ASSESSMENT OF UNDERFLOOR VENTILATION OF HISTORIC BUILDINGS USING ANSYS CFX
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Technical University of Košice, Slovakia |
Publication date: 2018-05-21
BoZPE 2013;(1):98–106
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ABSTRACT
Concepts of remedial treatments of historic buildings using ventilated floors,
with a few exceptions, are with considerable popularity preferred by the representatives
of monument protection. The fact that they require small interventions in the
masonry is of great benefit for compliance with the methodology of cultural heritage
protection, as is the fact that such interventions do not compromise the structural
analysis of buildings. These concepts have gained great popularity also because they
can be considered kind of a "return" to historical example. With these technologies
we return to the methods and principles that the ancient Egyptians were already
familiar with. The paradox is that these methods are used for many centuries, until
today they are only proposed on the basis of empiricism. There is no proven relationship
and calculation nor any literature that would address the airflow in floors,
ventilation ducts and galleries around the base building construction. The remaining
problem is the draft of air cavities in general. The exact calculation of airflow in the
underfloor cavity has not yet been formulated. To assessment the airflow in the air
cavity the recently often used CFD simulations can be employed. Using simulation,
respective design cycles, which shall be ultimately verified by laboratory experiments
and also by in situ measurements, may be accelerated.