Abstract
Sensitivity analysis (SA) has become a very popular technique for various application areas.
However, not many studies concern SA using CFD (computational fluid dynamics). The main
problem appears to be the large number of model executions when using the Monte Carlo
method of SA. The computing resources and time needed for such a SA in combination with
CFD (in which one model execution could take several hours) can be enormous.
Nevertheless, this paper describes an approach of using SA in such cases. The
recommendations are obvious: simplifying the model as much as possible; considering just a
key part of the model; and take more care about the speed of convergence. On this basis a
case study on "Optimization of gas infrared heater radiation geometry" has been performed.
The most interesting result is that the shape of the heater and the reflector material do not
significantly influence the heat delivery to the occupied zone. The main conclusion is that
Monte Carlo sensitivity analysis is not suitable for large CFD models with low level of
abstraction. In order to obtain good results, we recommend to select a smaller part of the
overall domain and/or to significantly simplify it.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the SCANVAC Roomvent 2007 Conference, 13-15 June 2007, Helsinki, Finland |
| Editors | O. Seppänen, J. Säteri |
| Place of Publication | Helsinki, Finland |
| Publisher | FINVAC |
| Pages | 9-pages |
| ISBN (Print) | 978-952-99898-0-5 |
| Publication status | Published - 2007 |
| Event | 10th International Conference on Air Distribution in Rooms (ROOMVENT 2007) - Helsinki, Finland Duration: 13 Jun 2007 → 15 Jun 2007 Conference number: 10 |
Conference
| Conference | 10th International Conference on Air Distribution in Rooms (ROOMVENT 2007) |
|---|---|
| Abbreviated title | ROOMVENT 2007 |
| Country | Finland |
| City | Helsinki |
| Period | 13/06/07 → 15/06/07 |