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Journal articles on the topic 'Transitional channel flow'

Author: Grafiati

Published: 6 September 2023

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1

Hager, Willi H. "Transitional Flow in Channel Junctions." Journal of Hydraulic Engineering 115, no. 2 (1989): 243–59. http://dx.doi.org/10.1061/(asce)0733-9429(1989)115:2(243).

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2

Kumar, Sampath G. "Transitional flow in channel junctions." Journal of Hydraulic Research 31, no. 5 (1993): 601–4. http://dx.doi.org/10.1080/00221689309498773.

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3

ELSNAB, J., J. KLEWICKI, D. MAYNES, and T. AMEEL. "Mean dynamics of transitional channel flow." Journal of Fluid Mechanics 678 (May 3, 2011): 451–81. http://dx.doi.org/10.1017/jfm.2011.120.

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The redistribution of mean momentum and vorticity, along with the mechanisms underlying these redistribution processes, is explored for post-laminar flow in fully developed, pressure driven, channel flow. These flows, generically referred to as transitional, include an instability stage and a nonlinear development stage. The central focus is on the nonlinear development stage. The present analyses use existing direct numerical simulation data sets, as well as recently reported high-resolution molecular tagging velocimetry measurements. Primary considerations stem from the emergence of the effe

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4

Manneville, Paul, and Masaki Shimizu. "Transitional Channel Flow: A Minimal Stochastic Model." Entropy 22, no. 12 (2020): 1348. http://dx.doi.org/10.3390/e22121348.

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In line with Pomeau’s conjecture about the relevance of directed percolation (DP) to turbulence onset/decay in wall-bounded flows, we propose a minimal stochastic model dedicated to the interpretation of the spatially intermittent regimes observed in channel flow before its return to laminar flow. Numerical simulations show that a regime with bands obliquely drifting in two stream-wise symmetrical directions bifurcates into an asymmetrical regime, before ultimately decaying to laminar flow. The model is expressed in terms of a probabilistic cellular automaton of evolving von Neumann neighborho

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5

Sahan, R. A., H. Gunes, and A. Liakopoulos. "A modeling approach to transitional channel flow." Computers & Fluids 27, no. 1 (1998): 121–36. http://dx.doi.org/10.1016/s0045-7930(97)00016-9.

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6

Piomelli, Ugo, and Thomas A. Zang. "Large-eddy simulation of transitional channel flow." Computer Physics Communications 65, no. 1-3 (1991): 224–30. http://dx.doi.org/10.1016/0010-4655(91)90175-k.

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7

Kashyap, Pavan, Yohann Duguet, and Olivier Dauchot. "Flow Statistics in the Transitional Regime of Plane Channel Flow." Entropy 22, no. 9 (2020): 1001. http://dx.doi.org/10.3390/e22091001.

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The transitional regime of plane channel flow is investigated above the transitional point below which turbulence is not sustained, using direct numerical simulation in large domains. Statistics of laminar-turbulent spatio-temporal intermittency are reported. The geometry of the pattern is first characterized, including statistics for the angles of the laminar-turbulent stripes observed in this regime, with a comparison to experiments. High-order statistics of the local and instantaneous bulk velocity, wall shear stress and turbulent kinetic energy are then provided. The distributions of the t

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8

Zagarola, Mark V., Alexander J. Smits, and George E. Karniadakis. "Heat transfer enhancement in a transitional channel flow." Journal of Wind Engineering and Industrial Aerodynamics 49, no. 1-3 (1993): 257–67. http://dx.doi.org/10.1016/0167-6105(93)90021-f.

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9

He, S., and M. Seddighi. "Turbulence in transient channel flow." Journal of Fluid Mechanics 715 (January 9, 2013): 60–102. http://dx.doi.org/10.1017/jfm.2012.498.

