Experimental investigation of the transitional bronchial velocity distribution using stereo scanning PIV
Experimental investigation of the transitional bronchial velocity distribution using stereo scanning PIV
复制标题
使用立体扫描 PIV 进行移行支气管速度分布的实验研究
DOI:
10.1007/s00348-011-1103-5
复制
发表时间:
2012
影响因子:
2.4
通讯作者:
SchröderW.
中科院分区:
文献类型:
--
作者:
Schröder;van Overbrüggen;SchröderW.
An experimental analysis of the unsteady flow field in a realistic, transparent model of the human lung is presented. The model consists of the bronchial tree up to the third generation of bifurcation. The spatial focus is on the second bifurcation between the right main bronchus and the subsequent lobe bronchi, whereas the temporal focus is on the transition from inspiration to expiration. Due to the highly three-dimensional and unsteady character of the flow field, time-resolved 3D-3C measurements are performed using quasi-volumetric stereo scanning particle-image velocimetry. The measurements cover the total bronchial cross-section and are taken for two Womersley numbers of α1= 3.4 and α2= 4.2 at one peak Reynolds number ofReD= 1,420, representing breathing at rest. The temporal and spatial development of the flow field is presented for three temporal states in six parallel planes. The measurements show the development of vortical structures of varying size and location. An increased mass flux into the right superior bronchus for α2, a frequency-dependent phase shift of the flow structures, and a heterogeneous outflow at the beginning of the expiration phase are evidenced.
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影响因子:
2.4
作者:
Hori, T;Sakakibara, J
通讯作者:
Sakakibara, J
影响因子:
2.1
作者:
T. Martonen;X. Guan;R. Schreck
通讯作者:
R. Schreck
DOI:
10.2495/dne-v5-n4-335-353
发表时间:
2010
影响因子:
--
作者:
Georg Eitel;Thomas Soodt;Wolgang Schröder
通讯作者:
Wolgang Schröder
影响因子:
2.4
作者:
Freitas, Rainhill K.;Schroeder, Wolfgang
通讯作者:
Schroeder, Wolfgang
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
A. Ramuzat;M. Riethmuller
通讯作者:
M. Riethmuller