Numerical study of turbulent annular impinging jet flow and heat transfer from a flat surface

• Turbulent annular impinging jet heat transfer is numerically investigated. • Realizable k-ε turbulence model is chosen after validation against experimental data. • Three different flow-patterns as function of different parameters are identified. • Flow-field for small jet-to-target separation dis...
Ausführliche Beschreibung

• Turbulent annular impinging jet heat transfer is numerically investigated. • Realizable k-ε turbulence model is chosen after validation against experimental data. • Three different flow-patterns as function of different parameters are identified. • Flow-field for small jet-to-target separation distance have distinguished reverse stagnation flow. • Compared to the round jet impingement, 10–15% heat transfer enhancement is achieved. Ausführliche Beschreibung