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AbstractDirect numerical simulations (DNS) are performed of a transient channel flow following a rapid increase of flow rate from an initially turbulent flow. It is shown that a low-Reynolds-number turbulent flow can undergo a process of transition that resembles the laminar–turbulent transition. In response to the rapid increase of flow rate, the flow does not progressively evolve from the initial turbulent structure to a new one, but undergoes a process involving three distinct phases (pre-transition, transition and fully turbulent) that are equivalent to the three regions of the boundary la

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10

Wirtz, R. A., and Weiming Chen. "Laminar-Transitional Convection From Repeated Ribs in a Channel." Journal of Electronic Packaging 114, no. 1 (1992): 29–34. http://dx.doi.org/10.1115/1.2905438.

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Velocimetry, heat transfer, and pressure drop experiments are reported for laminar/transitional air flow in a channel containing rectangular transverse ribs located along one channel wall. The geometry is intended to represent an array of low profile electronic packages. At fixed pumping power per unit channel volume, the heat transfer rate per unit volume is independent of rib-to-rib spacing and increases with decreasing wall-to-wall spacing. The fully developed, rib-average heat transfer coefficient is found to be linearly related to the maximum streamwise rms turbulence measured above the r

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11

Ligrani, P. M., and C. R. Hedlund. "Experimental Surface Heat Transfer and Flow Structure in a Curved Channel With Laminar, Transitional, and Turbulent Flows." Journal of Turbomachinery 126, no. 3 (2004): 414–23. http://dx.doi.org/10.1115/1.1738119.

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Heat transfer and flow structure are described in a channel with a straight portion followed by a portion with mild curvature at Dean numbers from 100 to 1084. The channel aspect ratio is 40, radius ratio is 0.979, and the ratio of shear layer thickness to channel inner radius is 0.011. The data presented include flow visualizations, and spanwise-averaged Nusselt numbers. Also included are time-averaged turbulence structural data, time-averaged profiles of streamwise velocity, spectra of longitudinal velocity fluctuations, and a survey of the radial time-averaged vorticity component. Different

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12

Garretón, Gonzalo, Lindley Maxwell, and Iván Cornejo. "Transition of the Flow Regime Inside of Monolith Microchannel Reactors Fed with Highly Turbulent Flow." Catalysts 13, no. 6 (2023): 938. http://dx.doi.org/10.3390/catal13060938.

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This paper investigates the flow behaviour of monolith microchannels. Specifically, the study characterizes the flow regime within in-series monolith channels where highly turbulent flow approaches them but inside of the channels, the Reynolds number is subcritical. Results from LES and a transitional RANS model are compared to those obtained when directly assuming laminar flow inside of the channels. A space-resolved model of channels placed in series and channel Reynolds numbers ranging from 50 to 300 are considered. The results show that the flow pattern in is almost identical in the two ch

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13

Majumdar, D., and C. H. Amon. "Oscillatory Momentum Transport Mechanisms in Transitional Complex Geometry Flows." Journal of Fluids Engineering 119, no. 1 (1997): 29–35. http://dx.doi.org/10.1115/1.2819114.

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This work reports direct numerical simulations of transitional flows in communicating channels. Above a critical Reynolds number, the flow becomes fluctuating and self-sustained with vortical motions temporally synchronized with channel traveling waves. The energy transfer mechanism between the mean and the fluctuating flow is investigated along with the distributions of oscillatory shear stress and transitional viscosity. The kinetic energy equation for the fluctuating velocity is solved from DNS data to evaluate the contributions of the production term, viscous dissipation, work of dynamic p

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14

Sahan, R. A., A. Liakopoulos, and H. Gunes. "Reduced dynamical models of nonisothermal transitional grooved-channel flow." Physics of Fluids 9, no. 3 (1997): 551–65. http://dx.doi.org/10.1063/1.869218.

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15

Wang, Sung-Ning, Ashwin Shekar, and Michael D. Graham. "Spatiotemporal dynamics of viscoelastic turbulence in transitional channel flow." Journal of Non-Newtonian Fluid Mechanics 244 (June 2017): 104–22. http://dx.doi.org/10.1016/j.jnnfm.2017.04.008.

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16

Masaharu, Matsubara, Miyazaki Makoto, Watanabe Kenta, Kvick Mathias, Lundell Fredrik, and Soderberg Daniel. "1222 Effect of nano-fibrillated cellulose suspension on transitional two-dimensional channel flow." Proceedings of the International Conference on Jets, Wakes and Separated Flows (ICJWSF) 2013.4 (2013): _1222–1_—_1222–5_. http://dx.doi.org/10.1299/jsmeicjwsf.2013.4._1222-1_.

