1 / 24

CFD analysis of flow inside the Poppet valve duct system

CFD analysis of flow inside the Poppet valve duct system . Objective. CFD simulation of air-fuel mixture flow inside the RTO poppet valve duct system, for the visualization of flow pattern and analysis of flow properties distribution. Summary/ Conclusion.

brody
Download Presentation

CFD analysis of flow inside the Poppet valve duct system

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CFD analysis of flow inside the Poppet valve duct system Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  2. Objective CFD simulation of air-fuel mixture flow inside the RTO poppet valve duct system, for the visualization of flow pattern and analysis of flow properties distribution. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  3. Summary/ Conclusion In this report, the results for the CFD analysis of air-fuel mixture flow inside the RTO poppet valve duct system, for Time-2 configuration is presented. For the above purpose, incompressible flow model with species transport in ANSYS FLUENT is used. The flow profile obtained at duct outlet from the previous simulation in the system-fan duct is implemented as inlet boundary condition for the current simulation. The outlet boundary is extended in order to ensure that the numerical solution is not affected by the duct exit boundary condition. Comparatively higher fuel mass fraction is observed in the flow coming out of far end duct outlets. This is due to the fact that the velocity and fuel mass fraction distribution at inlet is not uniform. Horizontal stratification of fuel mass fraction is observed in the main duct, which implies that the convection effect is significantly more dominant than diffusion mixing. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  4. CAD Model Flow exit to chamber Air-fuel mixture Inlet Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  5. Meshing Information Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  6. Mathematical Model Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com • For incompressible flow simulation of air with fuel injection and turbulence modeling, following equations are used: • Conservation of mass: • Conservation of momentum: • Conservation of energy: • Realizable k-epsilon turbulence model with standard wall function is used for turbulence modeling.

  7. Input Parameters Fluid properties: Mixture Inlet: Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  8. Boundary Conditions Mixture Inlet: Flow properties are extracted on inlet patch, from previous simulation. Velocity profile at inlet Outlet: Calculated from the extended domain. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  9. Results: Velocity Distribution Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  10. Results: Velocity Distribution Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  11. Results: Velocity Distribution Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  12. Results: Velocity Distribution • Velocity profile at duct outlets is not uniform. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  13. Results: Velocity Vector • Large recirculation zone is created in the main entrance duct. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  14. Results: Velocity Vector • In all duct outlets, large recirculation zone is observed. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  15. Results: Velocity Vector • In all duct outlets, large recirculation zone is observed. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  16. Results: Velocity Vector • In all duct outlets, large recirculation zone is observed. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  17. Results: Velocity Vector • In all duct outlets, large recirculation zone is observed. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  18. Results: RelativePressure Distribution Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  19. Results: RelativePressure Distribution Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  20. Results: Fuel Mass Fraction Fuel Mass Fraction Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  21. Results: Fuel Mass Fraction Fuel Mass Fraction Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  22. Results: Fuel Mass Fraction • Due to non uniform fuel mass fraction observed at inlet, a low fuel content area is created here. Fuel Mass Fraction • From top view, species content stratification is observed. Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  23. Results: Fuel Mass Fraction • Higher fuel mass fraction is observed in the far end duct outlet. Fuel Mass Fraction Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

  24. Results Exit-4 Inlet Exit-3 Exit-2 Exit-1 Hi-Tech Outsourcing Services Hi-Tech House, Gurukul, Ahmedabad-380 052, Gujarat, India. Contact:+91-794-000-3237 Website:www.hitechos.com | www.hitechcaddservices.com

More Related