In industrial applications requiring real-time feedback, such as quality control and robotic manipulation, the demand for high-speed accurate pose estimation remains critical. Despite advances improving speed accuracy in estimation, finding a balance between computational efficiency poses significant challenges dynamic environments. Most current algorithms lack scalability time, especially diverse datasets, state-of-the-art (SOTA) methods are often too slow. This study focuses on developing...

Gelled fuels have promising applications in the aerospace field. Higher density and calorific value can be achieved with addition of energetic metal particles to gelled fuels, which also effectively improve combustion efficiency fuel thus enhance engine performance. However, make rheological properties more complex, introduces difficulties regarding their atomization combustion. In order investigate effect concentration on characteristics was prepared three particle concentrations 0%, 15%,...

The presence of microbubble significantly influences the rheological properties a jet, thereby considerably increasing complexity jet instability problem. However, jets has been rarely studied, and their breakup mechanism remains obscure. present study was focused on conducting comprehensive analysis bubble flows. A high-precision experimental system constructed to extract time-series signals each cross-sectional profile along axial direction jet. Glycerol solutions with three different...

Spray evaporation is a classical fluid dynamic problem. Although many previous studies have been done, there are still blind spots in the knowledge of turbulent spray mechanism. This work aims to reveal mechanism fuel droplets high-temperature gas jet. First, high-resolution direct numerical simulation method used solve process n-heptane air Second, interactions between different flow topology structures field and curvature heat transfer interface analyzed elucidate influence on It can be...

With the development of large-thrust liquid rocket engines, behavior in supercritical conditions arouses increasing public interest. Due to high pressure and temperature combustion chamber, fuel reaches its critical point much more easily, enters conditions. drastic changes physical properties fluid near point, it is usually difficult simulate motion using traditional computational dynamic methods; but molecular dynamics (MD) can at level. In view engineering application, a binary system...

In the aerospace field, energetic nanoparticles (NPs) are added to fuels increase fuel density and energy. However, non-Newtonian feature of NPs containing suspension restricts their application. High pressure gas-assistance (HPGA) is an effective technique for improving oscillations a liquid jet, especially heavy oil. This study developed set spray systems investigate characteristics NP in HPGA Y-jet injector. To change resonance injectors, three different injectors with unique structural...

Transient energy growth is a common mathematical concept in many fluid flow systems, and it has been widely investigated recent years using non-modal analysis. Non-modal analysis can characterize the short-term amplification of perturbations, which influenced by Reynolds number, Weber initial conditions such as wavenumber. In gas–liquid coaxial nozzles, annular jets are often produced, their breakup process transient growth. However, research this area limited so far. This paper for first...

This article reports the linear stability analysis of a thermodynamic-transcritical jet sprayed to radial electrical field. An asymptotic approach was used obtain solution supercritical subjected In order solutions for electrified jet, surface tension decreased and consequently led increase in Weber number governing equation subcritical charged jet. To investigate role electric stress playing destabilizing process when approaching critical point, energy budget is performed by tracing...

The presence of micro-bubbles has a significant impact on the rheological properties jet, greatly increasing complexity jet instability problem. However, there are few studies micro-bubble jets, and understanding their rupture mechanism is limited. Theoretical models assume periodic small disturbances coupled with gas-liquid interface boundary conditions empirical/semi-empirical fluid constitutive models, resulting in large deviations between theoretical predictions experimental results. To...

In aerospace engine delivery systems, “one-in-two-out” bifurcation structures are commonly used for flow distribution to downstream pipelines. There two common in aircraft engines: the planar orthogonal and spatial bifurcation. By adjusting supply upstream cross-sectional diameter downstream, branches can be adjusted, i.e., “splitting ratio” changes. this paper, a dismantling flexible experimental system is constructed measure pressure signals each channel use non-linear dynamic analysis...

This paper proposes a combination detection and fusion method for targets on sea surface, which is based radar infrared channels, this also suitable surface target of visible light camera at the same time. Radar has advantages full-time, all-weather, large range, but ability to acquire details poor. In comparison with radar, higher angular resolution can target's thermal radiation characteristics, allows wealth detailed information. However, field view small. Based disadvantages these two...

In order to deepen the understanding of proper orthogonal decomposition method(POD) for analysis characteristics gas-liquid coaxial injector spray field, image processing was performed on field images. Taking water as working medium, oscillation self-pulsation were extracted. The surface wave complete conical liquid film extracted with 0.6% xanthan gum solution medium. showed that greater degree flucyuation is, better effect POD is. this case, can extract mode and frequency information....