@conference {tan2003rotational, title = {ROTATIONAL AIRFLOW IN ROUND DUCT AND ITS CONDITIONING FOR PARTICLE SAMPLING PURPOSE}, booktitle = {2003 ASAE Annual Meeting}, year = {2003}, pages = {1}, publisher = {American Society of Agricultural and Biological Engineers}, organization = {American Society of Agricultural and Biological Engineers}, author = {Tan, ZC and Zhang, Yuanhui and Ford, Steven E} }