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Numerical simulation of laminar and turbulent two-phase flow in pressure-swirl atomizers

Nouri Borujerdi, A ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.2514/1.J051331
  3. Publisher: AIAA , 2012
  4. Abstract:
  5. This paper has developed an axisymmetric laminar and turbulent two-phase flow solver to simulate pressure-swirl atomizers. Equations include the explicit algebraic Reynolds stress model, the Reynolds-averaged Navier-Stokes, and the level set equation. Applying a high-order compact upwind finite difference scheme with the level set equation being culminated to capture the interface between air-liquid two-phase flow and decreasing the mass conservation error in the level set equation. The results show that some recirculation zones are observed close to the wall in the swirl chamber and to the axis. This model can predict converting the Rankin vortex in the swirl chamber to the forced vortex in the orifice section. The proposal model shows that some improvements are obtained compared with the previous numerical solutions, especially in the laminar flow, so that the discharge coefficient, film thickness, and spray cone angle are satisfactory with the previous experimental data
  6. Keywords:
  7. Axisymmetric ; Discharge coefficients ; Explicit algebraic reynolds stress models ; Finite difference scheme ; High-order ; Level-set equation ; Mass conservation error ; Numerical solution ; Recirculation zones ; Reynolds-Averaged Navier-Stokes ; Spray cone angle ; Swirl chambers ; Turbulent two-phase flows ; Atomization ; Atomizers ; Laminar flow ; Phase interfaces ; Turbulent flow ; Vortex flow
  8. Source: AIAA Journal ; Volume 50, Issue 10 , 2012 , Pages 2091-2101 ; 00011452 (ISSN)
  9. URL: http://arc.aiaa.org/doi/abs/10.2514/1.J051331

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