AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Using Dynamic Mesh to Investigate Deposition Pattern of NanoParticle Controlled by Electric-field
ALI MOHAMADI NASRABADI, Jungho Hwang, Yonsei University, Department of Mechanical Engineering
Abstract Number: 90 Working Group: Instrumentation and Methods
Abstract Defined particle deposition is a well-established process in the field of printing applications. However, the demand for precision beyond the resolution of the human eye was hardly considered in these applications. In this work, we simulated deposition of 30 nm silver nano-particles over silver grid structures. For this goal, a complete aerosol deposition process was studied and simulated using a commercial CFD code, FLUENT v14. Electrical field has been simulated by solving a scalar transport equation and electrostatic force was applied by using a User Define Function, DEFINE_DPM_BODY_FORCE. Simulation of deposition process is carried out by using Fluent Dynamic Mesh option. By using DEFINE_DPM_BC, it is possible to extract necessary data for calculating deposition height, for example mass flux of hit particle on the substrate, area, place and number of deposited particles. Taking into account particles density and time, it is possible to calculate deposition growth height in each cell. DEFINE_GRID_MOTION can move each grid vertices on the substrate independently. Calculated height is compared with experimental data to verify simulation process. The measurement of the deposited thickness on the target gives an overall verification of the accuracy of the numerical model for particle trajectories.