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An Immersed Boundary CFD Code for Building and Environment Applications

  • M. MulasEmail author
  • R. Zucca
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 27)

Abstract

We present a novel Computational Fluid Dynamics (CFD) software developed for the Building and Environment applications. The technical noveltries are represented by the use of the Immersed Boundary method which allows a fully automated and extremely quick Cartesian Grid generation process. The result is an easy work-flow that takes less than 10 min to prepare the application, no matter of the geometrical complexity of the object of the simulation.

The software focuses on 4 outdoor wind applications: the evaluation of the wind load on constructions, the so called pedestrian comfort analysis on urban districts, the natural ventilation in buildings and the transport and diffusion of contaminants on cities and environmental sites, both in steady-state and transient modes.

The equation for the contaminant is decoupled from the solution of the 5 thermo-fluid dynamic equations (conservation of mass, equation of motion and conservation of energy), and it can be solved on an available, previously computed solution, in frozen mode.

A fully implicit solution algorithm drives the iterative method to the steady-state solution. In case a transient analysis is of interest, the same solution algorithm is used to follow the time evolution time-step after time-step.

The software has been validated against available wind tunnel data.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Vento CFDCagliariItaly

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