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Design and Analysis of A 3-D Conical Diffuser | ||
| Engineering and Technology Journal | ||
| Volume 25, Issue 3, 2007, Pages 443-453 PDF (392 K) | ||
| DOI: 10.30684/etj.25.3.16 | ||
| Author | ||
| Arkan K. Husain Al Taie | ||
| Abstract | ||
| Analysis of flow through the conical diffuser of an annular combustion system is presented. The flow is assumed to be unsteady, quasi three dimensional, compressible and turbulent. A k-ε model was used to simulate turbulence. Several area ratios and divergence angles were tested until circulation took place. At this angle a snout was introduced to correct the flow. A control volume method was used to solve the differential equations of the flow to obtain velocity and pressure coefficient distributions. The numerical results show that the axial velocity decreases with diffuser length for a certain divergence angle. But it increases with angle of divergence for the same area ratio, while the radial component of velocity was found to increase with both. It was proved that the snout can correct the flow whenever circulation takes place. | ||
| Keywords | ||
| combustors; diffusers; snout | ||
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