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A Continuous, Semi-Automated Workflow: From 3D City Models with Geometric Optimization and CFD Simulations to Visualization of Wind in an Urban Environment
| Content Provider | MDPI |
|---|---|
| Author | Maximilian, Grün Ursula, Voß Deininger, Martina Piepereit, Raul Schneider, Sven Santhanavanich, Thunyathep Coors, Volker |
| Copyright Year | 2020 |
| Description | The concept and implementation of Smart Cities is an important approach to improve decision making as well as quality of life of the growing urban population. An essential part of this is the presentation of data from different sources within a digital city model. Wind flow at building scale has a strong impact on many health and energy issues in a city. For the analysis of urban wind, Computational Fluid Dynamics (CFD) has become an established tool, but requires specialist knowledge to prepare the geometric input during a time-consuming process. Results are available only as predefined selections of pictures or videos. In this article, a continuous, semi-automated workflow is presented, which ❶ speeds-up the preparation of CFD simulation models using a largely automated geometry optimization; and ❷ enables web-based interactive exploration of urban wind simulations to a large and diverse audience, including experts and layman. Results are evaluated based on a case study using a part of a district in Stuttgart in terms of: ➀ time saving of the CFD model preparation workflow (85% faster than the manual method), ➁ response time measurements of different data formats within the Smart City platform (3D Tiles loaded 30% faster than geoJSON using the same data representations) and protocols (3DPS provided much higher flexibility than static and 3D container API), as well as ➃ subjective user experience analysis of various visualization schemes of urban wind. Time saving for the model optimization may, however, vary depending on the data quality and the extent of the study area. |
| Starting Page | 657 |
| e-ISSN | 22209964 |
| DOI | 10.3390/ijgi9110657 |
| Journal | ISPRS International Journal of Geo-Information |
| Issue Number | 11 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-10-31 |
| Access Restriction | Open |
| Subject Keyword | ISPRS International Journal of Geo-Information Isprs International Journal of Geo-information Smart City Urban Environment Computational Fluid Dynamics Computational Wind Engineering Open Geospatial Consortium Environmental Simulation 3d Visualization Web Services Automated Workflow Citygml |
| Content Type | Text |
| Resource Type | Article |
