Space and energy-based turbulent scale-resolving simulations of flow in a 5 x 5 nuclear reactor core fuel assembly with a spacer grid Academic Article

abstract

• 2018 Elsevier Inc. The partially averaged NavierStokes turbulence model, which is a bridging model between the Reynolds averaged NavierStokes model and direct numerical simulation, is capable of directly resolving the turbulent scales of interest by filtering the NavierStokes equation using turbulent kinetic energy and dissipation based filters. In this study, comparison is made between the partially averaged NavierStokes and large eddy simulation models, with emphasis on the mean flow characteristics and spatio-temporal turbulent flow structures. The results show that the partially averaged NavierStokes modeling produces results comparable to those of large eddy simulation when the appropriate cut-off energy filter is chosen. The test case involves simulating flows in a 5 5 fuel rod bundle configuration with a spacer grid at a Reynolds number of 14,000. The simulation results are compared with particle image velocimetry data obtained from the scientific literature.

authors

• Hassan, Yassin

published proceedings

• INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW

author list (cited authors)

• Busco, G., & Hassan, Y. A.

citation count

• 27

complete list of authors

• Busco, Giacomo||Hassan, Yassin A

publication date

• June 2018

publisher

• Elsevier  Publisher

published in

• INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW  Journal

keywords

• Computational Fluid Dynamics
• Large Eddy Simulation
• Partially Averaged Navier-stokes Equations
• Pressurized Water Reactor Fuel Rod Bundle
• Scale-resolving Simulations
• Spacer Grid

Digital Object Identifier (DOI)

• 10.1016/j.ijheatfluidflow.2018.04.003

start page

• 420

end page

• 441

volume

• 71

URL

• http://dx.doi.org/10.1016/j.ijheatfluidflow.2018.04.003

user-defined tag

• 7 Affordable and Clean Energy