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| Content Provider | Springer Nature Link |
|---|---|
| Author | Shrestha, M. L. Kaga, A. Kondo, A. Inoue, Y. Sugisawa, M. Sapkota, B. |
| Copyright Year | 2004 |
| Abstract | The air pollution concentration in Kathmandu valley in the winter season was found to be higher than in the summer season due to the formation of the inversion layer. This mechanism was simulated in the water-tank experiment by measuring the temperature and flow field using liquid crystal thermometry and particle image velocimetry. Thermal stratification was made at the beginning of the experiment and the surface temperature of the valley model was changed with 12 minutes period matching the diurnal field temperature pattern of the Kathmandu valley. The updraft wind and Bernard convection occurred during daytime and downdraft wind and inversion layer were realized during nighttime. The temperature, flow field and mass dispersion characteristics obtained in the water-tank experiment explained clearly the mechanism of air pollution in Kathmandu valley. |
| Starting Page | 317 |
| Ending Page | 329 |
| Page Count | 13 |
| File Format | |
| ISSN | 13438875 |
| Journal | Journal of Visualization |
| Volume Number | 7 |
| Issue Number | 4 |
| e-ISSN | 18758975 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2004-01-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Kathmandu Valley Water-Tank Experiment Inversion Layer Flow Field PIV Engineering Fluid Dynamics Computer Imaging, Vision, Pattern Recognition and Graphics Classical Continuum Physics Engineering Thermodynamics, Heat and Mass Transfer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electrical and Electronic Engineering |
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