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17

Guzmán, A. M., and C. H. Amon. "Dynamical flow characterization of transitional and chaotic regimes in converging–diverging channels." Journal of Fluid Mechanics 321 (August 25, 1996): 25–57. http://dx.doi.org/10.1017/s002211209600763x.

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Numerical investigation of laminar, transitional and chaotic flows in converging–diverging channels are performed by direct numerical simulations in the Reynolds number range 10 < Re < 850. The temporal flow evolution and the onset of turbulence are investigated by combining classical fluid dynamics representations with dynamical system flow characterizations. Modern dynamical system techniques such as timedelay reconstructions of pseudophase spaces, autocorrelation functions, fractal dimensions and Eulerian Lyapunov exponents are used for the dynamical flow characterization of laminar,

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18

Ilak, Miloš, and Clarence W. Rowley. "Modeling of transitional channel flow using balanced proper orthogonal decomposition." Physics of Fluids 20, no. 3 (2008): 034103. http://dx.doi.org/10.1063/1.2840197.

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19

Ting, D. S. K. "TEMPERATURE FLUCTUATION MEASUREMENTS FOR TRANSITIONAL FLOW IN A SQUARE CHANNEL." Experimental Heat Transfer 9, no. 4 (1996): 357–70. http://dx.doi.org/10.1080/08916159608946530.

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20

Baker, James, and Panagiotis D. Christofides. "Drag reduction in transitional linearized channel flow using distributed control." International Journal of Control 75, no. 15 (2002): 1213–18. http://dx.doi.org/10.1080/00207170210163631.

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21

ISHIBASHI, Tomohiro, Genta KAWAHARA, Masaki SHIMIZU, and Shingo MOTOKI. "Dissimilarity between heat and momentum transfer in transitional channel flow." Proceedings of Mechanical Engineering Congress, Japan 2019 (2019): J05117P. http://dx.doi.org/10.1299/jsmemecj.2019.j05117p.

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22

NISHIMURA, TATSUO, YOSHIHIKO KAJIMOTO, ATSUSHI TARUMOTO, and YUJI KAWAMURA. "Flow structure and mass transfer for a wavy channel in transitional flow regime." Journal of Chemical Engineering of Japan 19, no. 5 (1986): 449–55. http://dx.doi.org/10.1252/jcej.19.449.

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23

SCHÄFER, F., M. BREUER, and F. DURST. "The dynamics of the transitional flow over a backward-facing step." Journal of Fluid Mechanics 623 (March 6, 2009): 85–119. http://dx.doi.org/10.1017/s0022112008005235.

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The internal flow over a backward-facing step in the transitional regime (ReD = 6000) was studied based on direct numerical simulations. The predictions were carried out with the help of a finite-volume Navier–Stokes solver equipped with a co-visualization facility which allows one to investigate the flow dynamics at high temporal resolution. First, grid-induced oscillations were precluded by a careful grid design. Second, the strong influence of the velocity profile approaching the step was studied and outlined. The main objective, however, was to provide a comprehensive insight into the dyna

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24

Takeishi, Keisuke, Genta Kawahara, Hiroki Wakabayashi, Markus Uhlmann, and Alfredo Pinelli. "Localized turbulence structures in transitional rectangular-duct flow." Journal of Fluid Mechanics 782 (October 8, 2015): 368–79. http://dx.doi.org/10.1017/jfm.2015.546.

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Direct numerical simulations of transitional flow in a rectangular duct of cross-sectional aspect ratio $A\equiv s/h=1$–9 ($s$ and $h$ being the duct half-span and half-height, respectively) have been performed in the Reynolds number range $\mathit{Re}\equiv u_{b}h/{\it\nu}=650$–1500 ($u_{b}$ and ${\it\nu}$ being the bulk velocity and the kinematic viscosity, respectively) in order to investigate the dependence on the aspect ratio of spatially localized turbulence structures. It was observed that the lowest Reynolds number $\mathit{Re}_{T}$, estimated in a specific way, for localized (transien

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25

Ma, Jing-Tao, Yuan-Qing Xu, and Xiao-Ying Tang. "A Numerical Simulation of Cell Separation by Simplified Asymmetric Pinched Flow Fractionation." Computational and Mathematical Methods in Medicine 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/2564584.

