Results 91 to 100 of about 3,814,145 (201)

Efficient Prediction of Multidomain Flow and Transport in Hierarchically Structured Porous Media

Water Resources Research, 2018
Structural hierarchy is a fundamental characteristic of natural porous media. Yet it provokes one of the grand challenges for the modeling of fluid flow and transport since pore‐scale structures and continuum‐scale domains often coincide independent of ...
Thomas Ritschel, Steffen Schlüter, John Maximilian Köhne, Hans‐Jörg Vogel, Kai Uwe Totsche   +4 more
doaj   +1 more source

Applications to Biological Networks of Adaptive Hagen-Poiseuille Flow on Graphs

, 2023
Physarum polycephalum is a single-celled, multi-nucleated slime mold whose body constitutes a network of veins. As it explores its environment, it adapts and optimizes its network to external stimuli. It has been shown to exhibit complex behavior, like solving mazes, finding the shortest path, and creating cost-efficient and robust networks.
openaire   +2 more sources

New Linear Theory of Hydrodynamic Instability of the Hagen-Poiseuille Flow

, 2011
New condition Re>Re_th_min=124 of linear (exponential) instability of the Hagen-Poisseuille (HP) with respect to extremely small by magnitude axially-symmetric disturbances of the tangential component of the velocity field is obtained. For this, disturbances must necessarily have quasi-periodic longitude variability (not representable as a Fourier ...
Chefranov, S. G., Chefranov, A. G.
openaire   +2 more sources

Intracranial pressure-flow relationships in traumatic brain injury patients expose gaps in the tenets of models and pressure-oriented management

Frontiers in Physiology
Background: The protocols and therapeutic guidance established for treating traumatic brain injury (TBI) in neurointensive care focus on managing cerebral blood flow (CBF) and brain tissue oxygenation based on pressure signals.
J. N. Stroh, J. N. Stroh, Brandon Foreman, Brandon Foreman, Tellen D. Bennett, Tellen D. Bennett, Jennifer K. Briggs, Soojin Park, Soojin Park, David J. Albers, David J. Albers, David J. Albers   +11 more
doaj   +1 more source

Pressure drop of partially blocked hagen-poiseuille flow using CFD simulation

, 2020
Piping serves as an important pillar in most of the engineering applications while the quantification on the pressure drop due to various factors is always the central issue of efficient piping maintenance and design.
Jawatankuasa Kerja PSM UMP
core  

A bio-fabricated tesla valves and ultrasound waves-powered blood plasma viscometer

Frontiers in Bioengineering and Biotechnology
Introduction: There is clinical evidence that the fresh blood viscosity is an important indicator in the development of vascular disorder and coagulation.
Wenqin Chen, Mao Xia, Wentao Zhu, Zhiye Xu, Bo Cai, Han Shen   +5 more
doaj   +1 more source

Observation of laminar-turbulent transition of a yield stress fluid in Hagen-Poiseuille flow

, 2009
We investigate experimentally the transition to turbulence of a yield stress shear-thinning fluid in Hagen-Poiseuille flow. By combining direct high-speed imaging of the flow structures with Laser Doppler Velocimetry (LDV), we provide a systematic ...
BURGHELEA, T., Frigaard, I. A., Guezel, Bülent, Martinez, D. M., T. BURGHELEA, D. M. MARTINEZ, B. GÜZEL, I. A. FRIGAARD   +7 more
core   +1 more source

Computational Methodology and Experimental Validation of Porous Medium Resistance Coefficients for Two-Stage Brush Seal Based on the Three-Dimensional Tube Bundle Model

Aerospace
To address the problems where the resistance coefficients of the two-stage brush seal porous medium model rely on experimental calibration and the resistance characteristics of each stage are difficult to distinguish, this paper proposes a method without
Jiachen Sun, Dan Sun, Yongjuan Jing, Ling Zhang, Shilu Liu, Bo Peng   +5 more
doaj   +1 more source

A dynamic non-linear flow model coupling temperature influence

Youqi dizhi yu caishoulu
The existing non-linear flow model does not consider the influence of temperature change on the non-linear flow law. Therefore， based on the capillary flow model， the Hagen-Poiseuille equation， and the boundary layer theory， as well as the influence of ...
LIU Xiuwei, WANG Xing, CHENG Shiqing, ZHANG Fengbo, WANG Yang   +4 more
doaj   +1 more source

Early Works on thc Hagen-Poiscuillc Flow [PDF]

This paper introduces to the carly pionecrs in the field of laminar now described by the Hagen Poiseuille law. After giving some biographical information, the experimental setups are brie11y explained and the original data are given in thc form of ...
HITZER, Eckhard MS
core   +1 more source