Molecular dynamics simulation of ionic liquid electrospray: Revealing the effects of interaction potential models

摘要: Abstract Electrospray thrusters with small size, high precision specific impulse, low power consumption are the most recommended propulsive equipments for micro-nano satellites. Molecular dynamics simulation is able to be used predict fundamental physics of electrospray and evaluate performance. However, accuracy molecular results critically depends on interaction potential models used. Therefore, present paper discusses effect different simulations ionic liquid 1-ethyl-3-methyl-imidazolium tetrafluoroborate. The reduced charge all-atoms model, full effective-force coarse-grained model Merlet reported in literature comparison, comparison also made experimental data elucidate which might realistic. process Taylor cone formation, currents, energy characteristics velocity distribution analyzed under varying operating conditions. Our calculations indicate that accurate electrospray. In contrast, fail reveal characteristics. not characterize underestimate overestimate performance respectively. It found particles within almost unchanged