Temat: pressure difference - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effects of pressure work over a semi-infinite vertical oscillating cylinder
Autorzy:: Sarojini, A.
Palani, G.
Powiązania:: https://bibliotekanauki.pl/articles/1839892.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: cylinder
konwekcja naturalna
metoda Cranka-Nicolsona
finite difference
pressure work
oscillating
skin friction
Opis:: An arithmetical methodology is used to study natural convection with properties of pressure work over a semi-infinite vertical oscillating cylinder. The governing partial differential equations are set up and the resulting equations are changed into a non-dimensional form using the proper non-dimensional quantities. The set of non-dimensional partial differential equations is solved arithmetically using a well-organized method known as the Crank-Nicolson method. The velocity, as well as temperature profiles for different values of parameters are studied with the assistance of graphs.
Źródło:: International Journal of Applied Mechanics and Engineering; 2021, 26, 1; 215-225
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Roughness effects of textured surfaces in hydrodynamic lubrication
Autorzy:: Bahi, Youssef
El Gadari, Mhammed
Rahmoune, Miloud
Powiązania:: https://bibliotekanauki.pl/articles/2174176.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: tekstura
chropowatość
tarcie
ciśnienie
finite difference
texture
roughness
HD pressure
lifting force
friction
leakage
Opis:: Several studies have been conducted to improve and model the lubricated contact between surfaces. The main subjects were defining the hydrodynamic parameters to reduce energy losses and protect the environment. Some of the proposed models have studied the effect of textures in hydrodynamic lubrication and have proved that adapted shapes and geometries can improve the performance of lubricated contacts. A hydrodynamic model was developed by assuming the roughness of the textured surface and considering the cavitation in a steady-state regime. The proposed model was validated and compared with the analytical model of Fowell et al. [1]. Three different textures shapes were considered. The results showed that the rough-textured thrust affects the hydrodynamic performance significantly. Thus, by increasing the arithmetic roughness of textured surfaces, the hydrodynamic pressure, and the lifting force increase depending on the texture shape. A rougher surface slightly increases the friction force for the three considered textures.
Źródło:: International Journal of Applied Mechanics and Engineering; 2022, 27, 3; 9--21
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mathematical Model of Oxygen Transport in Cornea
Autorzy:: Avtar, Ram
Seth, Deepti
Kumar, Aadesh
Powiązania:: https://bibliotekanauki.pl/articles/1159714.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Crank-Nicoloson method
Michaelis-Menten kinetics
Oxygentransport
Thomas algorithm
finite difference
metabolism
oxygen consumption
pressure gradient
Opis:: The aim of present work is the development of a quasi-steady state model for the time course concentration profile describing the oxygen diffusion and consumption in a multilayered corneal tissue and investigation of the effect of various model parameters on the oxygen concentration for open and closed eyes. A simple mathematical model for the oxygen transport in multilayered corneal tissue was developed using Fick’s law of diffusion, Michaelis-Menten kinetics of metabolism. A Crank-Nicolson finite difference scheme of the equation describing the oxygen diffusion and consumption was written, in which spatial diffusive terms of the equation were approximated by central differences while the temporal terms were approximated by average of forward and backward time differences. A system of linear equations obtained from the Crank-Nicholson finite differences schemes was solved by the Thomas Algorithm in which successive improve approximate results are obtained.
Źródło:: World Scientific News; 2018, 113; 169-184
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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