Challenge on Gearbox Sloshing effect

AIM: Simulations of Two different fluid sloshing effect on Two different set of Gear box model.

3D Model

Due to computational limitations, the analysis is done on 2D model by spiliting the model into halves in vertical axis.

2D model

Meshing

To give the motion to the gears an User Defined Function (UDF) has been employed:

Setup and Results:

Water = Density 998.2 kg/m3, Viscosity 0.001003 kg-m/s

Oil = Density 871 kg/m3, Viscosity 0.04006889 kg-m/s

#1 Case: Lower Clearance model with Air-water mixture

Animation:

#2 Case: Lower Clearance Air-Fuel Mixture

Animation:

#3 Case: Greater Clearance Air-Water Mixture

Animation:

#4 Case: Greater Clearance Air-Fuel Mixture

Animation:

Results & Conclusions

• For multiflow analyis, auto mesh refinement is most sophisticated and challenging part, because the mixture of different fluids cause flow domain varying with time.

• The Theory behind this would be \" A dispersed phase is a phase in a two phase system that consists of finely divided particles (as colloidal particles), droplets, or bubbles of one substance distributed through another substance- the continuous phase.