Analysis of a helium balloon

Hot-air balloon enthusiasts when traveling at high altitudes need to have an inner Helium balloon inside the normal hot-air canopy. The area below the Helium balloon forms a cone into which hot air is fired through gas tanks. A hot-air balloon enthusiast wished to make a record breaking attempt at flying around the globe non-stop. Computational Fluid Dynamic Analysis was conducted on the balloon which consisted of studying the effect of the suns heat on the helium at various times of the day and the optimum amount of heat to be fired into the air cone below the helium balloon to maintain optimum altitude. Heavily expensive and cumbersome physical testing was avoided in this case.