Bubble lift-off diameter is characterized as the size of a bubble rising from wall, which vital in boundary condition heat transfer model and interfacial area transport equation. In this paper, mechanistic force analysis was conducted to explore predictive for vertical channel subcooled boiling flow. Specifically, component growth normal wall shear lift lead on surface. Through analysis, we fou...

Nanobubbles (NBs) opened a new field of ultrasound imaging. There is still no practical method to control the diameter of bubbles. In this study, we developed a new method to control the size by incorporating of silicon hybrid lipids into the bubble membrane. The range of particle size of resulting NBs is between 523.02 ± 46.45 to 857.18 ± 82.90, smaller than the conventional microbubbles. The ...

Bubble formation in the conduits of woody plants sets a challenge for uninterrupted water transportation from the soil up to the canopy. Freezing and thawing of stems has been shown to increase the number of air-filled (embolized) conduits, especially in trees with large conduit diameters. Despite numerous experimental studies, the mechanisms leading to bubble formation during freezing have not...

A combination of planar laser imaging and theoretical modeling has been used to examine matrix-assisted pulsed-laser evaporation direct write MAPLE-DW in the bubble regime. MAPLE-DW is a method for patterning substrates via laser-initiated forward transfer of an organic fluid containing metallic particles and coated on a transparent support. For our conditions, best deposition of a silver-based...

The importance of air bubble dynamics in liquid is some phenomena like chemical and biochemical processes refinery units. 2D Volume Fluid (VOF) method together with the CFD technique were employed for simulating. dynamic meshing used to simulate hydrodynamics rising water column via User Defined Function (UDF) code C++ environment was developed evaluate through column. a stagnant has been consi...

introduction membrane bioreactor (mbr) is an effective technology for wastewater treatment and water reuse which is becoming increasingly popular due to its numerous applications and advantages over conventional activated sludge process. this novel technology have advantages of small footprint, high concentration of mixed liquor suspended solids (mlss), high removal efficiency of chemical oxyge...