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Numerical Simulation of Turbulent Water Jet With Experimental Validation

[+] Author Affiliations
Todd M. Reedy, Zachary M. Shoemaker

Bradley University, Peoria, IL

Paper No. IMECE2008-69286, pp. 2035-2042; 8 pages
doi:10.1115/IMECE2008-69286
From:
  • ASME 2008 International Mechanical Engineering Congress and Exposition
  • Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C
  • Boston, Massachusetts, USA, October 31–November 6, 2008
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4871-5 | eISBN: 978-0-7918-3840-2
  • Copyright © 2008 by ASME

abstract

Many undergraduate and early graduate engineering programs offer courses in numerical analysis to teach students how to solve partial differential equations numerically and fluid mechanics to teach how the Navier-Stokes equations govern fluid phenomena. However, the connection between numerical analysis taught in the classroom and CFD is very rarely made. In an effort to bridge the gap, a simplified CFD simulation was developed to model the diffusion of a two dimensional turbulent water jet. Assumptions were made to simplify the Navier-Stokes equations in cartesian coordinates to arrive at a single PDE with only three terms. Considering that the modeled water jet is fully turbulent (Re ≈ 150,000), an algebraic turbulence model was incorporated to account for turbulent viscosity effects, namely Prandtl’s Mixing Length model. Velocity measurement and flow visualization were conducted using a water table to validate the model. Also, a commercially available CFD program (FLUENT) was employed to evaluate the validity of the simplifications made to the governing equations.

Copyright © 2008 by ASME

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