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TU Delft COVID App

  • Standardizes CFD simulations of breathing, speaking, coughing, and sneezing in custom indoor environments.
  • Automatically sets up geometry, meshing, and key simulation inputs in Ansys Fluent.
  • Models droplet transport, evaporation, thermal effects, and transient airflow behavior.
  • Built on TU Delft research, published scientific data, and dedicated PIV experiments.

Get Updates on TU Delft COVID App

    About

    The TU Delft COVID App helps engineers set up standardized CFD simulations of human expiratory activities in occupied indoor spaces such as hospitals, meeting rooms, classrooms, cinemas, and similar environments.

    Built for use with Ansys Fluent, the app gives engineers with a basic fluid dynamics background a faster and more structured way to model transient airflow and droplet transport scenarios without building the full setup from scratch.

    Developed in collaboration with TU Delft and SDC Verifier, the app turns a complex manual workflow into a guided process based on user-defined room, occupant, and activity inputs.

    People behind the TU Delft COVID app

    The TU Delft COVID app is a collaboration between Prof. Fulvio Scarano, deputy dean of the faculty of aerospace engineering and head of the AWEP department at TU Delft, the fluid mechanics expert Dr. Lorenzo Botto from the Process and Energy Department at TU Delft, simulation expert Ir. Wouter van den Bos, CEO of SDC Verifier and teacher from the faculty of mechanical, maritime and materials engineering (3mE) at TU Delft, and aerodynamics postdoctoral researcher Ir. David E. Faleiros also from 3mE, TU Delft.

     

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    What You Can Define

    • Room dimensions, windows, and doors
    • Ambient temperature and relative humidity
    • Number, location, posture, and orientation of occupants
    • Height, weight, and gender of each person
    • Expiratory activity per person: breathing, speaking, coughing, or sneezing
    • Droplet evaporation on or off
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    Core Capabilities

    Automated Fluent Setup

    Automatically creates the geometry, mesh, and core simulation setup in Ansys Fluent for transient indoor airflow and droplet transport studies.

    Human Expiratory Activity Models

    Includes transient flow direction, flow rate, droplet injection, and droplet size distribution for breathing, speaking, coughing, and sneezing.

    Physics-Based Scenario Control

    Supports unsteady flow, discrete phase modeling, SST k-ω turbulence modeling, droplet evaporation, and body-temperature-driven buoyancy effects.

    Research-Based Inputs

    Uses published scientific data and PIV experiments performed specifically for the app, with best practices and examples documented in the manual.

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