Amin Lotfiani - Assistant Professor, Mechanical Engineering Department, Elm-o-Fann University College of Science and Technology, Urmia, Iran

In this work, jet trajectory in the flow field of tangentially-fired furnaces (TFF) with square horizontal cross-sections is studied using three-dimensional computational fluid dynamics (CFD) simulations. A least-squares correlation for the trajectory of the coaxial fuel-air jets is suggested which can be very useful in future analysis of TFF. In order to verify the CFD solution procedure, a turbulent round jet injected into cross-flow is simulated. The calculated jet trajectory and velocity profile are compared with the experimental and numerical data of existing references and good agreement is observed. Results show that the trajectory of the coaxial fuel-air jets is neither affected by the inner (fuel) jet Reynolds number nor by the outer-to-inner jet momentum ratio.

Jet trajectory, tangentially-fired furnace, diffusion combustion, CFD