Some Observations On The Effect Of Turbulence Modeling In Numerical Simulations Of Multiple-Burst Flow Fields

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Report Number: CONF-8305107, p. 42-47
Author(s): Chapyak, E. J.
Corporate Author(s): Energy Division, Los Alamos National Laboratory
Laboratory: Lawrence Livermore National Laboratory
Date of Publication: 1983-07
Pages: 6
DoD Task:
Identifier: This paper is part of a conference proceedings. See ADA132780

Abstract:
We describe some preliminary attempts to calculate the development of a simple class of axisymmetric multiple-burst environments. Our primary interest is in the intermediate time regime, during which the characteristic plume structures stabilize and begin to spread horizontally. Employing a standard two-equation description of turbulent entrainment, we find that the maximum extent of plume penetration into the atmosphere is sensitive to details of the turbulence modeling. Some interesting dynamic features of the plume stabilization process are also observed. These results are discussed together with supporting analysis and used to identify generic differences between single-and multiple- burst environments.

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