Simulating wind-driven rain on building facades using Eulerian multiphase with standard k - epsilon turbulence model
Ladda ner
Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Engineering mathematics and computational science (MPENM), MSc
Publicerad
2015
Författare
Pettersson, Kaj
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Wind-driven rain (WDR) is responsible for many types of damage to building facades and contributes to runoff management problems in urban environments. Consequently there is significant interest in predicting WDR using CFD simulations. In this thesis an Eulerian multiphase (EM) method is proposed which includes solving the rain phase closure equations instead of using a response coefficient to approximate turbulent behavior. The simulations are conducted using AVL FIRE with standard k - epsilon model and are validated against experimental data. The method produces results with error ranging from 1% to 50%, comparable to previous methods. In addition the use of no-slip boundary conditions on the facade walls causes artificially high levels of WDR, requiring numerical or methodological compensation.
Beskrivning
Ämne/nyckelord
Strömningsmekanik och akustik , Building Futures , Hållbar utveckling , Fluid Mechanics and Acoustics , Building Futures , Sustainable Development