Prediction of turbulent, axisymmetric, dense jets discharged to quiescent ambients

Large Eddy Simulation of Variable Density Turbulent Axisymmetric Jets

Three cases of variable-density turbulent round jets discharging from a straight circular pipe into a weakly confined low-speed co-flowing air stream are studied with the aid of large eddy simulation. The density ratios considered are 0.14 [He/air], 1.0 [air/air] and 1.5 [CO2/air], with Reynolds numbers of 7000, 21000 and 32000, respectively. Detailed comparisons of the statistics show good agr...

Prediction of Turbulent Temperature Fluctuations in Hot Jets

T diffusivity of temperature μ kinematic viscosity ρ density τij stress tensor subscripts a acoustic j jet ∞ freestream condition superscripts ′ fluctuating quantity time averaged quantity ˆ density weighted, time averaged quantity T turbulent

A finite-difference analysis of turbulent, axisymmetric, buoyant jets and plumes

Axisymmetric superdirectivity in subsonic jets

André V. G. Cavalieri, Peter Jordan, Tim Colonius and Yves Gervais Journal of Fluid Mechanics / Volume 704 / August 2012, pp 388 ­ 420 DOI: 10.1017/jfm.2012.247, Published online: 03 July 2012 Link to this article: http://journals.cambridge.org/abstract_S0022112012002479 How to cite this article: André V. G. Cavalieri, Peter Jordan, Tim Colonius and Yves Gervais (2012). Axisymmetric superdirect...

Structural Stability of Turbulent Jets

Turbulence in fluids is commonly observed to coexist with relatively large spatial and temporal scale coherent jets. These jets may be steady, vacillate with a definite period, or be irregular. A comprehensive theory for this phenomenon is presented based on the mutual interaction between the coherent jet and the turbulent eddies. When a sufficient number of statistically independent realizatio...