Abstract
The efficiency of sludge cones in raceways was studied using both physical and computational fluid dynamics (CFD) models. A sludge cone installed at a commercial trout farm was used as a model for the experiments. A scale 1:4 model of the commercial cone was constructed. In order to describe fluid motion of the solids accumulated in the cones, rheological properties were measured. The non-Newtonian behavior was measured with a tube viscometer. Although results were sub-optimal, measurements indicated strong non-Newtonian behavior. Modeling with CFD verified the results achieved by the physical scale model. Based on this calibrated CFD model, five different principal designs of cones were evaluated. The results suggest that adjusting cone geometry can significantly enhance the efficiency of sludge collection in raceways. More efficient cone design will not only result in optimized solids removal but will also reduce water loss.
| Originalsprog | Engelsk |
|---|---|
| Titel | Proceedings of the Fifth International Conference on Recirculating Aquaculture |
| Antal sider | 11 |
| Publikationsdato | 2004 |
| Udgave | 5 |
| Sider | 400-410 |
| Status | Udgivet - 2004 |
| Begivenhed | The Fifth International conference on Recirculating Aquaculture - Roanoke, Virginia, USA Varighed: 22 jul. 2004 → 25 jul. 2004 Konferencens nummer: 5 |
Konference
| Konference | The Fifth International conference on Recirculating Aquaculture |
|---|---|
| Nummer | 5 |
| Land/Område | USA |
| By | Roanoke, Virginia |
| Periode | 22/07/2004 → 25/07/2004 |
Emneord
- Aquaculture
- Raceways
- Sludge cones
- Computational fluid dynamics models
- CFD models
- Scale 1:4 models