@Article{fdmp.2019.07808,
AUTHOR = {Haojie Pan, Xiaojun Zhou},
TITLE = {Experimental and Theoretical Analysis of the Drag Torque in Wet Clutches},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {15},
YEAR = {2019},
NUMBER = {4},
PAGES = {403--417},
URL = {http://www.techscience.com/fdmp/v15n4/33891},
ISSN = {1555-2578},
ABSTRACT = {Traditional  mathematical  models  cannot  predict  and  explain  the  phenomenon  by  which  the  drag  torque  (DT)  in  wet  clutches  rises  in  the  high-speed  zone.  In  order  to  evaluate  the  DT  in  such  conditions,  a  two-phase  air-fluid  mathematical  model  for  a  DT  with  grooves  was  elaborated.  The  mathematical  model  was  based  on  the  theory  of  viscous  fluid  flow.  A  two-phase volume of  fluid  model  was  also  used  to  investigate  the  distribution and volume fraction of air and fluid. Experiments on three friction plates with different  grooves  were  conducted  to  validate  the  resulting  mathematical  model.  It  was  found that the gap between plates decreased in the high-speed zone, thereby producing an increase of the DT in the high-speed zone. These results support the understanding of the physical phenomena relating to disengaged wet clutches,  and  provide  a  theoretical  basis  for the future improvement of drive systems.},
DOI = {10.32604/fdmp.2019.07808}
}