Linear interaction approximation for shock/disturbance interaction in a Noble–Abel stiffened gas - Archive ouverte HAL Access content directly
Journal Articles Shock Waves Year : 2023

Linear interaction approximation for shock/disturbance interaction in a Noble–Abel stiffened gas

Abstract

When departure from the ideal gas equation of state is considered, the Noble-Abel stiffened gas model is an appealing and versatile candidate due to its simple form. The Linear Interaction Approximation formalism is extended to consider non-ideal gas effects introduced by this equation of state. Kovásznay decomposition and adequate definition of the energy of disturbances are provided in the context of this equation of state. Changes with respect to ideal gas are investigated on transfer functions, critical angle and compression factor. Those differences yield concrete effects on the damping and transfer of fluctuations across shock waves. Those changes are further illustrated by considering the interaction of an entropy spot with a Mach 3 stationary shock wave.
Fichier principal
Vignette du fichier
LIA_NASG.pdf (1.15 Mo) Télécharger le fichier

Dates and versions

hal-04097657 , version 1 (15-05-2023)

Identifiers

Cite

G. Farag, P. Boivin, P. Sagaut. Linear interaction approximation for shock/disturbance interaction in a Noble–Abel stiffened gas. Shock Waves, 2023, ⟨10.1007/s00193-023-01131-8⟩. ⟨hal-04097657⟩
47 View
21 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More