01611nas a2200193   4500008004100000245006400041210006400105260000900169300001400178490000700192520097000199653003101169653002601200653001901226653001501245653002801260100001201288856011701300       2012                        eng d00aApplications of numerical calculation in engineering design0 aApplications of numerical calculation in engineering design  c2012  a308 - 3110 v103 aSuch problems are often encountered in engineering designs: drawing moving targets orbits, however either there is no analytical formula of the orbit equation, or the derivation of getting a track equation is cumbersome; designing size of an equipment requires solving a complex transcendental equation. In order to address these matters, here were cited three instances, plotting the trajectory of a charged particle in a non-uniform magnetic field; drawing the spacecraft's orbit; designing the central axis size of an electrostatic precipitator cylinder. Through introduction of numerical calculation, the derivations of the orbits equations were avoided and the trajectories of a charged particle and the spacecraft were plotted respectively; solution of transcendental equation was found and the required dimension of an electrostatic precipitator cylinder in the design was got. So the numerical calculation plays a huge supporting role in engineering design.10aElectrostatic precipitator10aNumerical calculation10aOrbit equation10aSpacecraft10aTranscendental equation1 aLei, Q.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84870802969&partnerID=40&md5=2de3ed3efc1aa45fdb83fa6b27b27ef0