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Numerical modeling of isothermal homogeneous turbulent flows by finite volumes in a compound hydraulic scheme

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Abstract

The objective of this work is to study the numerical modeling of turbulent flow in a compound hydraulic scheme. The configuration adopted to collect the water flows from the inputs of several other secondary channels is typical. Indeed, this model is almost a real representation of the existing hydraulic structure, to study the spatio-temporal dynamics of unsteady turbulent flows. In addition, the work also consists of implementing an appropriate turbulence model, to ensure a better analysis of free, homogeneous isotropic turbulent flows. To test relevance and validity of the hypotheses on the behavior of turbulent flows in a complex hydraulic system such as ours and to corroborate the results obtained, we have compelled to compare the numerical results carried out with the experimental results of the work having demonstrated a great interest for turbulent flows and having been conducted under identical conditions (Jiménez and Hanif J Hydraul Eng 114:377–395, 1988; Fennema and Chaudhry J Hydraul Eng 116:1013–1034, 1990; Bhallamudi and Chaudhry J Hydraul Res 30:77–93, 1992). Particular emphasis is placed on the geometry of the digital channel adopted as well as other parameters such as roughness and channel slope, to identify fluctuations in hydrodynamic parameters and the distribution of turbulent stresses and wall friction. The equations governing the phenomenon studied are directly related to the continuity and momentum conservation equations which form the system of nonlinear Navier–Stokes equations. The modeling by numerical simulations based on finite volumes was carried out using the Fluent software, which is a 3D numerical model, using the system of nonlinear partial differential equations of the movement of fluids in a continuous medium

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  1. Hydraulic Department, Batna 2 University, Batna, Algeria

    Omar Khanfouf & Fourar Ali

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  1. Omar Khanfouf
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  2. Fourar Ali
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Correspondence to Omar Khanfouf.

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Khanfouf, O., Ali, F. Numerical modeling of isothermal homogeneous turbulent flows by finite volumes in a compound hydraulic scheme. Model. Earth Syst. Environ. 8, 1911–1921 (2022). https://doi.org/10.1007/s40808-021-01196-3

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  • DOI: https://doi.org/10.1007/s40808-021-01196-3

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