Results 151 to 160 of about 922 (191)

Transient regime in second harmonic generation

Optics Communications, 2013
Abstract The time growth of the electromagnetic field at the fundamental and double frequencies is studied from the very onset of the second harmonic generation (SHG) process for a set of dipoles lacking a symmetry centre and exhibiting a nonresonant coupling with a classical electromagnetic field.
Szeftel, Jeremie, Sandeau, L., Sandeau, Nicolas, Delezoide, C., Khater, A.   +4 more
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Transient regime of hot carriers in InP

Semiconductor Science and Technology, 1992
A direct numerical method is developed for solving the electron transient coupled Boltzmann equations in the Gamma and L valleys in InP. The complicated shape of the transient distribution function is obtained with a great accuracy. Fine structures of the velocity and the energy are obtained in the Gamma and L valleys when the population of L valleys ...
J C Vaissiere, M Elkssimi, J P Nougier
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Transient and Forced Regimes in the Wake of a Sphere

1998
Despite its practical importance, many fundamental aspects of the wake behind a sphere remain unknown, here we have inquired the transition from steady to periodic flow.
D. Ormieres, M. Provansal, A. Barrantes
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Laser energy distribution in the transient regime

ILSC 2013: Proceedings of the International Laser Safety Conference, 2013
The period of operation immediately following laser switch-on, while a working population inversion is established and thermal gradients are both created and dissipated, may be defined as the transient regime. During this period the distribution of energy within a laser beam is typically in a state of flux. Depending on the device, a steady-state laser
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The Role of Transients in Weather Regimes and Transitions

Journal of the Atmospheric Sciences, 1993
Abstract Transition of weather regimes is examined in a highly simplified model. Two completely distinct internal methods of transition are identified. The first is a synoptically triggered large-scale instability, while the second is an energy inconsistency between the large-scale and synoptic scales that does not allow the two scales to equilibrate ...
Brian Reinhold, Shuting Yang
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Pressure Transient Tests and Flow Regimes in Fractured Reservoirs

SPE Annual Technical Conference and Exhibition, 2013
Abstract Fractures are common features in many well-known reservoirs. Naturally fractured reservoirs consist of fractures in igneous, metamorphic, and sedimentary rocks (matrix). Faults in many naturally fractured carbonate reservoirs often have high-permeability zones and are connected to numerous fractures that have varying ...
Fikri Kuchuk, Denis Biryukov
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Transient dynamics of the wavy regime in Taylor–Couette geometry

European Journal of Mechanics - B/Fluids, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kádár, Roland, Balan, Corneliu
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Diffusion in the transient dynamic response regime

Physics Letters A, 1980
Abstract An ensemble Monte Carlo approach is used to calculate the diffusion of a pulse of carriers in GaAs. On short-time scales, comparable to the relaxation times, the non-stationary diffusion process is non-markovian in space and appears not to obey a stationary-state definition of the Einstein relation.
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Transient Regimes Analysis for a Diesel Engine

Advanced Materials Research, 2013
A computer analysis has been developed for studying the energy and exergy performance of an direct-injection, naturally-aspirated diesel engine operating under transient load or speed conditions. The model is validated at steady-state operation and incorporates many novel features for simulating the transient response and analyzing all of the engine ...
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Electromagnetic Analysis of Superconducting Cables and Joints in Transient Regime

IEEE Transactions on Appiled Superconductivity, 2004
The paper deals with the electromagnetic analysis of the superconducting multistrand cables used to manufacture magnets for fusion research. An analysis method is described, in which the cable is represented as an equivalent lumped network, whose parameters are automatically computed starting from the cable geometrical data.
BELLINA, Fabrizio, P. BETTINI, TREVISAN, Francesco   +2 more
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