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As a typical microfluidic cell sorting technique, the size-dependent cell sorting has attracted much interest in recent years. In this paper, a size-dependent cell sorting scheme is presented based on a controllable asymmetric pinched flow by employing an immersed boundary-lattice Boltzmann method (IB-LBM). The geometry of channels consists of 2 upstream branches, 1 transitional channel, and 4 downstream branches (D-branches). Simulations are conducted by varying inlet flow ratio, the cell size, and the ratio of flux of outlet 4 to the total flux. It is found that, after being randomly release

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26

Zerihun, Yebegaeshet T. "Non-Hydrostatic Transitional Open-Channel Flows from a Supercritical to a Subcritical State." Slovak Journal of Civil Engineering 29, no. 2 (2021): 39–48. http://dx.doi.org/10.2478/sjce-2021-0012.

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Abstract In this study, a depth-averaged numerical model was employed to investigate the two-dimensional flow features of transitional open-channel flows from a supercritical to a subcritical state. Compared to a shallow-water model, the proposed model incorporates supplementary terms to account for the effects of non-uniform velocity and non-hydrostatic pressure distributions. The model equation was solved numerically by means of the Adams–Bashforth–Moulton scheme. A wide variety of transitional open-channel flow problems such as hydraulic jumps was considered for assessing the suitability of

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27

Sanvicente, E., S. Giroux-Julien, C. Ménézo, and H. Bouia. "Transitional natural convection flow and heat transfer in an open channel." International Journal of Thermal Sciences 63 (January 2013): 87–104. http://dx.doi.org/10.1016/j.ijthermalsci.2012.07.004.

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28

Dipankar, A., and T. K. Sengupta. "Symmetrized compact scheme for receptivity study of 2D transitional channel flow." Journal of Computational Physics 215, no. 1 (2006): 245–73. http://dx.doi.org/10.1016/j.jcp.2005.10.018.

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29

Abad, Jorge D., Alejandro Mendoza, Kristin Arceo, et al. "Planform Dynamics and Cut-Off Processes in the Lower Ucayali River, Peruvian Amazon." Water 14, no. 19 (2022): 3059. http://dx.doi.org/10.3390/w14193059.

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The Ucayali River is one of the most dynamic large rivers in the world, with high rates of channel migration regularly producing cutoffs. In the lower portion of the Ucayali River, before its confluence to the Marañon River where the Amazon River is born, the increase in water and sediment discharge triggers bends with secondary channels (transitional stage from purely meandering to anabranching), which influence the planform migration rates and patterns of the sinuous channels. Based on remote sensing analysis, a comparison of planform dynamics of bends with and without secondary channels is

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30

TANAKA, Ichiro, Jiro SUZUKI, and Saburo YAMADA. "Heat Transfer and Flow Features of Intermittent Flow Structure Arising in Channel Flow for Transitional Regime." Proceedings of Conference of Kansai Branch 2017.92 (2017): 702. http://dx.doi.org/10.1299/jsmekansai.2017.92.702.

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31

Guo, Qiaozhen, Jinmiao Tan, Daoqing Li, et al. "Grain Size Curve Characteristics of 2nd Member of Sangonghe Formation in Qianshao Area and Its Indicative Significance of Hydrodynamic Environment." Applied Sciences 12, no. 19 (2022): 9852. http://dx.doi.org/10.3390/app12199852.

