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.
The increased interest in renewable energies has motivated the economic assessment study of different energy systems. Energy systems based on some natural renewable sources, as wind power, have the drawback of a random input, and then, peak user demand does not always coincide with peak power production. Regulation of output energy requires the introduction of new equipment with the capacity to store...
Forest fire is a natural disaster which can cause great economic losses and make eco-environment seriously disordered. In this paper, with cellular automata (CA) on its features of simulating complex phenomenon, the influential factors for forest fire are divided into two categories in accordance with the condition that whether the factors are alterable during burning. Forest fire spreading model...
Methane usually accumulates in roof falling zone forming severe hazard to production safety of coal mine. This paper adopts FLUENT, a computational fluid dynamics software, to simulate numerically local methane accumulation in roof falling zone. The research mainly discusses the influence of wind velocity on methane accumulation. It shows that the accumulated-methane concentration decreases with the...
In order to simulate the non-Gaussian fluctuating wind pressure with prescribed lower-order moments and its target power spectral density (PSD) function, the following framework is proposed in the present paper: Firstly, the PSD function of fluctuating wind pressure is deduced rigorously according to the relationship between the wind pressure and velocity; Then, an efficient yet practical method by...
A spaceborne Ku-band rotation fan-beam scatterometer (RFSCAT) for sea surface wind field measurement is introduced. The system will be operated in Ku-band frequency so that the dimension of its antenna can be shortened enough for a small satellite platform. Then a simulation method is adopted to analyze the performance of this system. The results show that the proposed scatterometer has a good performance...
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.