The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In actual oil-producing wells, most oil-pumping units are running in awful circumstance, and their location is irregularly, so the electric power control for the oil-pumping units is difficulty. The electric power correlate data of the oil-pumping units will cost much time for the professional to collect. Based on the analysis of actuality, an electric power control system design is introduced according...
The object of this article is to study the boundary layer appearing at large Reynolds number (small viscosity ɛ) incompressible Navier—Stokes Equation in a cylinder in space dimension three. These are Navier—Stokes equations linearized around a fixed velocity flow: the authors study the convergence as ɛ→ 0 to the inviscid type equations, the authors define the correctors needed to resolve the boundary...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.