This paper describes the non-linear dynamics of premixed flames responding to harmonic velocity disturbances. It extends a prior computational study which determined the key parameters influencing the nonlinear flame characteristics. It was shown that the linear and nonlinear characteristics of the flame dynamics were controlled by the superposition of two sources of flame disturbances: those o...

Massive landslides can generate large tsunamis and endanger human lives properties. While a number of laboratory experiments on either subaerial or submarine landslide-tsunamis have been conducted, few studies focused partially submerged events. The present study aimed to investigate the characteristics develop predictive equation that estimate their heights through three-dimensional used 114 d...

Laser-Doppler velocity measurements in water are reported for the flow in the plane of symmetry of a turbulent spot. The unsteady mean flow, defined as an ensemble average, is fitted to a conical growth law by using data at three streamwise stations to determine the virtual origin in x and t. The two-dimensional unsteady stream function is expressed as 1fr = U~ tg(£, r/) in conical similarity c...

The Galilean constitutive equations for the electrodynamics of moving media are derived for the first time. They explain all the historic and modern experiments which were interpreted so far in a relativistic framework assuming the constant light celerity principle. Here, we show the latter to be sufficient but not necessary. Copyright c © EPLA, 2008 One century ago, Hermann Minkowski formulate...

The algorithm used to transform velocity signals from beam coordinates to earth coordinates in an Acoustic Doppler Current Profiler relies on the assumption that the currents are uniform over the horizontal distance separating the beams. This condition may be violated by (nonlinear) internal waves, which can have wavelengths as small as 100 − 200m. In this case, the standard algorithm combines ...

In an open channel, a hydraulic jump is a sudden transition from a high-velocity to slower, fluvial flow motion. The impinging flow forms a turbulent roller with a highly fluctuating free-surface, while a large amount of air bubbles is entrapped at the jump toe. The present work presents some physical investigations of hydraulic jumps based upon a wide range of inflow Froude numbers (3.8 < Fr1 ...

The Atlas-Meseta intracontinental orographic system of Morocco experienced recent, large-scale surface uplift as documented by elevated late Miocene, shallow-water marine deposits exposed in the Middle Atlas Mountains. Anti-Atlas Mountains do not present any stratigraphic records that document regional vertical movements, however, presence a high-standing, erosional surface, and transient state...

Various mechanisms can lead to the entrapment of air pockets within stormwater storage tunnels when they undergo rapid filling during intense rain events [Vasconcelos and Wright(2006)]. These entrapped air pockets are linked to operational issues within systems such as damaging surges, storage capacity loss, and severe geysering upon their release through water-filled ventilation shafts. Theref...