Wave packet analysis and break-up length calculations for an accelerating planar liquid jet
Wave packet analysis and break-up length calculations for an accelerating planar liquid jet
复制标题
加速平面液体射流的波包分析和破碎长度计算
DOI:
10.1088/0169-5983/44/1/015503
复制
发表时间:
2012
影响因子:
1.5
通讯作者:
Turner M
中科院分区:
文献类型:
--
作者:
Turner M
This paper examines the process of transition to turbulence within an accelerating planar liquid jet. By calculating the propagation and spatial evolution of disturbance wave packets generated at a nozzle where the jet emerges, we are able to estimate break-up lengths and break-up times for different magnitudes of acceleration and different liquid to air density ratios. This study uses a basic jet velocity profile that has shear layers in both air and the liquid either side of the fluid interface. The shear layers are constructed as functions of velocity which behave in line with our CFD simulations of injecting diesel jets. The non-dimensional velocity of the jet along the jet centre-line axis is assumed to take the form V (t)= tanh (at), where the parameter a determines the magnitude of the acceleration. We compare the fully unsteady results obtained by solving the unsteady Rayleigh equation to those of a quasi-steady jet to determine when the unsteady effects are significant and whether the jet can be regarded as quasi-steady in typical operating conditions for diesel engines.
登录
查看更多内容
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
J. Landero;A. P. Watkins
通讯作者:
A. P. Watkins
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
J. Kubitschek;P. Weidman
通讯作者:
P. Weidman
DOI:
--
发表时间:
1961
期刊:
影响因子:
--
作者:
S. Shen
通讯作者:
S. Shen
影响因子:
3.7
作者:
M. Turner;J. Healey;S. Sazhin;R. Piazzesi
通讯作者:
M. Turner;J. Healey;S. Sazhin;R. Piazzesi
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
M. Gorokhovski;J. Jouanguy;C. Umr
通讯作者:
C. Umr