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In this paper, the numerical hydrodynamic simulation has been carried out by using measured topographic data and related tidal information. The oil particle tracking module of MIKE21 is adopted to study the processes of drifting and turbulent diffusion of oil particles on the water surface, where four working conditions, namely, static wind, dominant wind direction, maximum wind direction and most unfavourable wind direction, are applied. Results show that Xiushan Island will be the apparent ‘victim’ in the cases of oil spill in all wind directions. Meanwhile, due to the existence of Changbai Island and Xiushan Island, the diffusion process of oil particles is obviously retarded to impact the protected marine areas.

With the construction of a large number of affordable housing and the development of green buildings, the design of green affordable housing has become a new concern and research topic in China’s residential architectural design, and the interior design of affordable housing has become a top priority. This article takes Changchun city as an example, through the research of affordable housing in Changchun, visit, found the main problems existing in the status quo, in view of the problems put forward housing interior space design optimization principle, and according to the design principles of indoor space scale, provides a good green indoor living environment for green residential tenants in cold areas.

After half a century of development, green buildings have gradually formed a relatively sophisticated system. Based on the development status of green buildings and the climatic characteristics of cold region cities, the paper analyses the key technologies applicable to cold region cities in combination with actual projects, and provides a theoretical and applied basis for promoting the sustainable development of green buildings in severe cold regions.