Application of Novel Measurement and Computational Techniques on Investigation of Air Flow in Ventilation Systems of Energy Extremely Efficient (“Passive”) Buildings

Research objects of this project are complex theoretical, experimental and numerical investigations of the complex turbulent velocity field structure in swirl flow field behind the axial fan impellers and their correlation to the fan geometrical and energy characteristics of them, as well as their application in ventilation of the energy extremely efficient (passive) objects. Both mechanical and passive ventilation methods will be investigated in the project. Investigations will be organized in four parts. First part is flow research, energy and design characteristics of the axial fans, as well as statistical characteristics of the turbulent swirl flow field on their pressure side by use of novel experimental and numerical (CFD) methods. Analysis of vortex dynamics, deformation fields and fields of coherent vortex structures as well as definition of appropriate theoretical models is the second stage. The third part would involve investigation and testing of existing ventilation systems in energy efficient objects, as well as design and manufacturing of blower door test equipment with investigated fans. Computer and real model design of the energy efficient object would be in the fourth part of the project. It is planned to design mobile object with changeable construction and insulation properties. Measurements (PIV, LDA, thermovision, blower door tests and etc.) will be employed at the object positioned in various locations.