Spray Dryer Modeling

Mathematical modeling of a spray dryer in matlab and OpenFoam 10 (only flow-dynamic), modified from https://super.chem.polimi.it/ script, detailed informations in pdf folder.

1-D model

Simulation details Matlab-new:

• non-dimensional numbers calculated inside the integral function;
• constrained evaluation of mass and particle diameter;
• weighted evaluation of density;

Simulation details Matlab-corrected:

• non-dimensional numbers calculated inside the integral function;
• constrained evaluation of mass and particle diameter;
• weighted evaluation of density;
• surface confined axial jet correlation from Hydraulic characteristics of turbulent circular jets under surface confinement, see jet folder for numerical representation.

3D-model

Simulation details RAS:

• 2Mln mesh cells;
• k-omega-SST RAS model;
• inlet Q=20Kg/s;
• outlet Pout = 0;

Simulation details RAS + DPFoam:

• 2Mln mesh cells;
• k-omega-SST RAS model;
• inlet Q=20Kg/s;
• outlet Pout = 0;
• 8000 particles;
• Drag Force + gravity + boundaries rebound/escape;

Clone it!

$ git clone https://github.com/sommaa/spray_dryer.git

Results:

• plot Matlab-new:

• plot Matlab-corrected for D-ratio = 1.5

• 3D flow in OpenFoam:

• matrix particle plot

• turbulent jet in OpenLB: