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Data portal · Method

Large-eddy simulation (LES) datasets of urban flow

Output from large-eddy simulations of flow, heat and pollutant transport over idealised building arrays and real neighbourhoods. LES resolves the energetic turbulent eddies, so these datasets typically provide instantaneous and time-averaged fields, turbulence statistics and canopy-averaged profiles; many include the geometry and input files needed to rerun them.

  • 58 resources
  • 2 field
  • 1 lab
  • 55 simulation
  • 2 benchmarks

All 58 resources, largest first

  1. Large-eddy simulations of turbulent airflow over 314 realistic urban neighbourhoods from 62 cities in 20 countries, with plan-area densities from 0.05 to 0.75 and several wind directions. Provides canopy-averaged statistics and flow fields, which are useful for canopy parameterisation, model validation and machine learning of urban wind.

    Simulation Simulation outputGeometry LES

    2025 · CC BY-NC 4.0 · Paper: UrbanTALES: A comprehensive dataset of Urban Turbulent Airflow using systematic Large Eddy Simulations ↗

  2. 224 large-eddy simulations of flow over idealised building-block arrays. They systematically vary plan-area density (8 values, 0.0625 to 0.64), aligned and staggered layouts, 7 building-height distributions, and perpendicular or oblique wind. A parameter sweep for canopy parameterisation and model validation.

    Simulation Simulation outputGeometry LES

    2025 · CC BY-NC 4.0 · Paper: UrbanTALES: A comprehensive dataset of Urban Turbulent Airflow using systematic Large Eddy Simulations ↗

  3. High-resolution morphology, land cover and modelled UTCI thermal comfort data for seven European case study areas of CARMINE. Useful as urban geometry input and thermal comfort reference.

    Collection · 9 parts Simulation GeometrySimulation output LES

    Leipzig, Germany · 2026 · CC BY-NC 4.0

  4. Precursor LES turbulent inflow boundary conditions for AIJ actual-urban benchmark case.

    Benchmark Simulation Simulation outputCase setup LES

    2026 · CC BY 4.0

  5. Input data for PALM-4U large-eddy simulations of coupled atmospheric and subsurface energy fluxes in Berlin. Useful as a case setup.

    Collection · 3 parts Simulation Case setupSimulation output LES

    Berlin, Germany · 2025 · CC BY 4.0

  6. Turbulent inflow data of a rough atmospheric boundary layer for LES of Michelstadt, the semi-idealised Central European city model from the University of Hamburg wind-tunnel test cases (CEDVAL-LES), not the real town.

    Simulation Simulation outputCase setup LES

    2024

  7. Benchmark package for source inversion of urban pollution dispersion using building geometry and sparse sensors, including PPMLES/MUST summaries. Useful for testing inversion and sensing methods.

    Benchmark Simulation Case setupSimulation output LESML / surrogate

    2026 · MIT

  8. Supplementary files for LES of firebrand transport and deposition over 12 idealised cubical arrays.

    Simulation Simulation outputSoftware & tools LES

    2026 · CC BY 4.0

  9. PALM model inputs and source code for high-fidelity urban air quality sensitivity simulations. Useful for dispersion LES setups.

    Simulation Case setupSoftware & tools LES

    2024 · CC BY 4.0

  10. LES output of an urban canopy and dense vegetated canopies over varying terrain complexity, for roughness-sublayer momentum statistics and TKE budgets.

    Simulation Simulation output LES

    2025 · CC BY 4.0

  11. Ensemble of LES of the MUST experiment for dispersion uncertainty.

    Simulation Simulation output LES

    2024 · CC BY 4.0

  12. Simulated plume concentration data in urban areas used to train the CityTransformer neural network. Useful for ML surrogates of urban dispersion.

    Simulation Simulation output ML / surrogateLES

    2022 · CC BY 4.0

  13. Simulation results for the Legerova street domain with air-quality observations. Useful for urban air quality and turbulence studies.

    Collection · 2 parts Simulation Simulation output LES

    Prague, Czech Republic · 2024 · CC BY 4.0 · Paper: Challenges of constructing and selecting the “perfect” boundary conditions for the large-eddy simulation model PALM ↗

  14. Source files, data and metadata of ExaQUte simulations of turbulent flow around rectangular bodies and the CAARC high-rise building with stochastic inlets. Useful as wind-engineering CFD case setups and output.

    Simulation Simulation outputCase setup LESRANS

    2021 · CC BY 4.0

  15. PALM-LES input files for simulating how vehicle fleet electrification changes local aerosol concentrations in Helsinki. Useful as a ready urban LES case setup.

    Simulation Case setup LES

    Helsinki, Finland · 2026 · CC BY 4.0

  16. PALM-4U input and output data for the Granollers domain from the KNOWING project. Useful as an urban microclimate LES case.

    Collection · 2 parts Simulation Simulation outputCase setup LES

    Granollers, Spain · 2026 · CC BY 4.0

  17. Raw simulation data and MATLAB scripts for a multi-scale analysis of flow over heterogeneous urban environments. Useful for urban boundary-layer and roughness research.

