What are the causes of branched finger?
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Branched fingers can be caused by various factors. In the case of viscous and gravitational flow instabilities, the displacement front breaks up into finger-like fluids . Another cause is when water is forced under pressure to displace a high viscosity shear-thinning fluid, resulting in highly ramified fingering structures . Finger formation can also occur in water repellent soils due to hysteresis in the water retention function, leading to the formation of high-velocity flow paths . Additionally, when a viscous liquid bridge between two parallel substrates is stretched, its interface can become unstable, leading to the emergence of a network of fingers . Fingering patterns can also emerge when circular interfaces of strain-rate-softening fluids displace less viscous fluids in extensionally dominated flows .
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| The causes of branched fingers in the experiment are the displacement of less viscous fluid by strain-rate-softening fluids in extensionally dominated flows. | |
| The causes of branched finger formation in a viscous liquid bridge stretched by an accelerating substrate are studied experimentally and analyzed theoretically. | |
| The causes of branched finger formation are hysteresis in the water retention function and the shape of the main wetting and drainage branches. | |
| The causes of branched fingers are viscous and gravitational flow instabilities. | |
14 Citations | The causes of branched fingers in viscous fingering are the splitting of leading finger tips and diffusion limited growth. |
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