Investigation on Airflow Characteristics and Thermal Comfort in an Indoor Swimming Pool
Notice bibliographique
Résumé
The design of air conditioning system in an indoor swimming pool hall plays a critical role in providing the thermal comfort and hygiene environment. This research objected to studying the effect of the air curtain flows on heat and mass transfer by investigating the velocity, temperature and moisture distribution inside the hall of the swimming pool which is occupied by many spectators and swimmers. The study carried out using computational fluid dynamics (CFD) simulation using a commercial CFD package, namely ANSYS Fluent 17.2. The CFD modeling techniques solved the continuity, momentum, energy, and species transport equations in addition to k-epsilon model equations for turbulence closure. Mesh element sizes used in the present work exceeded 5.6 million mesh element which allowed better and meaningful predictions of the flow regimes. The study performed inside a semi-Olympic pool located at Bishop’s University in Sherbrooke (Quebec, Canada) by drawing the geometry of roughly trapezoidal shape and dimensions of (34.5 m×25 m×8 m) by SpaceClaim 3D modeling software for six different simulation cases. The investigation included the influence of the location and number of ventilation and air conditioning supply and extracts openings at the lowest ACH (Air Changes Per Hour) recommended by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) and evaluated by Fanger’s model. Improving thermal comfort of the occupied area around swimming pool and spectator stand area is the primary concern of this study, therefore, to achieve the adequate conditions of thermal and airflow pattern the inlet grilles concentrated in this area with different heights and shapes. The outlet grilles in configuration 1 are at the middle of the ceiling in swimming pool area and in the side walls of the spectators stand area. Also, the inlet grilles are at the height of 3m from the floor in the side walls of the swimming pool and at the back wall of the spectator area. Configuration 2 outlet grilles are located in the ceiling at spectator stand area to investigate the effect of changing outlet position. Configuration 3 the inlet grilles are changed to be in 30cm height from the floor at swimming pool area. Configuration 4 the inlet grilles in the spectator stand area changed to the fence at 30 cm. To study the effect of shape change configuration 5 used circular inlet as recommended from ASHRAE at the ceiling, configuration 6 is studied the combination of best results from configuration 1 to configuration 5 to achieve suitable thermal comfort for the hall. The validation results show a good agreement between ANSYS Fluent 17.2 results and OpenFOAM software results. Moreover, the results of the comparisons between the 6 configurations revealed that the circular inlet in the ceiling at low-speed air supply shown better air distribution and thermal comfort in the spectators stand area than rectangle inlet. Also, the rectangle inlet in side walls in swimming pool area shows better better air distribution and thermal comfort than circular inlet at low-speed air supply due to the height of the hall, finally ACH for the water pool area and spectator stand should be different due to the number of persons per square meter
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,001 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».