Velocity Characteristics of Dividing Flow in a T-Junction,
Abstract
This paper presents in experimental investigation of the flows in a T-junction from a model of an internal combustion engine manifold. The flow patterns though the main duct and one branch of the manifold were measured using laser-Doppler anemometry. Detailed measurements of the mean velocity components and corresponding turbulence levels were obtained in order to characterize the flow and provide benchmark data appropriate for the development and assessment of the CFD calculations accompanying the experiments. The flow configuration consisted of a square duct with four branches. For the work presented here three of the branches were blocked, so the geometry corresponded to a T-junction with a main duct/side branch area ratio of 2.87. The results show that with a main duct/branch flow split ratio of 7.8:1 the flow is uniform until 30 mm upstream of the junction and an elongated recirculation region is formed in the side branch. Both the width and length of this region decreased with decreasing flow split ratio. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 23, 1992
- Accession Number
- ADP008930
Entities
People
- A. P. Watkins
- Huaxiang Fu
- M. J. Tindal
- M. Yianneskis
Organizations
- King's College London