

@mastersthesis {6907,
	title = {Air movements in a hospital operating theatre - an experimental study using {PIV} and flow visualisation},
	year = {2005},
	note = {U196171},
	school = {The University of Manchester (United Kingdom)},
	type = {phdPh.{D}.},
	address = {Ann Arbor},
	abstract = {The work was carried out in small-scale fluid flow models representing an operating room with different flow patterns, with special emphasis being placed on the "exponential laminar airflow" system. The experimental work started with a detailed investigation of the scaling rules and their consequences in a one-tenth scale model using both water and air flow. This analysis was followed by a series of experiments in which both isothermal and buoyancy driven flow conditions were simulated. The detailed flow structure was examined using laser sheet visualisation and particle image velocimetry. The key finding of the study was that dividing the operating room into three cleanliness zones offers greater flexibility over the working space within the operating room in comparison with a two-zone ventilation system. However, it must also be mentioned that the efficiency of the three-zone system depends crucially on the velocity ratio at the inlet. Another finding was that the existence of stationary isothermal flow obstructions within the room does not affect the undirectionality of the flow in the central working area, although, these obstructions cause unsymmetrical recirculation of the flow in the room. The buoyancy-influenced experiments revealed that, as observed in full size models, the behaviour of the flow pattern in the scaled-down airflow model depends on both the value of the Richardson number and the location of the heat sources within the room. Finally, the study found that the ventilation method with low-level exhaust vents gave the most stable flow patterns relative to both the high-level and combined high/low level exhaust vents. It is worth mentioning that this result was obtained by using the same inlet diffuser at the centre of the ceiling for all the three ventilation systems.},
	keywords = {(UMI)AAIU196171, 0571:Pathology, Bibliographies, Health and environmental sciences, Pathology, Psychology{\textendash}Abstracting, Statistics},
	url = {http://search.proquest.com/docview/301642824?accountid=14270},
	author = {Mukhaiber, H}
}
