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.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Mulas M et al (2002) Efficient parallel computation of flows of arbitrary fluids for all regimes of Reynolds, Mach and Grashof numbers. Int J Heat Fluid Flow 12(6):637–657
Iaccarino G, Verzicco R (2003) Immersed boundary technique for turbulent flow simulation. Appl Mech Rev ASME 56:331–347
Kang S, Iaccarino G, Moin P (2009) Accurate immersed boundary reconstructions for viscous flow simulations. AIAA J 47(7):1750–1760
Mittal R, Iaccarino G (2005) Immersed boundary method. Ann Rev Fluid Mech 37:239–261
Dagnew AK, Bitsuamalk GT, Merrick R (2009) Computational Evaluation of wind pressure on tall buildings. In: 11th American conference on wind engineering, San Juab, Puerto Rico, 22–26 June 2009
Yoshie R et al (2007) Cooperative project for CFD prediction of pedestrian wind environment in the Architectural Institute of Japan. J Wind Eng Ind Aerodyn 95:1551–1578
Peren JI et al (2015) CFD analysis of cross-ventilation on a generic isolated building with asymmetric opening positions. Build Environ 85:263–276
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this paper
Cite this paper
Mulas, M., Zucca, R. (2019). An Immersed Boundary CFD Code for Building and Environment Applications. In: Ricciardelli, F., Avossa, A. (eds) Proceedings of the XV Conference of the Italian Association for Wind Engineering. IN VENTO 2018. Lecture Notes in Civil Engineering, vol 27. Springer, Cham. https://doi.org/10.1007/978-3-030-12815-9_41
Download citation
DOI: https://doi.org/10.1007/978-3-030-12815-9_41
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-12814-2
Online ISBN: 978-3-030-12815-9
eBook Packages: EngineeringEngineering (R0)