Abstract
Differentially heated cavity with Aerosol in turbulent
NAtural convection (DIANA) facility was constructed in
order to experimentally investigate the effects of
turbulent natural convection to aerosol deposition inside
the cavity with two isothermal side walls and adiabatic
top, bottom and lateral walls. DIANA facility contains
two heated / cooled walls made of aluminum. The top,
front and back walls are made of glass in order to allow
optical access to the cavity. In the experimental work,
cavity atmosphere consisted of air and the hot and cold
wall temperatures were set to approximately 57.5 °C and
18 °C, respectively. This sets the Rayleigh number of the
flow to an approximate value 109, which was also used in
the previous simulation work. Measured temperatures
differed from the previous DNS data especially near the
top and bottom walls. Model of a 2-D cavity was created
using Ansys Fluent 14 and the effect of thermal radiation
on cavity temperature was investigated. The Fluent
calculations indicated that even though small, compared
to heat transfer by other mechanisms radiation heat
transfer is significant inside a differentially heated
cavity. Flow field at the x-y plane of DIANA cavity was
investigate using Particle Image Velocimetry (PIV). The
PIV measurements showed that the flow circles the cavity
near the top and the bottom and the isothermal side
walls, whereas the stratified zone at the center of the
cavity is relatively stagnant
| Original language | English |
|---|---|
| Title of host publication | Proceedings of 15th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-15) |
| Publisher | American Nuclear Society (ANS) |
| Edition | USB flash drive |
| Publication status | Published - 2013 |
| MoE publication type | A4 Article in a conference publication |
| Event | 15th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-15 - Pisa, Italy Duration: 12 May 2013 → 15 May 2013 |
Conference
| Conference | 15th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH-15 |
|---|---|
| Abbreviated title | NURETH-15 |
| Country/Territory | Italy |
| City | Pisa |
| Period | 12/05/13 → 15/05/13 |