Results 41 to 50 of about 42,197 (166)

On Phase Asymmetries in Oscillatory Pipe Flow [PDF]

, 2016
We present results from direct numerical simulations (DNS) of oscillatory pipe flow at several dimensionless frequencies Wo = {6.5, 13, 26} and one fixed shear Reynolds number Re_τ = 1440. Starting from a fully-developed turbulent velocity field at that Re_τ, the oscillatory flow either relaminarises or reaches a conditionally turbulent or strongly ...
Feldmann, Daniel, Wagner, Claus
openaire   +2 more sources

Characteristics of self-induced flapping jet from a rectangular nozzle

Nihon Kikai Gakkai ronbunshu, 2014
Turbulent jets are utilized in various industrial devices such as combustors and ejectors. To control jets and enhance mixing, several devices have been developed, and mixing process also has been studied.
Yoshihisa KATO, Makoto KANAMORI, Shigeki IMAO, Satoshi KIKUCHI, Yasuaki KOZATO   +4 more
doaj   +1 more source

Oscillatory Disturbed Flow Enhances Inflammatory and Oxidative Stress Markers in Endothelial Cells

Methods and Protocols
Hemodynamics significantly impact the biology of endothelial cells (ECs) lining the blood vessels. ECs are exposed to various hemodynamic forces, particularly frictional shear stress from flowing blood.
Maram Hasan, Onur Mutlu, Munshi Sajidul Islam, Samar Shurbaji, Ruba Sulaiman, Yasmin Elsharabassi, Abdelali Agouni, Huseyin C. Yalcin   +7 more
doaj   +1 more source

Multiomic Reference Map of Endothelial Mechanosensitive Pathways Under Athero‐ and Erosion‐Prone Flow

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Background Atherosclerosis develops at arterial sites exposed to disturbed flow, whereas plaque rupture and plaque erosion predominantly occur in regions subjected to elevated flow. The impact of elevated flow on regulation of endothelial gene expression
Giulio Vidotto, Sara Luzzi, Jonathan D. Humphries, Robert Beal, David G. McVey, Christopher P. Nelson, Thomas R. Webb, Martin J. Humphries, Graham R. Smith, Stephen J. White   +9 more
doaj   +1 more source

Steady Streaming Induced by Asymmetric Oscillatory Flows over a Rippled Bed

Journal of Marine Science and Engineering, 2020
The flow induced by progressive water waves propagating over a rippled bed is reproduced by means of the numerical solution of momentum and continuity equations to gain insights on the steady streaming induced in the bottom boundary layer.
Pietro Scandura, Carla Faraci, Paolo Blondeaux   +2 more
doaj   +1 more source

DNA Molecules in Microfluidic Oscillatory Flow [PDF]

Macromolecules, 2005
The conformation and dynamics of a single DNA molecule undergoing oscillatory pressure-driven flow in microfluidic channels is studied using Brownian dynamics simulations, accounting for hydrodynamic interactions between segments in the bulk and between the chain and the walls. Oscillatory flow provides a scenario under which the polymers may remain in
Y-L, Chen, M D, Graham, J J, de Pablo, K, Jo, D C, Schwartz   +4 more
openaire   +2 more sources

Linear and Weakly Nonlinear Stability of Thermo-Solutal Magnetoconvective Chemically Reacting Couple Stress Fluid in Porous Medium [PDF]

International Journal of Mathematical, Engineering and Management Sciences
The aim of the current study is to investigate the stability analysis in case of the linear as well as nonlinear of a thermo-solutal chemically reactive couple stress fluid under uniform magnetic field convection.
S. Kapoor, A. K. Sahoo, V. Dabral
doaj   +1 more source

Couple stress fluid flow due to slow steady oscillations of a permeable sphere

Nonlinear Engineering, 2020
The study of oscillating flow of a Couple Stress fluid past a permeable sphere is considered. Analytical solution for the flow field in terms of stream function is obtained using modified Bessel functions.
Aparna P., Padmaja P., Pothanna N., Ramana Murthy J.V.   +3 more
doaj   +1 more source

P10 Oscillatory Flow Patterns in Peripheral Conduit Artery are Related to Central Arterial Stiffness in Healthy Subjects

Artery Research, 2020
Background: Studies in endothelial cell cultures show that oscillating flow pattern leads to endothelial dysfunction [1]. The only factor known to contribute towards oscillatory flows is peripheral arterial conductance [2].
Smriti Badhwar, Dinu Chandran, Ashok Jaryal, Rajiv Narang, Chetan Patel, Kishore Kumar Deepak   +5 more
doaj   +1 more source

EFFECT OF FLOW IRREGULARITY ON OSCILLATORY BOUNDARY LAYER FLOW [PDF]

Coastal Engineering Proceedings, 2014
The paper reports on new oscillatory flow tunnel experiments in which detailed measurements have been made of boundary layer velocities for full-scale regular and irregular oscillatory flows over sand-rough and gravel-rough fixed beds. The irregular flows were generated by amplitude modulation of the corresponding regular flows, to give same free ...
Bhawanin, M., O' Donoghue, T., van der A, D.A., Ribberink, Jan S.   +3 more
openaire   +2 more sources