The phrase "absolute instability" is correct and usable in written English.
It can be used in contexts related to physics, engineering, or any field discussing systems that are completely unstable or prone to failure.
Example: "The experiment demonstrated absolute instability in the chemical reaction, leading to unpredictable results."
Alternatives: "complete instability" or "total instability".
Convective instability always occurs at a lower flow velocity than absolute instability.
It is found that uniform potential flow over viscoelastic (dissipative) layer admits only absolute instability, whereas convective and absolute instability modes may be found under laminar and turbulent boundary layers.
The results suggest that the static divergence waves observed on highly damped coatings in experiments are manifestation of absolute instability.
This shows that a transition from a convective to an absolute instability occurs in the zone in between fully turbulent and laminar flow.
A theoretical study is presented which considers the onset of convective instability modes (both stationary and travelling relative to the rotating surface) and local absolute instability.
Absolute instability is obtained for somewhat extreme values of the mean flow (tiny boundary layer thickness), and under realistic conditions the flow is convectively unstable.
Feedback flow control of the wake of a circular cylinder at a Reynolds number of 100 is an interesting and challenging benchmark for controlling absolute instabilities associated with bluff body wakes.
For the sinuous mode, there is a critical Weber number of unity below which pseudo-absolute instability exists and above which convective instability appears.
The wake-flow frequencies derived by an absolute-instability analysis are compared with the frequencies realized in flow simulations, to clarify the effect of an acoustic feedback mechanism, at a low Reynolds number.
The proposed C-ACC model results in convective downstream and absolute string instability, but not convective upstream string instability observed in human-driven traffic and in the ACC model.
Due to the absolute buoyancy instability and the geometry effects, the jet diffusion flames display unsteady dynamic behavior.
