Evolution of Gaussian wave packets in capillary jets.
Evolution of Gaussian wave packets in capillary jets.
复制标题
毛细管射流中高斯波包的演化。
DOI:
10.1103/physreve.100.053111
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
García FJ
中科院分区:
文献类型:
--
作者:
García FJ
A temporal analysis of the evolution of Gaussian wave packets in cylindrical capillary jets is presented through both a linear two-mode formulation and a one-dimensional nonlinear numerical scheme. These analyses are normally applicable to arbitrary initial conditions but our study focuses on pure-impulsive ones. Linear and nonlinear findings give consistent results in the stages for which the linear theory is valid. The inverse Fourier transforms representing the formal linear solution for the jet shape is both numerically evaluated and approximated by closed formulas. After a transient, these formulas predict an almost Gaussian-shape deformation with (i) a progressive drift of the carrier wave number to that given by the maximum of the Rayleigh dispersion relation, (ii) a progressive increase of its bell width, and (iii) a quasiexponential growth of its amplitude. These parameters agree with those extracted from the fittings of Gaussian wave packets to the numerical simulations. Experimental results are also reported on near-Gaussian pulses perturbing the exit velocity of a 2-mm diameter water jet. The possibility of controlling the breakup location along the jet and other features, such as pinch-off simultaneity, are demonstrated.
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DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
H. González;P. A. Vazquez;F. J. García;Josefa Guerrero
通讯作者:
Josefa Guerrero
影响因子:
1.3
作者:
H. C. Lee
通讯作者:
H. C. Lee
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
A. Green
通讯作者:
A. Green
影响因子:
3.7
作者:
Josefa Guerrero;H. González;F. J. García
通讯作者:
F. J. García
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
H. González;F. J. García
通讯作者:
F. J. García