The turbulence characteristics of a single impinging jet through a crossflow

摘要: Abstract The flowfield resulting from the impingement of a single asixymmetric jet against wall after penetrating confined cross-flowing stream were studied using laser-Doppler anemometry. experiments carried out to investigate effect velocity ratio between and crossflow for height 5 diameters. results are presented Reynolds numberss based on exit conditions 60,000 120,000 corresponding jet-to-crossflow ratios 30 73 provide basis better understanding several related but more complex practical flowfields. data also suitable evaluation accuracy turbulence models used in numerical methods currently under development prediction this type flow. As an example latter use, calculations three-dimensional flow characterized by measurements standard k - ϵ model. difficulty assessing model performance these flows due intrusion diffusion errors is demonstrated comparing two different meshes improving discretizations discretization convection terms transport equations momentum high-order QUICK method. ability simulate mean fields examined, particularly immediate vicinity stagnation point.