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There are mainly two sedimentary types of the 2nd member of Jurassic Sangonghe Formation (J1s2) in the Qianshao area: shallow-water delta and sandy debris flow. In order to accurately understand the characteristics and further identify the difference of sedimentary microfacies, the characteristics of the grain size curve are analyzed. The results show that the cumulative probability curve of sandstone particle size in the research area mainly includes two basic types: tractive current type and sandy debris flow type. The tractive current type is mainly developed in the shallow-water delta fron

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32

Burmistrov, A. V., S. I. Salikeev, and A. A. Raykov. "Simulation of Gas Flow in Channels with Variable Cross-Section at Different Flow Modes using Lattice Boltzmann Method (LBM)." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 6 (129) (December 2019): 105–15. http://dx.doi.org/10.18698/0236-3941-2019-6-105-115.

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All contact-free vacuum pumps operate in a very wide pressure range. Therefore, the calculation of flows through the slot channels is associated with the need to take into account the laws of all three modes of gas flow: viscous, transitional and molecular. Most of channels of contact-free pumps are formed by curved walls, which are slits of variable cross-section in the direction of gas flow, having a minimum gap in some place. The paper considers the basic methods of calculating flows in channels of variable cross-section: the Monte Carlo method for molecular mode, the numerical solution of

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33

Kordi, E., S. A. Ayyoubzadeh, M. Z. Ahmadi, and A. Zahiri. "Prediction of the lateral flow regime and critical depth in compound open channels." Canadian Journal of Civil Engineering 36, no. 1 (2009): 1–13. http://dx.doi.org/10.1139/l08-095.

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In this study, the common critical depth calculation in compound channels has been modified considering the effect of momentum transfer between the interface of a main channel and its floodplains. In noncorrected specific energy curves of a given slope, the flow is not necessarily entirely sub- or supercritical as it is in a single cross section and there is a possibility of both flow regimes at a certain stage, called the lateral mixed flow regimes, which makes the application of specific energy equation to determine the critical depth and transitional zone calculations questionable. In the p

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34

Lehmann, G. L., and J. Pembroke. "Forced Convection Air Cooling of Simulated Low Profile Electronic Components: Part 1—Base Case." Journal of Electronic Packaging 113, no. 1 (1991): 21–26. http://dx.doi.org/10.1115/1.2905361.

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Forced convection cooling of a simulated array of card-mounted electronic components has been investigated. An important feature of the simulated components is their relatively low profile (height/length = 0.058). Laboratory measurements of heat transfer rates resulting from convective air flow through a low aspect ratio channel are reported. The effect of variations in array position, channel spacing and flow rate is discussed. In the flow range considered laminar, transitional and turbulent heat transfer behavior have been observed. The behavior due to variations in flow rate and channel spa

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35

Nering, Konrad, and Krzysztof Nering. "Validation of Modified Algebraic Model during Transitional Flow in HVAC Duct." Energies 14, no. 13 (2021): 3975. http://dx.doi.org/10.3390/en14133975.

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Airflow occurring in a ventilation duct is characterized by low velocity and hence low Reynolds number. In these conditions, either a laminar, transitional or turbulent flow will occur. Different flow conditions result in different values of the friction coefficient. To achieve the transitional flow in numerical simulation, a modified algebraic model for bypass transition (modified k−ω) was used. Numerical simulation was validated using Particle Tracking Velocimetry (PTV) in the circular channel. The modified algebraic model consists of only two partial differential equations, which leads to m

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36

Yamaguchi, Hiroki, Pierre Perrier, Minh Tuan Ho, J. Gilbert Méolans, Tomohide Niimi, and Irina Graur. "Mass flow rate measurement of thermal creep flow from transitional to slip flow regime." Journal of Fluid Mechanics 795 (April 20, 2016): 690–707. http://dx.doi.org/10.1017/jfm.2016.234.

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Measurements of the thermal creep flow through a single rectangular microchannel connected to two tanks maintained initially at the same pressure, but at different temperatures, are carried out for five noble gas species, over a large range of pressure and for two temperature differences between the tanks. The time-dependent pressure variations in both cold and hot tanks are investigated, and the temperature-driven (thermal creep) mass flow rate between two tanks is calculated from these data for the rarefaction parameter ranging from the transitional to slip flow regime. The measured mass flo

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37

Beratlis, N., E. Balaras, B. Parvinian, and K. Kiger. "A Numerical and Experimental Investigation of Transitional Pulsatile Flow in a Stenosed Channel." Journal of Biomechanical Engineering 127, no. 7 (2005): 1147–57. http://dx.doi.org/10.1115/1.2073628.

