Temat: Taylor dispersion - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Two-dimensional model of fluid flow and distribution of nutrient concentration in a microfluidic device
Autorzy:: Wroniszewski, P.
Tematy:: microfluidic device
lab-on-a-chip
advection-diffusion equation
Taylor dispersion; Pokaż więcej
Wydawca:: Politechnika Gdańska
Powiązania:: https://bibliotekanauki.pl/articles/1934016.pdf Link otwiera się w nowym oknie
Opis:: During the past few years, the process of miniaturisation in the field of biochemical laboratory equipment led to the introduction of the so-called "lab-on-a-chip" microdevices, which combine separate functional units into a complex, multifunctional apparatus. Fluid dynamics plays an essential role in the development of such equipment, since frequently the major part of chemical analysis is based on soluble analytes. In this work, we consider a device for the analysis of cell growth under different conditions. In this device, dozens of cell spots absorb the nutrient (analyte) from the liquid medium. The concentration of the analyte must be strictly controlled to maintain a specific microenvironment. A two-dimensional model for the flow field and the distribution of concentration of the analyte is developed taking into account the geometrical shape of the spot with a simplified absorption model. The dependence of the results on the controlling parameters is investigated in order to determine the influence of the presence of the cell spot on the distribution of the analyte.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of electric field on dispersion of a solute in an MHD flow through a vertical channel with and without chemical reaction
Autorzy:: Umavathi, J. C.
Kumar, J. P.
Gorla, R. S. R.
Gireesha, B. J.
Tematy:: dyspersja Taylora
magnetohydrodynamika
reakcja chemiczna
Taylor dispersion
immiscible fluids
conducting fluid
MHD
chemical reaction; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/265686.pdf Link otwiera się w nowym oknie
Opis:: The longitudinal dispersion of a solute between two parallel plates filled with two immiscible electrically conducting fluids is analyzed using Taylor’s model. The fluids in both the regions are incompressible and the transport properties are assumed to be constant. The channel walls are assumed to be electrically insulating. Separate solutions are matched at the interface using suitable matching conditions. The flow is accompanied by an irreversible first-order chemical reaction. The effects of the viscosity ratio, pressure gradient and Hartman number on the effective Taylor dispersion coefficient and volumetric flow rate for an open and short circuit are drawn in the absence and in the presence of chemical reactions. As the Hartman number increases the effective Taylor diffusion coefficient decreases for both open and short circuits. When the magnetic field remains constant, the numerical results show that for homogeneous and heterogeneous reactions, the effective Taylor diffusion coefficient decreases with an increase in the reaction rate constant for both open and short circuits.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Statistics of Fragment Dispersion by Explosion in a Fragment Generator Warhead
Autorzy:: Dhote, K. D.
Murthy, K. P. S.
Rajan, K. M.
Sucheendran, M. M.
Tematy:: fragment generator warhead
Taylor angle
fragment spatial dispersion
projection angle scatter
Shapiro-Wilk test; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Powiązania:: https://bibliotekanauki.pl/articles/358908.pdf Link otwiera się w nowym oknie
Opis:: Understanding the dispersion characteristics of fragments is essential for precise planning of the end game and the neutralization of targets using directional fragment generator warheads (FGW). The authors have carried out experiments to study the spatial dispersion of the fragments in two configurations of FGWs having a circular shaped fragment generating surface. In this paper, the dispersion of the fragments is quantified using the mean and standard deviation of the projection angle. Using the Shapiro-Wilk test, it is verified that dispersion in the projection angle follows a normal distribution. The dispersion of the peripheral fragments is higher due to edge effects. A steeper variation in projection angles is observed for fragments placed at a radial distance greater than 0.7 times the explosive charge radius. These observations are in agreement with the results of Held (1988) for a square shaped fragment generating surface.
Dostawca treści:: Biblioteka Nauki

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