Abstract
This investigation uses three subgrid-scale models of large eddy simulation (LES) to study airflows in and around buildings. They are the Smagorinsky model, a filtered dynamic subgrid-scale model, and a stimulated small-scale subgrid-scale model. For outdoor airflow that is highly turbulent, the simple Smagorinsky model is sufficient. For indoor airflow where laminar flow can be as important as turbulent flow, the filtered dynamic subgrid-scale model and the stimulated small-scale subgrid-scale model are recommended. However, the computing time required by the filtered dynamic subgrid-scale model and the stimulated small-scale subgrid-scale model are considerably higher than that by the Smagorinsky model. This paper also discusses how to set up boundary conditions for wind and how to simulate indoor and outdoor airflow together with good resolution and reasonable size of the computational domain for natural ventilation studies.
| Original language | English |
|---|---|
| Pages (from-to) | 517-526 |
| Number of pages | 10 |
| Journal | ASHRAE Transactions |
| Volume | 109 PART 2 |
| Publication status | Published - 2003 |
| Event | 2003 Annual Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers - Kansas, United States Duration: 28 Jun 2003 → 2 Jul 2003 |
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering