Three-dimensional structure and dynamics of a supersonic jet

Journal Article · Sun Jun 01 04:00:00 EDT 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/184684· OSTI ID:5229030

Arnold, C N; Arnett, W D

Using a different numerical technique, the present study reproduces in two dimensions and three dimensions the 1982 results of Norman and colleagues for an axisymmetric supersonic jet. While the three-dimensional models show the same overall structure (collimated beam, beam cap, strong backflow sustaining a cocoon around the beam), some additional features are also seen that are three-dimensional in nature. The cocoon has a rich structure of dynamical cells that have vortical motion perpendicular to the jet's beam axis. These cells may be important for the overall stability and collimation of the jet on the whole. Pinching modes on the cocoon are observed; however, for the present choice of parameters, no garden hose fluting of the jet is observed. 10 references.

• Research Organization: ETA Systems, Inc., Saint Paul, MN; Chicago Univ., IL
• OSTI ID: 5229030
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 305; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640100* -- Astrophysics & Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTROPHYSICS
COMPUTERIZED SIMULATION
ELECTROMAGNETIC RADIATION
ENTROPY
FLUID FLOW
PHYSICAL PROPERTIES
PLASMA JETS
RADIATIONS
RADIOWAVE RADIATION
SIMULATION
SUPERSONIC FLOW
THERMODYNAMIC PROPERTIES
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS