Predicting the agglomeration and breakage of solid particles is important when designing a compact efficient water purification process. A coupled computational fluid dynamics model presented where population balance equation applied to track particle size distribution for periodic turbulent pipe flow with 180° bends Reynolds numbers 15,000<Ref<35,000 bend radii rB=dh,rB=1.5dh rB=2.5dh. The cri...

In this work, the GEneralised Multifluid Modelling Approach (GEMMA) is applied to simulation of liquid–liquid extraction in a Rotating Disc Column (RDC) and Pulsed Sieve-plate Extraction (PSEC). A mass transfer modelling methodology developed, which multiphase flows, droplet size distribution dispersed phase holdup predicted with computational fluid dynamics are coupled correlations predict ove...

Transient drop-size distributions of stirred dispersions undergoing breakage were experimentally measured at long stining times. The results show that drops continue to break the entire duration of the experiment (at least up to 10 h) and force a reevaluation of the widely held concept of a maximum stable drop diameter, d,,,. Transient distributions show the existence of self-similarity, which ...

The rehabilitation of sandy desertified land in various dryland ecosystems by different management practices has a great potential to increase aggregate stability and improve soil quality. However, plants in general may have a different ability to sustain soil. The objective was to determine the effects of reclamation practices including Haloxylon ammodendron and Atriplex canescens plantation o...

The circular-hole rotating core fog nozzle has excellent atomization performance and been widely used in the realm of spray dust. As part this study, a mathematical model was developed for predicting Sauter mean diameter (SMD) nozzles type. coaction between SMD three influencing factors axial distance, water supply pressure, outlet investigated based on customized spray’s experimental platform ...

The spray characteristics play a crucial role in determining the performance and emissions of compression ignition (CI) engines at pre-combustion stage. With advent many types alternative fuels their blends with diesel, it is necessary to investigate effect fuel properties various injection conditions determine penetration length, cone angle area for viable similar or better dispersion diesel. ...

Ballistic simulation of the spray sprinkler for self-propelled irrigation machines requires the incorporation of the effect of the jet impact with the deflecting plate. The kinetic energy losses produced by the jet impact with the spray plate were experimentally characterized for different nozzle sizes and two working pressures for fixed spray plate sprinklers (FSPS). A technique of low speed p...

In the present study, the flow boiling heat transfer of R1234ze(E), R32 and zeotropic mixture R1234ze(E)/R32 (50/50 mass%) in a horizontal micro-fin tube is experimentally investigated to clarify the pressure drop and heat transfer characteristics. Tested micro-fin tube is made of copper, and its geometry is as follows, 6.00 mm in outer diameter, 5.21 mm in mean inside diameter, 0.26 mm in fin ...

This study aims to derive basic principles for liquid mass flow scaling of gas-assisted coaxial nozzles. Four steps were investigated in the range M˙liq = 20–500 kg·h−1, applying four atomizers with similar geometry designed at Weaero= const. High-speed camera and phase Doppler anemometer utilized detect local droplet size distribution. To estimate a reliable measurement plane, detection method...