About City Digital Twin Project
City Digital Twin Pilot Project aims to implement the digital twin as a technical solution that scales to real-world problems, including design, exploration and experimentation of urban environment and processes.
3D City Model of Lozenets
The 3D city model of District Lozenets and its visualisation are the first steps towards implementation of City Digital Twin pilot project of GATE Institute. It covers the Buildings and Relief thematic modules of CityGML 2.0. The 3D model of the buildings is hosted on the Cesium ion platform and visualized using CesiumJS.
Key words: 3D City Model, CityGML 2.0, Cesium ion, CesiumJS
Generative urban design
The parametric urban planning naturally follows the basic idea of the digital twin – "design, test and build first digitally". A tool that provides data-driven decision support on urban planning is developed based on preliminary defined neighbourhood indicators related to population density, access to social infrastructure, transport connectivity, etc.
Key words: parametric urban planning, genetic algorithms
Project
Pedestrian wind comfort
Computational Fluid Dynamics (CFD) simulations are now being widely used for the prediction and assessment of high-rise building aerodynamics and pedestrian wind comfort. Results from CFD wind simulation are reliable sources of quantitative and qualitative data useful to make important design decisions.
Key words: CFD, building aerodynamics, wind flow
Indoor air quality & thermal comfort
Indoor air quality and thermal comfort are two factors that affect occupant’s health, performance, and overall well-being. They are modelled, analyzed and predicted by applying CFD, so that suitable control measures can be taken in due time. The overall building design, ventilation and heating effectiveness is assessed and optimized through different what-if scenarios.
Key words: CFD, air quality, thermal comfort
Project
Child Facilities Coverage
An automated approach for assessment of social facility coverage is developed. It solves a supply and demand problem based on a graph network, where kindergartens and nurseries are considered as supply nodes, and residential buildings as demand nodes. Supply and demand are balanced based on a 15-min walking distance and the capacity of social facilities.
Key words: Network analysis, walkability, public facilities coverage
Publication
Geospatial Air Quality Prediction
The aim is to provide a way of combining data from different sensor stations and to develop a platform for the real-time prediction of air quality throughout Sofia city. To achieve this, methods from the field of uncertainty quantification and statistical learning are used, which enable the analysis of existing sensor data in a probabilistic way.
Key words: Air quality, geospatial prediction, uncertainty quantification
Project
10 Minutes Walkable City
Walking is the most accessible form of mobility, delivering benefits to both cities and their residents. To increase walkability, the pedestrian network, integrating all transportation modes, should be optimized. The pedestrian accessibility to public transport stops and parks in Sofia is evaluated by applying network and spatial analysis based on a 10-min walking distance.
Key words: Walkability, Urban Network Analysis, Spatial Syntax
Project
Urban Heat Islands
The study aims to numerically estimate the impact of UHI in Sofia and its surroundings on the air temperature using the state-of-the-art Weather Research and Forecasting (WRF) with very high resolution. The study also estimates the impact of building and transport separately..
Key words: Urban Heat Island, Thermal environment, Energy consumption, WRF model, Numerical simulation
Project
3D City Model of Lozenets
The 3D city model of District Lozenets and its visualisation are the first steps towards implementation of City Digital Twin pilot project of GATE Institute. It covers the Buildings and Relief thematic modules of CityGML 2.0. The 3D model of the buildings is hosted on the Cesium ion platform and visualized using CesiumJS
Key words: 3D City Model, CityGML 2.0, Cesium ion, CesiumJS
Generative urban design
The parametric urban planning naturally follows the basic idea of the digital twin – "design, test and build first digitally". A tool that provides data-driven decision support on urban planning is developed based on preliminary defined neighbourhood indicators related to population density, access to social infrastructure, transport connectivity, etc.
Key words: parametric urban planning, genetic algorithms
Project
Child Facilities Coverage
An automated approach for assessment of social facility coverage is developed. It solves a supply and demand problem based on a graph network, where kindergartens and nurseries are considered as supply nodes, and residential buildings as demand nodes. Supply and demand are balanced based on a 15-min walking distance and the capacity of social facilities.
Key words: Network analysis, walkability access, public facilities coverage
Project
Pedestrian wind comfort
Computational Fluid Dynamics (CFD) simulations are now being widely used for the prediction and assessment of high-rise building aerodynamics and pedestrian wind comfort. Results from CFD wind simulation are reliable sources of quantitative and qualitative data useful to make important design decisions.
Key words: CFD, building aerodynamics, wind flow
Project YouTube
Geospatial Air Quality Prediction
The aim is to provide a way of combining data from different sensor stations and to develop a platform for the real-time prediction of air quality throughout Sofia city. To achieve this, methods from the field of uncertainty quantification and statistical learning are used, which enable the analysis of existing sensor data in a probabilistic way.
Key words: Air quality, geospatial prediction, uncertainty quantification
Project
Indoor air quality & thermal comfort
Indoor air quality and thermal comfort are two factors that affect occupant’s health, performance, and overall well-being. They are modelled, analyzed and predicted by applying CFD, so that suitable control measures can be taken in due time. The overall building design, ventilation and heating effectiveness is assessed and optimized through different what-if scenarios.
Key words: CFD, air quality, thermal comfort
Project
Urban Heat Islands
The study aims to numerically estimate the impact of UHI in Sofia and its surroundings on the air temperature using the state-of-the-art Weather Research and Forecasting (WRF) with very high resolution. The study also estimates the impact of building and transport separately..
Key words: Urban Heat Island, Thermal environment, Energy consumption, WRF model, Numerical simulation
Project
10 Minutes Walkable City
Walking is the most accessible form of mobility, delivering benefits to both cities and their residents. To increase walkability, the pedestrian network, integrating all transportation modes, should be optimized. The pedestrian accessibility to public transport stops and parks in Sofia is evaluated by applying network and spatial analysis based on a 10-min walking distance.
