Numerical Study of the Fluid Characteristics Effect on the Penetration of a Negatively Buoyant Jet
The behavior of a negatively buoyant jet in laminar conditions that result from the injection of lighter fluids downwards into a large container of homogeneous fluid of denser density was studied numerically using OpenFoam with the finite volume method. The fluid characteristics effect on the evolution of the pure water injected in the tank full of salt water has been investigated particularly the molecular diffusivity that affects the mixing layer, the relative difference of density between two liquids, and the kinematic viscosity of the salt water that has an important effect in the transient phase as well as the subsequent steady state in terms of stationary penetration depth and jet profile.
KeywordsNegatively buoyant jet Mixing phenomenon Laminar regime Miscible liquid
- Christodoulou GC, Papakonstantis IG (2010) Simplified estimates of trajectory of inclined negatively buoyant jets. Environmental hydraulics. Taylor & Francis, London, UK, pp 165–170Google Scholar
- Friedman P, Katz J (2000) Rise height for negatively buoyant fountains and depth of penetration for negatively buoyant jets impinging an interface (trans: ASME I). J Fluids Eng 122:779–782Google Scholar
- Toyoshima M, Okawa S (2013) An effect of a horizontal buoyant jet on the temperature distribution inside a hot water storage tank. J Fluid Mech 440:403–413Google Scholar