    Simulation Simulation outputSoftware & tools LES

    2025 · CC BY 4.0

  18. Large (10 GB) dataset accompanying a study of multi-scale flow for scale-aware urban-canopy models; description is missing. Likely simulation output.

    Simulation Simulation output LES

    2026 · CC BY 4.0 · Paper: Multi‐scale flow analysis for scale‐aware urban canopy models ↗

  19. Time-resolved non-isothermal turbulent inflow boundary data from LES of a stratified boundary layer, for OpenFOAM. Useful as inlet condition for building flow LES.

    Simulation Simulation outputCase setup LES

    2026 · CC BY 4.0

  20. Dataset accompanying the GMD article on a conservative immersed boundary method for multi-physics urban LES. Useful for model validation and cases.

    Simulation Software & toolsSimulation output LES

    2024 · CC BY 4.0

  21. Companion dataset for LES analysis of the role of trees in a street canyon.

    Simulation Simulation output LES

    2024 · CC BY 4.0

  22. PALM LES output for an urban crossing and a Berlin square (Ernst-Reuter-Platz) with different radiative transfer parameterisations. Useful for urban microclimate model comparison.

    Simulation Simulation output LES

    Berlin, Germany · 2020 · CC BY 4.0

  23. Data accompanying the uDALES 1.0 GMD paper, an LES model for urban environments. Useful as validation and case setups.

    Simulation Software & toolsSimulation outputCase setup LES

    2021 · CC BY 4.0

  24. PALM model source, configuration and input data for implementing traffic-induced heat and velocity in street-scale LES (Legerova street case). Useful for urban LES of traffic effects.

    Simulation Software & toolsCase setupSimulation output LES

    Prague, Czechia · 2026 · CC BY 4.0

  25. Nine low-cost ventilation screening fields and climate-analysis layers for Linz, Austria, for two westerly inflow cases, accompanying an LES benchmark protocol. Useful for evaluating ventilation screening methods.

    Simulation Simulation outputGeometry LES

    Linz, Austria · 2026 · CC BY 4.0

  26. PALM simulation results on the effects of street trees, green roofs and green walls on urban microclimate. Useful for urban greening studies.

    Simulation Simulation output LES

    2021 · CC BY 4.0 · Paper: High-fidelity simulation of the effects of street trees, green roofs and green walls on the distribution of thermal exposure in Prague-Dejvice ↗

  27. Simulation results for the Holesovicky domain in Prague covering air quality and thermal comfort scenarios. Useful for urban microclimate scenario studies.

    Simulation Simulation output LES

    Prague, Czechia · 2024 · CC BY 4.0

  28. SanDyPALM is a toolbox for creating static and dynamic drivers for PALM urban microclimate simulations. Useful for setting up urban LES cases.

    Simulation Software & toolsGeometry LES

    2025 · AGPL-3.0

  29. palmgeo converts open national or municipal geodata into verified static drivers for PALM. Useful for generating urban LES geometry inputs.

    Simulation Software & toolsGeometry LES

    2026 · GPL-3.0+

  30. PALMPaint is a pixel-painting tool to create and edit PALM static drivers with buildings, trees and streets. Useful for setting up urban LES geometries.

    Simulation Software & toolsGeometry LES

    2026 · GPL-3.0+

  31. 720 time-mean lattice-Boltzmann LES cases at 10 m resolution, 144 per city, spanning 16 wind directions, 3 reference speeds and 3 seasonal profiles, with 3D mean velocity and TKE plus building, terrain and footprint geometry. Very large (about 25 TB).

    Simulation Simulation outputGeometry LES

    Beijing, Shanghai, Guangzhou, Shenzhen, Hong Kong, China · 2026 · CC BY-NC-SA 4.0 · Paper: U3DWind: A low altitude wind field dataset and benchmark for urban air mobility ↗

  32. Input data for PALM with SALSA aerosol module evaluation, including building heights, leaf area density and aerosol emissions. Useful for urban aerosol LES setups.

    Simulation Case setupGeometry LES

    2018 · CC BY 4.0

  33. Energy spectra, kinetic energy time series and PALM input files for an urban flow modelling study.

    Simulation Simulation outputCase setup LES

    2023 · CC BY 4.0

  34. Surface-atmosphere energy exchange data from eddy-covariance and scintillometer measurements in Enschede. Useful for urban flux model evaluation.

    Collection · 2 parts Field MeasurementsSimulation output LES

    Enschede, Netherlands · 2026 · CC BY 4.0

  35. Source and test cases of urbanChemFoam, a weakly compressible reactive OpenFOAM solver for urban street canyons.

    Simulation Software & toolsCase setup LES

    2020 · Open (other)

  36. Calibration measurements, PALM simulations and survey data for urban thermal hotspots in a Czech city. Useful for evaluating urban microclimate LES and thermal comfort.