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In the present paper, a closely coupled numerical and experimental investigation of pulsatile flow in a prototypical stenotic site is presented. Detailed laser Doppler velocimetry measurements upstream of the stenosis are used to guide the specification of velocity boundary conditions at the inflow plane in a series of direct numerical simulations (DNSs). Comparisons of the velocity statistics between the experiments and DNS in the post-stenotic area demonstrate the great importance of accurate inflow conditions, and the sensitivity of the post-stenotic flow to the disturbance environment upst

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38

Agrawal, Rishav, Henry C. H. Ng, David J. C. Dennis, and Robert J. Poole. "Investigating channel flow using wall shear stress signals at transitional Reynolds numbers." International Journal of Heat and Fluid Flow 82 (April 2020): 108525. http://dx.doi.org/10.1016/j.ijheatfluidflow.2019.108525.

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39

KLEWICKI, J., R. EBNER, and X. WU. "Mean dynamics of transitional boundary-layer flow." Journal of Fluid Mechanics 682 (July 19, 2011): 617–51. http://dx.doi.org/10.1017/jfm.2011.253.

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The dynamical mechanisms underlying the redistribution of mean momentum and vorticity are explored for transitional two-dimensional boundary-layer flow at nominally zero pressure gradient. The analyses primarily employ the direct numerical simulation database of Wu & Moin (J. Fluid Mech., vol. 630, 2009, p. 5), but are supplemented with verifications utilizing subsequent similar simulations. The transitional regime is taken to include both an instability stage, which effectively generates a finite Reynolds stress profile, −ρuv(y), and a nonlinear development stage, which progresses until t

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40

RANI, H. P., TONY W. H. SHEU, and ERIC S. F. TSAI. "Eddy structures in a transitional backward-facing step flow." Journal of Fluid Mechanics 588 (September 24, 2007): 43–58. http://dx.doi.org/10.1017/s002211200700763x.

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In the present study, flow simulation has been carried out in a backward-facing step channel defined by an expansion ratio of 2.02 and a spanwise aspect ratio of 8 to provide the physical insight into the longitudinal and spanwise flow motions and to identify the presence of Taylor–Görtler-like vortices. The Reynolds numbers have been taken as 1000 and 2000, which fall in the category of transitional flow. The present simulated results were validated against the experimental and numerical data and the comparison was found to be satisfactory. The simulated results show that the flow becomes uns

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41

Khan, Mohammad Amir, Nayan Sharma, Jaan H. Pu, et al. "Mid-Channel Braid-Bar-Induced Turbulent Bursts: Analysis Using Octant Events Approach." Water 14, no. 3 (2022): 450. http://dx.doi.org/10.3390/w14030450.

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In a laboratory, a model of a mid-channel bar is built to study the turbulent flow structures in its vicinity. The present study on the turbulent flow structure around a mid-channel bar is based on unravelling the fluvial fluxes triggered by the bar’s 3D turbulent burst phenomenon. To this end, the three-dimensional velocity components are measured with the help of acoustic doppler velocimetry (ADV). The results indicate that the transverse component of turbulent kinetic energy cannot be neglected when analyzing turbulent burst processes, since the dominant flow is three-dimensional around the

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42

Kuo, Chung-Chin, Wan-Yu Chen, and Ya-Chin Yang. "Block of Tetrodotoxin-resistant Na+ Channel Pore by Multivalent Cations." Journal of General Physiology 124, no. 1 (2004): 27–42. http://dx.doi.org/10.1085/jgp.200409054.

