Trapped vortex combustor (TVC) is a relatively new concept, having potential application in gas turbine engines. In this work, an attempt has been made to characterize the 2D twin cavity TVC ...

A new type of single-cavity vortex combustor with air blast atomisers is introduced in this paper. This study conducted a combustion experiment that detailed the influence of the mainstream ...

This work provides an overview of the aluminum (Al) recycling process, from the scrap upgrading to the melting process. Innovations and new trends regarding the Al recycling technologies are highlighted. Aluminum recycling offers advantages in terms of environmental and economic benefits. The presence of deleterious impurities in recycled …

A trapped vortex cavity with a radial V-gutter flameholder is adopted to expand the flame stability of an augmentor. ... The Eulerian filtered compressible transport equations are solved for the ...

The material is crushed in a crushing cavity, between an external fixed element (bowl liner) and an internal moving element (mantle) mounted on an oscillating shaft assembly. An eccentric shaft rotated by a gear and pinion produces the oscillating movement of the main shaft. ... This generates a vortex in the cyclone, with a low …

Numerical study of vortex-induced autorotation of an elliptic blade in lid-driven cavity flow; Predicting the unsteady states of 2D and 3D lid-driven cavities …

1 First the material flows into the vortex crushing cavity from the feed hopper. The high-speed rotating impeller crushes the material scattered around the impeller in the form of an umbrella. ... The characteristics of materials: Crushed material hardness, strength, humidity, viscosity, composition, etc. b. Fineness of finished sand: The lower ...

1.The unique structure contains large vortex crushing cavity and three crushing sections(P,S,T section) and create higher crushing efficiency and productivity. 2. It has the features of unique structure, easy operation, high-efficiency and saving energy, good product shape-cubic like, adjustable discharge size, simplifying crushing process ...

The teeth are multifunctional appendages that essential in basic human functions, like eating and speech. Teeth are composed of multiple unique tissues with varying density and hardness that allows them to tolerate the significant forces and wear of mastication. They are attached to the maxilla (upper jaw) and the mandible (lower jaw) …

The tooth is one of the most individual and complex anatomical as well as histological structures in the body. The tissue composition of a tooth is only found within the oral cavity and is limited to the dental structures. Each tooth is paired within the same jaw, while the opposing jaw has teeth that are classified within the same category. …

Instead, it is a jelly-like substance that fills the cavity left by the trabecular network of bone. Bone marrow accounts for about 4 – 5% of the total body weight of an individual. ... In order to adequately assess the composition of the bone marrow, clinicians perform either a bone marrow biopsy or bone marrow aspiration. ...

By adding an SPP in the system, which will change the topological charge of the composing modes by 1 or − 1, we can achieve the vortex mode composition ± 1 and 3 or ∓ 1 and − 3 ...

This work presents the development of a cavity ring-down spectrometer (CRDS) designed for the detection of several molecules relevant for air pollution, including the second overtone of ro-vibration transitions from CO at 1.58 µm and NO at 1.79 µm.A unique feature of this CRDS is the use of custom mirrors with a reflectivity of about …

The cavity shape of the crushing cavity is mainly determined by the moving and fixed jaw inclination of each crushing layer. Therefore, the moving and fixed jaw inclinations of the four crushing layers in the lower part of the crushing chamber close to the discharge port are taken as design variables. The design variable 𝑋 is expressed as:

The traditional crushing cavity is a "right triangle", the fixed jaw is a straight edge and the moving jaw is a bevel edge; The new crushing cavity is a "symmetrical isosceles triangle". The allowable feed particle size of this cavity crusher is 5% larger than that of the traditional crushing cavity under the condition of the same inlet ...

The self-excited oscillation effect produces a continuous periodic pulsation without an external excitation source. It is widely used in fluid heat and mass transfer, cavitation and resistance reduction, and other related fields. The self-excited oscillation effect is significantly influenced by the vortex structure created by the jet passing …

The predictions of hybrid simulations with vortex and entropy source terms reproduce the perturbation pressure values very close to the existing direct numerical simulation results. Moreover, the results suggest that the use of just the vortex source terms over-predicts the perturbation pressure near the source region.

A trapped vortex combustion system is schematically shown in Fig. 2 (b). The similarities and significant differences between a TVC and the conventional swirler-stabilized combustor can be clearly observed by comparing Fig. 2 (a) and (b). The cavity employed in the TVC configuration [55] is properly sized so that it has a stable …

The vortex dynamic in the flow, mixing, and combustion regions was comparatively investigated. ... Fig. 4 presents the isosurface of the Q-criterion colored by temperature with the contours of pressure to visualize the vortex structures in this …

When the radius is 0.85b, the energy integral length scale in the cavity a tubeless vortex is slightly lower than that in the simple cavity due to the forced vortex crushing by the nozzle. It is worth noting that the energy integral length scale increases gradually with the decrease of radius due to the enhancement of large-scale vortices, but ...

The lower part of the crushing chamber of the single toggle jaw crusher is easy to block when it is used, which directly affects the capacity of the crusher and the service life of the moving jaw ...

The researchers showcase an exciting surface metallic Dirac-vortex cavity design with enhanced power capabilities for electrically pumped Topological Lasers in the THz spectral range.

then the vortex behavior for the cases of parallel wall os-cillations was explored. McDonough (2007) investigated lid-driven cavity problem by use of a new form of large-eddy simulation at moderate Reynolds number to demon-strate the ability of the procedure to automatically predict transition to turbulence. They reported parallel speedups

The combustion dynamics of a mixture of ethylene and air in a cavity flameholder are examined using high-resolution numerical simulations. The simulations are performed using both laminar and turbulent inflow boundary conditions to characterize the effects freestream turbulence on the flame-vortex interactions within the …

The optimally tuned control achieved a sound pressure reduction of 17.5 dB in the duct and 22.6 dB inside the cavity at the vortex shedding frequency, respectively. ... of different composition ...

Learn how to take your compositional skills to the next level! Join Scott Kelby for an all new and updated class on how to absolutely crush the composition. There's a lot more to composition than you may have learned before. Recorded in front of a live audience, Scott covers the basic rules, but then demonstrates […]

Trapped vortex cavity [4] ... A set of parameters such as the fuel composition, inlet pressure, inlet pressure drop, and inlet temperature, and fuel-injection scheme had been studied.

The generation of vortex beams carrying orbital angular momentum (OAM) is the basis of further study and practical applications. ... (LG) beams, the high-order transverse mode, can be obtained by adjusting optical …

Procedure for cavity design. Figure 1a shows our laser cavity, which has a disclination structure that can generate optical vortex and anti-vortex modes. Localized bound states form at the ...

The experimental research on cavity flow field plays an important part in the structural design and optimization study of trapped vortex combustor (TVC). Many of …