    Field Simulation outputMeasurements LES

    2026 · CC BY-NC 4.0

  37. Processed outputs and Python scripts from PALM, WRF and Fluent simulations for an urban model comparison.

    Simulation Simulation outputSoftware & tools LESRANSMesoscale model

    2025 · CC BY 4.0

  38. Large-eddy simulation code for city-scale air dispersion in which buildings act as diffusive obstacles. Useful for urban dispersion modelling.

    Simulation Software & tools LES

    2022 · GPL-3.0+

  39. PALM results for heat exposure and mitigation in a densely populated neighbourhood during a hot day.

    Simulation Simulation output LES

    2023 · CC BY 4.0 · Paper: Heat exposure variations and mitigation in a densely populated neighborhood during a hot day: Towards a people-oriented approach to urban climate management ↗

  40. 41 PALM NetCDF files of building-resolved wind fields for Camden, London, for scientific machine learning.

    Simulation Simulation output LESML / surrogate

    Camden, London, UK · 2026 · CC BY 4.0

  41. PALM-CO2 extends the PALM LES model for urban CO2 transport with biogenic flux and anthropogenic emissions. Useful for urban LES carbon dispersion studies.

    Simulation Software & tools LES

    2026 · GPL-3.0+

  42. City-wide PALM microclimate raster outputs for Tallinn for a reference period and 2030-2050 development scenarios. Useful for city-scale heat studies.

    Simulation Simulation output LES

    Tallinn, Estonia · 2026 · CC BY 4.0

  43. Observations and CAIRDIO simulation results for an urban dispersion case study in Dresden. Useful for model evaluation.

    Simulation Simulation outputMeasurements LES

    Dresden, Germany · 2023

  44. Processed LES output and Python post-processing scripts for hurricane boundary-layer turbulence over complex urban canopies using an immersed boundary method.

    Simulation Simulation outputSoftware & tools LES

    2026 · CC BY 4.0

  45. uDALES is open-source LES software for urban flow, dispersion and microclimate.

    Simulation Software & tools LES

    2024 · GPL-3.0 · Paper: A conservative immersed boundary method for the multi-physics urban large-eddy simulation model uDALES v2.0 ↗ +2

  46. Data and code for building-resolving dispersion modelling coupled with street-scale CO2 observations. Useful for urban dispersion and emission-estimation studies.

    Simulation Simulation output LES

    2026 · MIT

  47. Interactive D3Q19 lattice-Boltzmann wind analysis tool for 3D urban context.

    Simulation Software & tools LES

    2026 · MIT

  48. Data for a validated comparison of lattice-Boltzmann and finite-volume LES for large urban flow simulations.

    Simulation Simulation output LES

    2026 · CC BY 4.0

  49. Cobra probe wind-tunnel measurements and LES of flow over downtown Montreal.

    Lab MeasurementsSimulation output Wind tunnelLES

    Montreal, Canada · 2026 · CC BY-NC 4.0

  50. Data accompanying a study of embedded large-eddy simulation of the atmospheric boundary layer over an urban region using accelerated turbulence generation. Useful for LES inflow and urban boundary-layer modelling.

    Simulation Simulation output LES

    2025 · CC BY 4.0

  51. Cut-cell extension with non-orthogonal surfaces for the PALM model system, allowing partially solid grid cells. Useful for LES of flow around complex urban geometry.

    Simulation Software & tools LES

    2024 · GPL-3.0+

  52. Example binary output from the UltraHD CityCLIM large-eddy simulation model. Useful for model output formats and urban LES.

    Simulation Simulation output LES

    2024 · CC BY 4.0

  53. Source code of PALM 24.04 used in a study of PALM-SLUrb.

    Simulation Software & tools LES

    2024 · GPL-3.0+

  54. LES velocity fields over urban canopies with inputs and U-net predicted fields, including perturbed cases. Useful for training and testing ML surrogates of urban flow.

    Simulation Simulation output LESML / surrogate

    2022 · CC BY

  55. Large eddy simulation results over idealised urban topography. Useful for urban boundary-layer studies.

    Simulation Simulation output LES

    2020 · CC BY 4.0

  56. LES and DNS datasets of velocity and concentration around a tall building in an aligned array of rectangular buildings, from the DIPLOS project. Useful for studying scalar fluxes and validating dispersion models.

    Simulation Simulation output LESDNS

    2017 · Paper: Scalar fluxes near a tall building in an aligned array of rectangular buildings ↗

  57. Large-eddy simulation of street-scale flow and dispersion of multiple tracers in a realistic urban area, including wind-direction effects. Data available on request from the author.

    Simulation Simulation output LES

    2009 · Paper: Large-eddy simulation for flow and dispersion in urban streets ↗

  58. Large-eddy simulation data of flow, turbulence and dispersion over random urban-like obstacle arrays. Useful for urban canopy turbulence statistics and dispersion model validation.

    Simulation Simulation output LES

    2008 · Paper: Large-Eddy Simulation of Flows over Random Urban-like Obstacles ↗