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 order to solve the real-time calculation and analysis of S-parameter under different structures of microstrip line, the paper gives a method to establish a generic artificial neural network (ANN) model for S-parameter of microstrip line, which combines electromagnetic field numerical analysis with artificial neural network. By avoiding a large number of repetitive computing tasks, the model which...
The models of inventory replenishment policies for the deterioration items have been widely studied, and in most of the deterministic models, the in-transit deteriorating loss is not considered. But in operation management practice, transportation time is the major portion of the lead time, and the extent of spoilage of the fresh items is also influenced by the length of shipping time. The impact...
To develop heat exchangers with high efficiency and low energy consumption, four kinds of arc-type slotted fins are modeled and simulated in the paper. The four kinds of fins the paper selects are a combined slotted fin, a wide slotted fin, a narrow slotted fin and an improved one, respectively. Before numerical simulation for the slotted fins, physical model, computational domain, governing equations...
With Monte Carlo methods, the dynamics evolution of the two-dimensional fully frustrated XY model is investigated. The simulation focuses on the binder cumulant of the Kosterlitz-Thouless phase transition. From the dynamic scaling behavior of the Binder cumulant above the transition temperature TKT, the dynamic exponent z and static exponent η are determined.
The technology of leak protection and leak control while drilling through physical methods can be successfully applied based on studying the annulus' behaviour of the whole down hole flow field. In this paper, the model of sealing down hole while drilling through physical methods which will be used for CFD simulation is eatablished through reasonable simplification. Then running numerical simulation...
Air drilling is a drilling technology which uses air as the recirculated medium. There are many differences in the pressure distribution of circulatory system, the choice of drilling machinery and the configuration of drilling parameters between air drilling and other conventional drilling technologies. In this paper, we mainly focused on the force analysis and mechanism of rock chip in air drilling,...
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.