Track topics on Twitter Track topics that are important to you
On microstructured hydrophobic surfaces, geometrical patterns may lead to the appearance of a superhydrophobic state, where gas bubbles at the surface can have a strong impact on the fluid flow along such surfaces. In particular, they can strongly influence a detected slip at the surface. We present two-phase lattice Boltzmann simulations of a flow over structured surfaces with attached gas bubbles and demonstrate how the detected slip depends on the pattern geometry, the bulk pressure, or the shear rate. Since a large slip leads to reduced friction, our results give assistance in the optimization of microchannel flows for large throughput.
MTT Agrifood Research Finland, FI-31600 Jokioinen, Finland.
This article was published in the following journal.
Name: Journal of physics. Condensed matter : an Institute of Physics journal
In this paper, we present a review of the most important techniques used to measure the slip length of gas flow on isothermal surfaces. First, we present the famous Millikan experiment and then the ro...
We study the flow of a pressure-driven foam through a straight channel using numerical simulations, and examine the effects of a tuneable attractive potential between bubbles. We show that the effect ...
In spite of lots of attempts, polymer dynamics under fast flow still remains unrevealed. One of the unsolved issues is the insensitivity of end-to-end relaxation of entangled polymers to shear reporte...
A thermodynamic analysis of the size, shape, and stability of nanobubbles is carried out by modifying classical nucleation theory to include the supersaturation-dependence of the surface tension. It i...
Drag reduction was found in polydimethylsiloxane (PDMS) microchannels when the flow was pulled by depressurization at the inlet, and it was attributed to the formation of the bubbles on the PDMS surfa...
This is a proof of concept study that will evaluate the feasibility of a vapor nanobubble technology (MalariSense) for malaria diagnostics. The MalariSense technology will use a highly inn...
The purpose of this study is to monitor the renal function of patients who have an antibiotic laden spacer in place to treat an infected hip or knee arthroplasty.
CFD simulations in this study provide detailed hemodynamics information, which cannot be obtained from cardiac images alone. We hypothesize that our proposed simulations will provide stron...
Communication and teamwork failures are the leading causes of errors in healthcare settings. In situ mock code simulations are a potential means to train team-based skills using simulatio...
The aim of this study is to evaluate the efficacy of oral hygiene orientation singly, compared to resin-based sealants in controlling occlusal cavitated enamel lesions on primary and perma...
A replica technique in which cells are frozen to a very low temperature and cracked with a knife blade to expose the interior surfaces of the cells or cell membranes. The cracked cell surfaces are then freeze-dried to expose their constituents. The surfaces are now ready for shadowing to be viewed using an electron microscope. This method differs from freeze-fracturing in that no cryoprotectant is used and, thus, allows for the sublimation of water during the freeze-drying process to etch the surfaces.
A procedure to increase the flow of blood to the MYOCARDIUM by creating transmural channels in the heart wall via the application of laser pulses to epicardial or endocardial surfaces.
The amount of PLASMA that perfuses the KIDNEYS per unit time, approximately 10% greater than effective renal plasma flow (RENAL PLASMA FLOW, EFFECTIVE). It should be differentiated from the RENAL BLOOD FLOW; (RBF), which refers to the total volume of BLOOD flowing through the renal vasculature, while the renal plasma flow refers to the rate of plasma flow (RPF).
The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY.
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.