@book{ Solr-6542364, title = {Visualization of flows in packed beds of twisted tapes}, series = {NASA technical memorandum ;}, editor = {NASA Glenn Research Center}, address = {Cleveland, Ohio : Hanover, MD : Springfield, VA}, publisher = {National Aeronautics and Space Administration, Glenn Research Center ; Available from NASA Center for Aerospace Information ; National Technical Information Service [distributor}, year = {2002}, url = {http://purl.access.gpo.gov/GPO/LPS42231} }