Analysis of Turbulent Flow Measurements in a Flume with Induced Upward Seepage
The aim of this chapter is to analyze the effect of the groundwater flow in free-surface hydrodynamics. Several series of turbulent flow measurements were carried out in a re-circulating flume where upward seepage was induced by external hydrostatic pressures acting in the lowest part of the channel bed. The results of the experimental measurements (namely, the mean velocities, statistical moments, and other turbulence parameters for established hydrodynamic conditions) are presented and analyzed. The differences between the open-channel hydrodynamics with and without seepage are compared. The upward seepage influenced the behavior of velocity fluctuations. Consequently, some of the turbulence parameters were affected, such as the turbulent kinetic energy and the Reynolds stresses.
KeywordsTurbulent Kinetic Energy Reynolds Stress Velocity Fluctuation Hydraulic Head Statistical Moment
- Czernuszenko W, Holley E (2007) Open-channel turbulence measurement with a three-component acoustic Doppler velocimeter. In: Transport phenomena in hydraulics. Polish Academy of Science, Warsaw, pp 49–79Google Scholar
- Herrera-Granados O (2008a) The variation of the water’s density due to sedimentation processes and its role in modeling open channel flow. In: Dohmen-Janssen M, Hulscher SJMH (eds) RCEM 2007. Taylor and Francis, London, pp 477–484Google Scholar
- Herrera-Granados O (2008b) Effect of seepage flow on channel bed evolution at the laboratory scale. In: Altinakar MS et al (eds) River flow. Kubaba Congress Department, Izmir, pp 1117–1126Google Scholar
- Herrera-Granados O (2009) Computational fluid dynamics in river engineering: a general overview. In: InterTech 2009. Poznań University of Technology, Poland, pp 259–263Google Scholar
- Reeve D (2010) Risk and reliability: coastal and hydraulic engineering. Spon Press, LondonGoogle Scholar