CFD software applications for transcritical free surface flow

Saira F. Pineda, Armando J. Blanco, Luis Rojas-Solórzano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Open flow channel is very common in engineering applications. Traditional approaches solve shallow-water flow equations, known as Saint-Venant equations, when one or two dimension solutions can be adequate for obtaining most of the important flow characteristics. However, complex situations can require solving Navier-Stokes equations. The arrival of high performance computers and commercial software packages offers new possibilities in the field of numerical hydraulics. However, commercial software packages should be tested on some specific cases; so that these can be used with confidence. In this paper we solve several cases of free surface flow that consider subcritical, supercritical, critical, oscillatory depth profiles and hydraulic jumps using a commercial package, CFX™. Most of these cases are proposed as benchmark solutions for non-prismatic cross section, non-uniform bed slope and transition between subcritical and supercritical flow. Other cases as Hydraulic jump consist of experimental data of hydraulics jumps for incident flow with Froude numbers up to 4.23. Both types of cases allow us to perform the verification and validation of the commercial package used. Results obtained with CFX™ show excellent agreement with analytical solutions, for subcritical, supercritical, transitional and hydraulic jump cases. Special care with grid selection and entrance boundary condition is crucial to simulate with accuracy these types of flows. In particular, when a proper structured mesh is used, quality results are highly improved. Finally, results show to be insensitive to entrance turbulence conditions.

Original languageEnglish
Title of host publicationProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
Pages1987-1994
Number of pages8
Volume1
EditionPART C
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009 - Vail, CO, United States
Duration: Aug 2 2009Aug 6 2009

Other

Other2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009
CountryUnited States
CityVail, CO
Period8/2/098/6/09

Fingerprint

Hydraulic jump
Application programs
Computational fluid dynamics
Software packages
Open channel flow
Froude number
Navier Stokes equations
Turbulence
Hydraulics
Boundary conditions
Water

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Pineda, S. F., Blanco, A. J., & Rojas-Solórzano, L. (2009). CFD software applications for transcritical free surface flow. In Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009 (PART C ed., Vol. 1, pp. 1987-1994) https://doi.org/10.1115/FEDSM2009-78075

CFD software applications for transcritical free surface flow. / Pineda, Saira F.; Blanco, Armando J.; Rojas-Solórzano, Luis.

Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. Vol. 1 PART C. ed. 2009. p. 1987-1994.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pineda, SF, Blanco, AJ & Rojas-Solórzano, L 2009, CFD software applications for transcritical free surface flow. in Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. PART C edn, vol. 1, pp. 1987-1994, 2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009, Vail, CO, United States, 8/2/09. https://doi.org/10.1115/FEDSM2009-78075
Pineda SF, Blanco AJ, Rojas-Solórzano L. CFD software applications for transcritical free surface flow. In Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. PART C ed. Vol. 1. 2009. p. 1987-1994 https://doi.org/10.1115/FEDSM2009-78075
Pineda, Saira F. ; Blanco, Armando J. ; Rojas-Solórzano, Luis. / CFD software applications for transcritical free surface flow. Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. Vol. 1 PART C. ed. 2009. pp. 1987-1994
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