significantly. similarly. by knowing the concentration at select points in the cabin far field the general ppath of passenger contaminants can be reaced throughout the cabin and the exposure of non-seated occuoants (e.g.flight attendants) can be examined. results will be presented here for the window source and center source cases, for further information see dygert 24to allow ease of comparison of the contaminant concentration in the passenger bzs and select cabin far field point, the metric of air quality index aqi 31 is used, defined here aswhere cei is mass-averaged concentration of the ith contaminant leaving the cabin(through the floor outlet and suction orifices) ci is the local concentration of the ith contaminant in the cabin flow field. and cji is the mass-averaged concentration of the ith contaminant entering the domain through the ventilation system note that in all cases studide here, cji is zero the distinction is made here that an AQi value of zero represents a local contaminant concentration equal ti that of the well-mixed condition,positive AQI values (maximum of one) represent air that is cleaner than well-mixed,and negative AQi values represent air that is dirtier than well mixed3.3 fig. shows thr aqi values at thr five far field locations (see fig.3 for far field measurement locations) comparing the results of the suction-off and the different suction systems, for the emissions of a window sourec passenger, fig7 shows that in the case without a suction, much of the cabin see air that is well-mixed(ie aqi=0)with some points nearest the sourc worse than well-mixed (ie aqi<0) while the aqi at the window ceiling point is slightly better than well-mixed, ut still shows than the air supply jet has quickly mixed
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