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 this paper, failure modes of hybrid sandwich structures (HSS) with V-type corrugated cores subjected to water impact are discussed. The dynamic responses and failure mechanism investigated using the LS_Dyna lagrange-Euler coupling techniques reveal that the face sheets undergo large stretching and bending deformation, while the core webs experience plastic bucking failure. The numerical simulation...
This paper construct a profile model with length and height of 40 m and 9 m respectively based on the two most difficult problems which are mine pressure and gas control to simulate the migration law of gas within the period weighting step of 15m, 20m, 25m in the three areas (0-6m, 6-12m, and after the region of 12m). The results show that the gas migrates to the workplace closing the not caving roof...
The large-diameter flat serpentine finned tube is often used in direct air-cooled condensers. The distribution of the air velocities and the temperatures in the serpentine finned tube were analyzed by using three-dimensional numerical simulation methods. The heat transfer coefficients in finned tubes were obtained, which were subsequently used to fit the relational formulas of the heat transfer coefficients...
The ventilation system is the basis to control the hazards in coal mine laneway. High reliability ventilation system can continuously convey fresh air into laneway , dilute the noxious gas, reduce disaster and ensure the mining productivity safe and effective. As we know that, many noxious gases in the coal mine laneway are compossible and their flowing states are complicated. In order to acquire...
According to characteristics of fully mechanized top-coal caving face and related survey date, a mathematical model of dust movement was derived from gas-solid two-phase flow theory. Numerical simulation of the dust concentration was made with CFD software FLUENT. The result matches well with the related survey date and shows that most of the dust move with the wind and little disperses at random...
Air drive reverse circulation bit interior fluid field analysis has relied on experiments for a long time. With the development of the computer, numerical simulation and emulation software brought many advantages contrasting the experiment. However, due to the complexity of the interior fluid field, few people have done the resolution calculation for it. In this article, through simplifying the air...
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.