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 present paper shows how vertical actuation alone may be used to effectively control the spatial distribution of mobile vehicles (“balloons” in air, or “drifters” in water) in vertically-stratified background flows. Applying iterative, adjoint-based, model predictive control (MPC) techniques coupled with linear quadratic regular (LQR) feedback, agent trajectories and feedback control strategies...
Current CFD simulation studies of large data centers cannot model the detailed geometries of the perforated tiles due to grid size limitation. These studies often assume that the tile flow can be modeled as constant velocity based on a fully open tile. In this case, mass flux is enforced at the expense of under-predicting momentum flux; the error in momentum flux can be as high as a factor of four...
High density racks are becoming increasingly common in modern datacenters. The cold air distribution to high density racks has been a major challenge in the data center thermal design. Generally, the cold air is supplied through perforated tiles placed in front of the racks. Previous literature has focused more on large scale air distribution with in the data center rather than detailed air distribution...
Because of the gravitational differentiation of the fluid, gas and water are usually stratified in the highly inclined or horizontal gas wells. Electromagnetic tomography can identify the mixed fluid flow pattern based on the electrical property differences between gas and water by using electrode arrays to scan. Firstly, we calculate the responses of the combination of the electrodes to the different...
Tthe first objective of our research is to validate numerical methods that are capable of modeling complex physics, such as (i) spray sheet and jet formation; (ii) air entrainment and bubble generation; and (iii) strong free-surface turbulence interactions with large amplitude breaking waves. The second objective of our research is to provide design support for assessing the performance and signatures...
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.