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This paper reports on a study that demonstrated how to use two simplified methods--the box and momentum methods --to simulate complex diffusers in room airflow modeling by computational fluid dynamics. The two methods require additional flow information that is not available from product catalogs of diffuser manufacturers. This information includes the distribution of discharge air velocity, box size, and flow direction. This research developed a method of test (MOT) on how to obtain the additional information with minimal effort under ASHRAE Standard 70-1991.

Units: Dual

Citation: ASHRAE Transactions, vol. 107, pt. 2