In this paper, we will propose a boundary element method for solving classical boundary integral equations on complicated surfaces which, possibly, contain a large number of geometric details or even uncertainties in the given data. The (small) size of such details is characterised by a small parameter and the regularity of the solution is expected to be low in such zones on the surface (which ...

The main objective of this study is to develop a comprehensive model for spray atomization under the consideration flash boiling, which includes nucleation, bubble growth, and droplet breakup. Although boiling has been previously studied, there still no well-established analytical numerical their mechanisms, or general guidelines on implementation strategy. In study, detailed formulations are e...

Serial crystallography experiments at X-ray free-electron laser facilities produce massive amounts of data but only a fraction these are useful for downstream analysis. Thus, it is essential to differentiate between acceptable and unacceptable data, generally known as `hit' `miss', respectively. Image classification methods from artificial intelligence, or more specifically convolutional neural...

In Euler-Lagrange models for particulate systems, the information exchange of multiphase coupling terms, i.e. drag force, heat transfer, or mass is often smoothed from particles' location to nearby computational cells when cell and particle sizes are comparable. The diffusion-based smoothing among most popular approach. However, it comes polydisperse state-of-the-art constant diffusivity approa...

Fuel spray characteristics influence combustion, which in turn has a direct impact on engine performance and emissions. Recently, there been an increasing interest novel castor oil biodiesel. However, few investigations have performed that combine both numerical experimental biodiesel analyses. Hence, this paper, we aim to explore the behavior of jatropha by employing methods under non-evaporat...

Thermoacoustic instabilities often occur in a combustion chamber of jet engine when pressure fluctuations from the released heat create closed feedback loop with inlet air velocity, causing further that enhance cycle back again. Since most chambers use liquid fuel dispersed into droplets by an airblast atomizer, any occurring entering nozzle could affect atomization process and air-to-fuel rati...

A critical review on the improvement of penetration theory is presented in this work. The volumetric liquid-phase mass transfer coefficients kLa seven different liquids (1-butanol, 2-propanol, anilin, decalin, nitrobenzene, tetralin, and ethylene glycol) aerated with air a small bubble column (BC) (inner diameter: 0.095 m) were measured at ambient conditions further analyzed. It was found that ...

Regarding reducing particle emissions from dual-injection spark ignition engines, most of the existing research focused on benefits using alcohol fuels. However, a comprehensive study effects fuel injection pressure microscopic spray characteristics and in engines fuelled with gasoline has not been reported before. In this paper, assistance phase Doppler particles analyser system fast analyser,...