Study on bubble-induced turbulence in pipes and containers with Reynolds-stress models

Abstract Bubbly flow still represents a challenge for large-scale numerical simulation. Among many others, the understanding and modelling of bubble-induced turbulence (BIT) are far from being satisfactory even though continuous efforts have been made. In particular, buoyancy bubbles generally introduces anisotropy in flow, which cannot be captured by standard eddy viscosity models with specific source terms representing BIT. Recently, on basis bubble-resolving direct simulation data, new Reynolds-stress model considering BIT was developed Ma et al. ( J Fluid Mech , 883: A9 (2020)) within Euler—Euler framework. The objective present work is to assess this compare its performance other using systematic test strategy. We select experimental data BIT-dominated range find that leads major improvements prediction full components.