Abstract
Highlights
•The lock-up phenomenon in thermally-stratified environment is explained using jet mechanics.
•Non-dimensional governing equations of buoyant jet are derived.
•The lock-up height of exhaled flow can be predicted by using a simple buoyant jet model.
•A smaller Ar number or a steeper temperature gradient leads to a lower lock-up height.
•Variation of lock-up height in different temperature gradients follows a power law relation.
•The lock-up phenomenon in thermally-stratified environment is explained using jet mechanics.
•Non-dimensional governing equations of buoyant jet are derived.
•The lock-up height of exhaled flow can be predicted by using a simple buoyant jet model.
•A smaller Ar number or a steeper temperature gradient leads to a lower lock-up height.
•Variation of lock-up height in different temperature gradients follows a power law relation.
| Original language | English |
|---|---|
| Journal | Building and Environment |
| Volume | 116 |
| Pages (from-to) | 246-256 |
| ISSN | 0360-1323 |
| DOIs | |
| Publication status | Published - 2017 |
Keywords
- Exhaled flow
- Buoyant jet
- Temperature gradient
- Jet mechanics
- Dispersion