Unifying Theory of Scaling in Drop Impact: Forces and Maximum Spreading Diameter DOI Creative Commons
Vatsal Sanjay, Detlef Lohse

Physical Review Letters, Journal Year: 2025, Volume and Issue: 134(10)

Published: March 11, 2025

The dynamics of drop impact on a rigid surface strongly depends the droplet’s velocity, its size, and material properties. main characteristics are force exerted maximal spreading radius. crucial question is how do they depend (dimensionless) control parameters, which Weber number We (nondimensionalized kinetic energy) Ohnesorge Oh (dimensionless viscosity). Here, we perform direct numerical simulations over huge parameter range 1≤We≤103 10−3≤Oh≤102 in particular develop unifying theoretical approach, inspired by Grossmann-Lohse theory for wall-bounded turbulence [Grossmann Lohse, ; ]. key idea to split energy dissipation rate into different phases process, physical mechanisms dominate. can consistently quantitatively account We Oh dependences diameter space. It also clarifies why viscous plays significant role during impact, even low-viscosity droplets (low Oh), contrast what had been assumed some prior theories. Published American Physical Society 2025

Language: Английский

Fluid Dynamic Characterization of Binary Droplet Collisions via the Pseudopotential Lattice-Boltzmann Method DOI
Juan Restrepo-Cano, Francisco E. Hernández Pérez, Hong G. Im

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121502 - 121502

Published: March 1, 2025

Language: Английский

Citations

0
Unifying Theory of Scaling in Drop Impact: Forces and Maximum Spreading Diameter DOI Creative Commons
Vatsal Sanjay, Detlef Lohse

Physical Review Letters, Journal Year: 2025, Volume and Issue: 134(10)

Published: March 11, 2025

The dynamics of drop impact on a rigid surface strongly depends the droplet’s velocity, its size, and material properties. main characteristics are force exerted maximal spreading radius. crucial question is how do they depend (dimensionless) control parameters, which Weber number We (nondimensionalized kinetic energy) Ohnesorge Oh (dimensionless viscosity). Here, we perform direct numerical simulations over huge parameter range 1≤We≤103 10−3≤Oh≤102 in particular develop unifying theoretical approach, inspired by Grossmann-Lohse theory for wall-bounded turbulence [Grossmann Lohse, ; ]. key idea to split energy dissipation rate into different phases process, physical mechanisms dominate. can consistently quantitatively account We Oh dependences diameter space. It also clarifies why viscous plays significant role during impact, even low-viscosity droplets (low Oh), contrast what had been assumed some prior theories. Published American Physical Society 2025

Language: Английский

Citations

0