Due to the specific operation requirements, the deep-sea manned diving system studied in this paper is different from the conventional submersible. Its unconventional design and layout lead to the change of air distribution mode. Therefore, in order to meet the environmental requirements of cabin staff, at the beginning of the design, this paper carried out the numerical simulation of air distribution of the whole cabin system. The governing equations used in the numerical calculation in this paper include continuity equation, momentum equation and energy equation, and the turbulence model adopts model k − ε. The computing domain adopts a combination of structured and unstructured network, and locally encrypts the key areas. According to the numerical simulation results, the distribution of temperature field and velocity field in the whole diving system under the condition of air supply at both ends of the living cabin is analyzed. According to the numerical simulation results, the nonuniformity coefficients of velocity field and temperature field in key areas are given. In this paper, the simulation results provide a technical basis for the overall air distribution design of diving system and point out the direction for optimization research.
Due to the specific operation requirements, the deep-sea manned diving system studied in this paper is different from the conventional submersible. It consists of three parts, and the internal layout is more complex. Its unconventional design and layout lead to the previous air distribution mode is no longer applicable. Another feature of the diving system is that the continuous working time of the staff in the cabin is long. Short work, to a certain extent, people's requirements for the environment are generally not high. However, the information in the confined space is complete and the work can last for tens of days. In this case, the cabin personnel are very concerned about the quality of the environment. The air quality and ambient temperature in the SDC system will not only directly affect the work efficiency of staff, but also affect their health to a great extent.
