1. In apparatus for controlling gas flow between upstream and downstream zones, an improved flow control assembly comprising flow conduit means communicable with said zones and valving means movable in the conduit means to decrease the flow area of main orifice means formed by said assembly within ...
The subject of flow control is broadly introduced in this first chapter, leaving much of the details to the subsequent chapters of the book. The ability to actively or passively manipulate a flow field to effect a desired change is of immense technologic
Cascade wind tunnel experiments were carried out concerning the influence of aspect ratios, incidence, turning angles and outer endwall divergent angles in order to unveil the evolution mechanism of secondary flow losses in turbine cascades without end clearance. Some methods for controlling the ...
Another important mechanism of energy dissipation is associated with the friction between the fluid flow and the solid surfaces. The energy losses due to friction, which generally increase with the square of flow rate, may depend directly either on the Reynolds number and/or on the roughness of ...
Specialized nerve cells, known as somatostatin-expressing (Sst) interneurons, in the outer part of the mammalian brain (or cerebral cortex)—play a key role in controlling how information flows in the brain when it is awake and alert. This is the finding of a study published online inScience...
While the inhibition of hydroxyapatite breakdown by osteoclasts is the main mechanism of action for bisphosphonates, it has been proposed that this class of antiresorptive drugs also acts on other cell types and inhibits apoptosis of osteoblasts and osteocytes44,45. As age-related changes in bone ...
The research in [42] provides a two-level hybrid SDN control mechanism for Internet of Things. In the mechanism, a routing protocol based on multi-hop clustering is used on the first level, and an SDN for managing the global network is leveraged on the second level. Compared to the SD-...
Nanotechnology has found its way to petroleum engineering, it is well-accepted path in the oil and gas industry to recover more oil trapped in the reservoir. But the addition of nanoparticles to a liquid can result in the simplest flow becoming complex. To understand the working mechanism, ther...
With sensor-to-actuator delay τ and a zero-order-hold mechanism with sampling period h∈R, u(t) becomes piecewise constant in the intervals t∈[kh+τ,(k+1)h+τ] for k∈Z≥0. Image-processing workloads may vary, e.g., depending on image content. In Fig. 2, for example, the ...
Sketch of the core mechanism of the Rábai model (a). Concept of the geometrical approximation used in the simulations (b). Snapshots of F (filled diamond), M1 (open square), and M2 (filled square) stationary spatial states (c–e) and consecutive snapshots of two types of spatiotemporal ...