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Assessment of Different Turbulence Models on Simulations of Confined Jets in a Crossflow at Supercritical Pressure

[+] Author Affiliations
Saeid Janani, Komal Gada, Hamid Rahai

California State University, Long Beach, Long Beach, CA

Farhad Davoudzadeh

Air Force Research Laboratory, Edwards AFB, CA

Paper No. IMECE2018-87894, pp. V007T09A054; 6 pages
doi:10.1115/IMECE2018-87894
From:
  • ASME 2018 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering
  • Pittsburgh, Pennsylvania, USA, November 9–15, 2018
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5210-1
  • Copyright © 2018 by ASME

abstract

Numerical investigations of using two different turbulence models of K-ε and K-ω on mixing characteristics of two confined jets in a crossflow at supercritical pressure have been performed. The confined jets were at 180 degrees from each other injecting into a round tube. The jet to crossflow mass flows ratio, r, was 2.96. Reynolds Averaged Navier Stokes (RANS) equations were solved using Siemens PLM CCM+ software. Results indicate higher mixing rate with K-ω turbulence model. Higher vorticity and lower turbulent kinetic energy are observed with k-ω turbulence model. Increased mixing indicate reduced velocity and pressure gradients and cooler fluid toward the tube wall.

Copyright © 2018 by ASME

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