TY - JOUR
T1 - Simulation of Liquid Metal Droplets from Field Emission
JO - Communications in Computational Physics
VL - 4
SP - 640
EP - 661
PY - 2007
DA - 2007/02
SN - 2
DO - http://doi.org/
UR - https://global-sci.org/intro/article_detail/cicp/7921.html
KW - Field emission electric propulsion, modeling, level set, boundary element method.
AB - <p style="text-align: justify;">Liquid metal droplets are accelerated by electrostatic forces in a process
known as field emission. In this study, we simulate the emission of charged indium
droplets on a needle in 2D cylindrical coordinates. The boundary element method is
used to rapidly and accurately calculate the electric field on the fluid surface, which
is then advected forward in time using level sets. This is the first time these methods have been combined, and this combination addresses difficult detachable surface
tracking issues successfully. A histogram of droplet charge-to-mass ratio is generated
in which it is predicted that smaller satellite droplets are more densely charged. In
addition, our model is compared with independent pre- and post-snap off data and
produces good agreement with the result.</p>