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Tetrodotoxin-resistant (TTX-R) Na+ channels are much less susceptible to external TTX but more susceptible to external Cd2+ block than tetrodotoxin-sensitive (TTX-S) Na+ channels. Both TTX and Cd2+ seem to block the channel near the “DEKA” ring, which is probably part of a multi-ion single-file region adjacent to the external pore mouth and is involved in the selectivity filter of the channel. In this study we demonstrate that other multivalent transitional metal ions such as La3+, Zn2+, Ni2+, Co2+, and Mn2+ also block the TTX-R channels in dorsal root ganglion neurons. Just like Cd2+, the blo

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43

YIMPRASERT, Sattaya, Kentaro KATO, P. Henrik ALFREDSSON, and Masaharu MATSUBARA. "Effects of polymer addition on transition and length scales of flow structures in transitional channel flow." Journal of Fluid Science and Technology 18, no. 1 (2023): JFST0021. http://dx.doi.org/10.1299/jfst.2023jfst0021.

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44

Lehmann, G. L., and R. A. Wirtz. "The Effect of Variations in Stream-Wise Spacing and Length on Convection From Surface Mounted Rectangular Components." Journal of Electronic Packaging 111, no. 1 (1989): 26–32. http://dx.doi.org/10.1115/1.3226504.

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The effect of variations in stream-wise spacing and component length on convection from rectangular, surface mounted components in a channel flow are reported. Component dimensions are the same order of magnitude as the channel wall-to-wall spacing. The channel Reynolds number, with air as the coolant, ranged from 670 to 3000. Flow visualization showed that under the above conditions the channel flow is transitional. The effect of variations in component stream-wise spacing on the level of turbulence in the channel and on the interaction between the core of the channel flow and the recirculati

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45

KANEKO, Shizuma, Takahiro TSUKAHARA, and Yasuo KAWAGUCHI. "G203 DNS study on energy budget for transitional channel flow with turbulent stripe." Proceedings of the Fluids engineering conference 2010 (2010): 545–46. http://dx.doi.org/10.1299/jsmefed.2010.545.

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46

Xia, Zhenhua, Yipeng Shi, and Yaomin Zhao. "Assessment of the shear-improved Smagorinsky model in laminar-turbulent transitional channel flow." Journal of Turbulence 16, no. 10 (2015): 925–36. http://dx.doi.org/10.1080/14685248.2015.1043131.

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47

Saito, Namiko, Dale I. Pullin, and Michio Inoue. "Large eddy simulation of smooth-wall, transitional and fully rough-wall channel flow." Physics of Fluids 24, no. 7 (2012): 075103. http://dx.doi.org/10.1063/1.4731301.

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48

Marques, Francisco, Alvaro Meseguer, Fernando Mellibovsky, and Patrick D. Weidman. "Extensional channel flow revisited: a dynamical systems perspective." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 473, no. 2202 (2017): 20170151. http://dx.doi.org/10.1098/rspa.2017.0151.

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Extensional self-similar flows in a channel are explored numerically for arbitrary stretching–shrinking rates of the confining parallel walls. The present analysis embraces time integrations, and continuations of steady and periodic solutions unfolded in the parameter space. Previous studies focused on the analysis of branches of steady solutions for particular stretching–shrinking rates, although recent studies focused also on the dynamical aspects of the problems. We have adopted a dynamical systems perspective, analysing the instabilities and bifurcations the base state undergoes when incre

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49

Ciptoadi, Prayitno. "PENGARUH JARAK ALUR TERHADAP KESTABILAN ALIRAN FLUIDA BERDENYUT DALAM SALURAN BERPENAMPANG SEGIEMPAT." ALE Proceeding 1 (July 17, 2021): 74–79. http://dx.doi.org/10.30598/ale.1.2018.74-79.

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The pulsatile fluid flow in a transverse grooved channel would become self-sustained oscillatory flow at a certain critical Reynold number. The critical Reynold number where laminar unsteady flow changed to unsteady transitional one depends on grooves distances. The objective of this research is to analyze the effect of grooves distances toward the vortex strength and the stability of the fluid flow. This research was done by implementing a closed square cross-section channel, where the bottom surface of the channel was semicircle grooved. The frequency of flow oscillation measurement was done

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50

Rogge, Alexander J., and Jae Sung Park. "On the Underlying Drag-Reduction Mechanisms of Flow-Control Strategies in a Transitional Channel Flow: Temporal Approach." Flow, Turbulence and Combustion 108, no. 4 (2021): 1001–16. http://dx.doi.org/10.1007/s10494-021-00305-7.

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