Slope dependence of self-similar structure and entrainment in gravity currents.

Autor: Salinas, Jorge S., Zúñiga, Santiago, Cantero, M. I., Shringarpure, M., Fedele, J., Hoyal, D., Balachandar, S.
Předmět:
Zdroj: Journal of Fluid Mechanics; 3/10/2022, Vol. 934, pR4-1-R4-14, 14p
Abstrakt: Results from seven direct and large-eddy simulations of gravity currents on slopes ranging from 0.14° to 2.86° that span from the subcritical to the supercritical regime are studied. By considering a long domain, attention is focused on the near-self-similar state approached by these currents far downstream. In the self-similar limit, the various shape factors, local Richardson number, entrainment coefficient, velocity scale and basal drag coefficient reach a constant value, while the current height, volume and momentum fluxes continue to increase linearly. Their dependence on slope is presented. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index