In this study, we investigated the flow characteristics of two circular water jets impinging on a moving surface covered with a water film as fundamental research on strip cooling. Experiments and numerical simulations were conducted under non-heated surface conditions. The experiments were recorded on video. The jet velocity, nozzle-to-plate distance, nozzle-to-nozzle spacing, and flow rates of the water film were varied systematically. Depending on the flow conditions, three types of flows were found to exist between the two modes: stable, unstable, and transient. We propose a simple theoretical model for predicting the critical boundary at which the flow is in the "stable mode." In the numerical simulation, the Navier-Stokes equation system for a three-dimensional incompressible unstable viscous fluid was solved using a finite difference method. The effects of viscosity, gravity, and presence of a free liquid surface with surface tension were considered. The flow characteristics of the "unstable mode" are discussed in detail to offer a better understanding of its physics.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.