Bulk Grain Cargo Hold Condensation Based on Computational Fluid Dynamics
In order to assess whether condensation will occur on the shipside of a bulk grain cargo hold during transportation at sea, this paper has established a ventilation model for the bulk cargo hold of the ship, and optimized the model according to the characteristics of the solid bulk grain stowed on a...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/13/23/12878 |
| _version_ | 1797400400811261952 |
|---|---|
| author | Honggui Wang Hao Zhou |
| author_facet | Honggui Wang Hao Zhou |
| author_sort | Honggui Wang |
| collection | DOAJ |
| description | In order to assess whether condensation will occur on the shipside of a bulk grain cargo hold during transportation at sea, this paper has established a ventilation model for the bulk cargo hold of the ship, and optimized the model according to the characteristics of the solid bulk grain stowed on a moving ship at sea. The temperature field, micro-airflow field and relative humidity field of the bulk grain in a cargo hold are simulated by using fluent software (v.2020). Incorporating the impact of grain moisture exchange, the Equilibrium Relative Humidity (ERH) method is introduced alongside the Dew Point (DP) method to determine the condensation on the shipside of the cargo hold. The results of simulation are in agreement with the practical observation results obtained from an actual ship with a heavy cargo damage claim. Conclusively, this paper finds that the risk of the condensation on the shipside of a bulk grain cargo hold always exists if the inner part of the shipside is directly in contact with the grain. Meanwhile, when the grain temperature near the shipside decreases, the moisture in the cargo hold will migrate to the shipside due to the temperature gradient. Furthermore, the longer the voyage, the more obvious the migration of moisture from the central part of the bulk grain to the shipside, and the greater the risk of condensation. |
| first_indexed | 2024-03-09T01:55:01Z |
| format | Article |
| id | doaj.art-a90d4fc80c214e90b62bb6b470aabc1e |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T01:55:01Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a90d4fc80c214e90b62bb6b470aabc1e2023-12-08T15:12:02ZengMDPI AGApplied Sciences2076-34172023-11-0113231287810.3390/app132312878Bulk Grain Cargo Hold Condensation Based on Computational Fluid DynamicsHonggui Wang0Hao Zhou1Navigation College, Dalian Maritime University, Dalian 116026, ChinaNavigation College, Dalian Maritime University, Dalian 116026, ChinaIn order to assess whether condensation will occur on the shipside of a bulk grain cargo hold during transportation at sea, this paper has established a ventilation model for the bulk cargo hold of the ship, and optimized the model according to the characteristics of the solid bulk grain stowed on a moving ship at sea. The temperature field, micro-airflow field and relative humidity field of the bulk grain in a cargo hold are simulated by using fluent software (v.2020). Incorporating the impact of grain moisture exchange, the Equilibrium Relative Humidity (ERH) method is introduced alongside the Dew Point (DP) method to determine the condensation on the shipside of the cargo hold. The results of simulation are in agreement with the practical observation results obtained from an actual ship with a heavy cargo damage claim. Conclusively, this paper finds that the risk of the condensation on the shipside of a bulk grain cargo hold always exists if the inner part of the shipside is directly in contact with the grain. Meanwhile, when the grain temperature near the shipside decreases, the moisture in the cargo hold will migrate to the shipside due to the temperature gradient. Furthermore, the longer the voyage, the more obvious the migration of moisture from the central part of the bulk grain to the shipside, and the greater the risk of condensation.https://www.mdpi.com/2076-3417/13/23/12878cargo holdtemperature and humidity fieldcondensationequilibrium moisturenumerical simulation |
| spellingShingle | Honggui Wang Hao Zhou Bulk Grain Cargo Hold Condensation Based on Computational Fluid Dynamics Applied Sciences cargo hold temperature and humidity field condensation equilibrium moisture numerical simulation |
| title | Bulk Grain Cargo Hold Condensation Based on Computational Fluid Dynamics |
| title_full | Bulk Grain Cargo Hold Condensation Based on Computational Fluid Dynamics |
| title_fullStr | Bulk Grain Cargo Hold Condensation Based on Computational Fluid Dynamics |
| title_full_unstemmed | Bulk Grain Cargo Hold Condensation Based on Computational Fluid Dynamics |
| title_short | Bulk Grain Cargo Hold Condensation Based on Computational Fluid Dynamics |
| title_sort | bulk grain cargo hold condensation based on computational fluid dynamics |
| topic | cargo hold temperature and humidity field condensation equilibrium moisture numerical simulation |
| url | https://www.mdpi.com/2076-3417/13/23/12878 |
| work_keys_str_mv | AT hongguiwang bulkgraincargoholdcondensationbasedoncomputationalfluiddynamics AT haozhou bulkgraincargoholdcondensationbasedoncomputationalfluiddynamics |