We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
One-order closed model of fluctuating particle coagulation term in the Reynolds averaged general dynamic equation for nanoparticles.
- Authors
Lin, Wenqian; Yang, Hailin; Lin, Jianzhong
- Abstract
The effect of fluctuating coagulation on particle distribution in multiphase turbulence of nanoparticles was studied based on the Reynolds averaged equation of turbulence flow and the general dynamic equation of particles. A one-order closed model was proposed to relate the fluctuating coagulation term to the average particle size distribution function for closing the particle equation. The proposed model and equations were applied to a turbulent jet flow using the k-ε turbulent model and the Taylor-series expansion moment method. The results showed that there is a difference in the values of particle number density M0, geometric average diameter dpg and geometric standard deviation σg of particle diameter with and without considering fluctuating coagulation. Larger Damkohler number leads to smaller M0, higher particle polydispersity M2, larger dpg and σg. Along the x direction of the flow, M0 decreases, while M2, dpg and σg increase. From the centerline to the outer edge of the jet, M0, M2 and dpg decrease, while σg increases first and then decreases. Finally, the further research that can be carried out has been proposed.
- Subjects
TURBULENT jets (Fluid dynamics); JETS (Fluid dynamics); COAGULATION; REYNOLDS equations; NANOPARTICLES; DIAMETER; TAYLOR'S series
- Publication
Journal of Nanoparticle Research, 2024, Vol 26, Issue 5, p1
- ISSN
1388-0764
- Publication type
Article
- DOI
10.1007/s11051-024-06020-4