Author/Authors :
Zabetian، M. نويسنده PhD degree candidate in the School of Mechanical Engineering at Sharif University of Technology, Tehran, Iran. , , Sha i، M.B. نويسنده is Associate Professor in the Mechanical Engineering School at Sharif University of Technology, Tehran, Iran , , Saidi، M.H.. نويسنده is Professor of Mechanical Engineering and Vice President of Academic Affairs at Sharif University of Technology, Tehran, Iran.. , , Saidi، M.S. نويسنده , , Rohani، R. نويسنده is an MS degree student in the School of Mechanical Engineering at Sharif University of Technology, Tehran, Iran. ,
Abstract :
Identi cation and minimization of error sources are important issues in
experimental investigations. Mainly in micro-scale problems, precise settings should be
applied to high-tech test beds to reduce disturbance and induced motion. An experimental
study is conducted to assess the role of induced forces and velocity elds in a particulate
system used for particle identi cation and separation. Two main e ects caused by
disturbances are sampling errors and induced motion in the channel, either on
uid or
dispersed phases. Di erent disturbance scenarios are implemented on the test bed and then
the system response is reported. In order to assess induced motion as a result of applied
forces, microscopic imaging of particle movement in the channel and image processing of
the results, are performed. Results of particle sampling indicate that optimized pneumatic
settings should be implemented to secure a safe level of sampling error. Results for induced
ow show that the velocity eld can a ect the operation of the manipulation mechanism.
Methods for capturing the induced force and velocity elds can be implemented in the
relevant applications, such as micro-particle systems and cellular studies.
