ISSN Online: 2379-1748
ISBN Flash Drive: 978-1-56700-472-4
ISBN Online: 978-1-56700-471-7
3rd Thermal and Fluids Engineering Conference (TFEC)
CFD STUDY OF SUBMERGED TURBULENT OFFSET JETS
Resumo
Offset jets are formed when a jet emanates from a nozzle of finite aspect ratio at an elevation from the channel
bed. Submerged offset jets are often encountered as energy dissipation devices in hydraulic structures, mixing of
effluents in rivers and streams etc. CFD study of a submerged offset jet (offset ratio 4) emanating from a nozzle
into an open channel was carried out using the Improved Delayed Detached Eddy Simulation (IDDES). The free
surface was captured using the volume of fluid (VOF) with High Resolution Interface Capturing (HRIC) scheme.
The complex three-dimensional flow features of the offset jet captured by the simulation is qualitatively analysed
by examining the vorticity field. The complexity of the offset jet flow field also serves to evaluate turbulence
models used in CFD. The present study also serves as a benchmark for assessing the performance of the IDDES
turbulence model.