58
K. Fraˇ na et al.
Fig. 6. Summary of pressure differences as a function of flow velocity.
4 Conclusion
The numerical simulation of the particle separation in the cyclone was studied numerically. This study confirmed that this particle behavior in the cyclone varied based in
the pressure outlet prescription. Furthermore, the flow behavior in the real cyclone was
examined experimentally and the pressure distribution was found. However, these results
were relatively higher because of the fact, that the cyclone was printed using 3D technology and the surface roughness was too coarse leading to the higher friction coefficient
and higher total pressure drop. In the future it is planned that with the 3D printed prototype tests will be carried out under real conditions. In further steps, a further prototype
made of stainless steel will follow to significantly improve the surface quality of the
cyclone inside wall. This will have a positive effect on the wall friction, which will be
reduced. The new stainless steel prototypes will be used for further suction tests with
seeds, sand and soil under laboratory conditions. In this context, further considerations
and tests are necessary to control and regulate the air flow in order to achieve a better
separation and separation behavior in case of further foreign particle contamination.
These new results will be used for extended validation of the numerical results.
Acknowledgment. The work has been financially supported by Federal Ministry for Economic
Affairs and Energy based on a decision of the German Bundestag, FKZ: 16KN072922 and the
project “Hybrid materials for hierarchical structures”, reg. no. CZ.02.1./0.0/0.0/16_019/0000843
provided by the European Union and the Czech government.
References
1. Kai, H., Ari, J., Sirpa, K., Hannu, K., Markku, K., Antti, K., Mikko, M., Veikko T.: Multiphase flow dynamics theory and numerics. VTT Technical Research Centre of Finland,
Vuorimiehentie 3, Finland (2009)
K. Fraˇ na et al.
Fig. 6. Summary of pressure differences as a function of flow velocity.
4 Conclusion
The numerical simulation of the particle separation in the cyclone was studied numerically. This study confirmed that this particle behavior in the cyclone varied based in
the pressure outlet prescription. Furthermore, the flow behavior in the real cyclone was
examined experimentally and the pressure distribution was found. However, these results
were relatively higher because of the fact, that the cyclone was printed using 3D technology and the surface roughness was too coarse leading to the higher friction coefficient
and higher total pressure drop. In the future it is planned that with the 3D printed prototype tests will be carried out under real conditions. In further steps, a further prototype
made of stainless steel will follow to significantly improve the surface quality of the
cyclone inside wall. This will have a positive effect on the wall friction, which will be
reduced. The new stainless steel prototypes will be used for further suction tests with
seeds, sand and soil under laboratory conditions. In this context, further considerations
and tests are necessary to control and regulate the air flow in order to achieve a better
separation and separation behavior in case of further foreign particle contamination.
These new results will be used for extended validation of the numerical results.
Acknowledgment. The work has been financially supported by Federal Ministry for Economic
Affairs and Energy based on a decision of the German Bundestag, FKZ: 16KN072922 and the
project “Hybrid materials for hierarchical structures”, reg. no. CZ.02.1./0.0/0.0/16_019/0000843
provided by the European Union and the Czech government.
References
1. Kai, H., Ari, J., Sirpa, K., Hannu, K., Markku, K., Antti, K., Mikko, M., Veikko T.: Multiphase flow dynamics theory and numerics. VTT Technical Research Centre of Finland,
Vuorimiehentie 3, Finland (2009)