6 %U 10.3906/muh-1208-6
ISNAD ALKHATIB, ISSAM A. , GÖĞÜŞ, MUSTAFA . "Boundary shear stress in asymmetric rectangular compound channels". Turkish Journal of Engineering and Environmental Sciences 38 / 2 (February 2014): 278-292 . https://doi.org/10.3906/muh-1208-6
AMA ALKHATIB I , GÖĞÜŞ M . Boundary shear stress in asymmetric rectangular compound channels. Turkish Journal of Engineering and Environmental Sciences. 2014; 38(2): 278-292.
Vancouver ALKHATIB I , GÖĞÜŞ M . Boundary shear stress in asymmetric rectangular compound channels. Turkish Journal of Engineering and Environmental Sciences. 2014; 38(2): 292-278.