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Keywords: bifurcation
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Journal Articles
Article Type: Research Papers
J. Fluids Eng. July 2011, 133(7): 071001.
Published Online: July 8, 2011
... with generation number. Due to successive bifurcation, the flow velocity magnitude also decreases as the bronchiole diameter decreases from the upper to lower acini. As a result, fluid dynamic parameters such as Reynolds (Re) and Womersley (α) numbers progressively decrease with increasing generation number...
Journal Articles
Article Type: Research Papers
J. Fluids Eng. June 2011, 133(6): 061205.
Published Online: June 16, 2011
... parametric variation of model coefficients, such that either the growth rate of turbulent energy is altered; or such that the equilibrium solution bifurcates from healthy to decaying solution branches. For general use, parameters must be developed in coordinate invariant forms. Effects of rotation...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. May 2011, 133(5): 054502.
Published Online: June 7, 2011
...Seok-Won Kang; Debjyoti Banerjee In this study we implemented the network simulation techniques using macromodels (lumped models) for capillary driven flows in microfluidic networks. The flow characteristics in a flow junction, such as meniscus stretching and bifurcation, were studied...
Journal Articles
Article Type: Technical Briefs
J. Fluids Eng. August 2009, 131(8): 084501.
Published Online: July 24, 2009
...Z. Zhang; A. Fadl; C. Liu; D. M. L. Meyer; M. Krafczyk In this study, we investigate the phenomena of flow streaming in micro-/minichannel networks of symmetrical bifurcations using computer simulations with analytical validation. The phenomena of the flow streaming can be found in zero-mean...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2006, 128(5): 1101–1105.
Published Online: February 15, 2006
...L. Zhang; S. Balachandar Hopf bifurcation of steady base flow and onset of vortex shedding over a transverse periodic array of circular cylinders is considered. The influence of transverse spacing on critical Reynolds number is investigated by systematically varying the gap between the cylinders...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. July 2006, 128(4): 671–679.
Published Online: November 30, 2005
... bifurcation. The critical Reynolds number evaluated from the experiments and the simulations were compared to other values reported in the literature. Overall, side-wall proximity was found to enhance flow stability, thus sustaining laminar flow symmetry to higher Reynolds numbers. Last, and most important...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2005, 127(5): 1013–1020.
Published Online: September 19, 2005
...Ryuhei Yamaguchi; Takeshi Mashima; Hideaki Amagai; Hisashi Fujii; Toshiyuki Hayase; Kazuo Tanishita We report on flow phenomena such as wall shear stress and periodic oscillations that occur in the right-angle branch during laminar steady flow in the upstream trunk. The side-branch bifurcates from...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. September 2005, 127(5): 1021–1028.
Published Online: May 5, 2005
... of different calibration regimes, bifurcated by a sharp change in slope of the calibration curve. Based on the governing mechanics of this flow-meter, this paper explains this nonlinearity, and proposes its mathematical form. In particular, the bifurcation in calibration characteristics is attributed...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. May 2005, 127(3): 550–553.
Published Online: March 2, 2005
...Tianshu Liu This paper describes optimality principles for the design of an engineering bifurcating-tube tree consisting of the convection and diffusion zones to attain the most effective gas transport. An optimality principle is formulated for the diffusion zone to maximize the total diffusion...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. November 2003, 125(6): 952–962.
Published Online: January 12, 2004
... stress increases with increase in the magnetic field strength. It is also found that for symmetrically situated constrictions on the channel walls, the critical Reynolds number for the flow bifurcation (i.e., flow asymmetry) increases with increase in the magnetic field. Contributed by the Fluids...
Journal Articles
Article Type: Additional Technical Papers
J. Fluids Eng. June 2002, 124(2): 444–451.
Published Online: May 28, 2002
... to the channel geometry using the bifurcation diagram. Three channels, which are characterized by the contraction ratio, are studied and the critical Reynolds numbers are determined as 3075, 1355, and 1100 for channels with contraction ratios of 2, 4, and 8, respectively. The cause and mechanism explaining...
Journal Articles
Article Type: Technical Papers
J. Fluids Eng. December 2001, 123(4): 863–868.
Published Online: June 5, 2001
...Tianliang Yang; Liqiu Wang The bifurcation structure of viscous flow in curved square ducts is studied numerically and the stability of solutions on various solution branches is examined extensively. The solution structure of the flow is determined using the Euler-Newton continuation, the arc...