Spray droplet size distribution measurement
Skripnikov, Dmitry (2016)
Diplomityö
2016
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2016102625602
https://urn.fi/URN:NBN:fi-fe2016102625602
Tiivistelmä
Spray nozzles are used in Nuclear Power Plants in order to condense and decrease the pressure of vapor in containment volume during Loss of Coolant Accidents and in pressurizer during its normal operation. Spray droplet size distribution and mean droplet diameters are needed for calculation of heat and mass transfer between the vapor and spray droplets. Computational Fluid Dynamic (CFD) codes can be used to simulate the spray flow and to test the performance of different spray nozzles.
The present Thesis deals with the spray droplet size distribution measurements of three pressure-swirl nozzles of different nominal capacities in the air atmosphere at room temperature by means of Shadowgraphy technique. The goal of this measurements is to get experimental data on droplet sizes in order to use it to validate spray droplet size distribution models built in CFD codes.
The present Thesis deals with the spray droplet size distribution measurements of three pressure-swirl nozzles of different nominal capacities in the air atmosphere at room temperature by means of Shadowgraphy technique. The goal of this measurements is to get experimental data on droplet sizes in order to use it to validate spray droplet size distribution models built in CFD codes.