Impact of viscoelastic spheres on to hydrophobic and hydrophilic substrates with liquid pools

2019 ◽  
Vol 146 (4) ◽  
pp. 3075-3076
Author(s):  
Rafsan Rabbi ◽  
Tadd Truscott ◽  
John S. Allen
Keyword(s):  
Liquid Pools

An Experimental Study of the Interaction of Multiple Liquid Pool Fires

1995 ◽  
Vol 117 (1) ◽  
pp. 37-42 ◽  
Author(s):  
J. R. Vincent ◽  
S. R. Gollahalli
Keyword(s):  
Carbon Dioxide ◽  
Large Fraction ◽  
Liquid Pool ◽  
Flame Height ◽  
Design Parameters ◽  
Pool Fires ◽  
Pool Surface ◽  
Flammable Liquids ◽  
Liquid Pools ◽  
Ignition And Combustion

The risk of accidental spills and possible fires is high in the storage and handling of large quantities of flammable liquids. Such liquid pool fires are generally buoyancy-driven and emit a large fraction of their heat release in the form of radiation. Ignition and combustion characteristics of liquid pools depend on the design parameters such as diameter, spacing, and shape of the pools. This laboratory scale study was conducted to determine the effects of these parameters on the characteristics of multiple liquid pool fires. The measurements reported include pool surface regression rate, flame height, temperature, and concentrations of carbon dioxide, soot, and oxygen.

scholarly journals Coalescence and spreading of drops on liquid pools

2021 ◽  
Vol 586 ◽  
pp. 257-268
Author(s):  
Varun Kulkarni ◽  
Venkata Yashasvi Lolla ◽  
Suhas Rao Tamvada ◽  
Nikhil Shirdade ◽  
Sushant Anand
Keyword(s):  
Liquid Pools

Formation and Evolution of Liquid Pools Entrapped within Primary Particles of In Situ Mg2Si/AM60B Composite with Fine-Grains during Partial Remelting

2013 ◽  
Vol 446-447 ◽  
pp. 55-61
Author(s):  
Su Qing Zhang ◽  
Ti Jun Chen ◽  
Ying Ma ◽  
Yuan Dong Li ◽  
Yuan Hao
Keyword(s):  
Phase Transformations ◽  
Formation Mechanism ◽  
Partial Remelting ◽  
Initial Stage ◽  
Primary Particles ◽  
Formation And Evolution ◽  
Liquid Pools ◽  
Two Stages

The formation mechanism and evolution of liquid pools entrapped within solid grains have been investigated during partial remelting of in-situ Mg2Si/AM60B composite with fine-grains during partial remelting. The results indicate that the merging of dendrite arms during the initial stage of partial remelting is the main cause for the formation of the entrapped liquid pools. In view of phase transformations, the formation of the entrapped liquid pools is attributed to the reactions of α+β→L and α→L, essentially. The evolution of the liquid pools during latter heating can be divided into two stages: the agglomeration of each others and connection with intergranular liquid.

Convective disturbances in static liquid pools

1973 ◽  
Vol 6 (2) ◽  
pp. 165-179 ◽  
Author(s):  
W.J. Thomas ◽  
R. Khanna ◽  
E.W. Palmer
Keyword(s):  
Liquid Pools

Ejecta evolution during cone impact

2014 ◽  
Vol 752 ◽  
pp. 410-438 ◽  
Author(s):  
J. O. Marston ◽  
S. T. Thoroddsen
Keyword(s):  
Surface Tension ◽  
High Surface ◽  
Air Entrainment ◽  
High Impact ◽  
Self Similarity ◽  
Spatiotemporal Evolution ◽  
Solid Cone ◽  
High Surface Tension ◽  
Liquid Pools ◽  
The Impact

AbstractWe present findings from an experimental investigation into the impact of solid cone-shaped bodies onto liquid pools. Using a variety of cone angles and liquid physical properties, we show that the ejecta formed during the impact exhibits self-similarity for all impact speeds for very low surface tension liquids, whilst for high-surface tension liquids similarity is only achieved at high impact speeds. We find that the ejecta tip can detach from the cone and that this phenomenon can be attributed to the air entrainment phenomenon. We analyse of a range of cone angles, including some ogive cones, and impact speeds in terms of the spatiotemporal evolution of the ejecta tip. Using superhydrophobic cones, we also examine the entry of cones which entrain an air layer.

Apex jets from impacting drops

2008 ◽  
Vol 614 ◽  
pp. 293-302 ◽  
Author(s):  
J. O. MARSTON ◽  
S. T. THORODDSEN
Keyword(s):  
Surface Tension ◽  
Reynolds Number ◽  
Weber Number ◽  
Limited Range ◽  
Upper Bounds ◽  
Drop Surface ◽  
Viscous Drops ◽  
Lower Viscosity ◽  
Viscous Drop ◽  
Liquid Pools

We present experiments showing vertical jetting from the apex of a viscous drop which impacts onto a pool of lower viscosity liquid. This jet is produced by the ejecta sheet which emerges from the free surface of the pool, and moves up and wraps around the surface of the drop. When this sheet of liquid converges and collides at the top apex of the drop it produces a thin upward jet at velocities of more than 10 times the drop impact velocity. This jetting occurs for a limited range of impact conditions, where the ejecta speed is sufficient for the sheet to travel around the entire drop periphery, but not so fast that it separates from the drop surface. The lower bound for the jetting region is thereby set by a minimal Reynolds number, but the upper bounds are subject to a maximum-Weber-number criterion. The strongest observed jets appear for viscous drops impacting onto liquid pools with the lowest viscosity as well as lowest surface tension, such as acetone and methanol. Jetting has also been observed for drops which are immiscible with the pool liquid, under a different range of impact conditions. However, jetting is never observed for pools of water, as the surface tension is then significantly larger than that of the drop. We believe that Marangoni stresses act in this case to promote separation of the sheet to prevent the jetting. A movie is available with the online version of the paper.

Bending of wind-blown flames from liquid pools

1966 ◽  
Vol 2 (2) ◽  
pp. 127-135 ◽  
Author(s):  
J. R. Welker ◽  
C. M. Sliepcevich
Keyword(s):  
Liquid Pools
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