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Showing 1 to 5 of 5 for “"Weakly unstable"”.
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The Influence of Cellular Structure on the Dynamics of Detonations with Constant Mass Divergence
… in two mixtures, one displaying characteristic weakly unstable detonations (2C2H2 + 5O2 + 21Ar), and the other displaying highly unstable detonations (C3H8 + 5O2). The dependence of the velocity deficits and limits on the amount of mass divergence for the two mixtures were compared with the …
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Baroclinic instability of a meridionally varying basic state
… main topic is the finite amplitude evolution of weakly unstable, linear eigenmodes in a meridionally varying version of Phillips' two-layer model. It is shown in chapter four that interactions between neutral modes and the unstable mode strongly influence the evolution of the latter and are …
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Nonlinear evolution of Vlasov equilibria
… dependence on velocity are considered. For weakly unstable modes, the problem of the discrepancy between different theoretical models about the scaling of the saturation amplitude with the growth rate is addressed for the first time with the splitting scheme algorithm. The results are in …
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Direct Numerical Simulation of Flow Over Circular Cylinders for Large -Eddy Simulation Modeling
… (DNS). At this condition, the shear layer is unstable. However, previous direct numerical simulations of this flow have been limited to Reynolds numbers of 1000 or less, where the shear layer is stable or only weakly unstable. The computational method uses a Fourier-Chebyshev spectral …
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High-Order Finite-Difference Schemes and Their Application to Computational Acoustics
… combined spatial and temporal discretization is weakly unstable when applied to the linearized Euler equations. Two methods of achieving numerical stability were investigated. The first method involved the addition of artificial dissipation and the second involved a filtering procedure. Both …