No, there is no such thing as a flameless sparkler. They are also (technically) a pyrotechnic effect - which may have some flow on effects for you depending on your local laws (generally they are excepted from legislation except perhaps total amount that can be stored on site). Also, the standard 8-10" sparklers light fairly easily with a standard match, if your director wants the large ones - they need to be lit with something a lot hotter (like another sparkler).
From a safety aspect, the sparklers burn at between 1000oC (1800oF) and 1600oC (3000oF), eject slag which can seriously mess with your floor over a long run, and produce not inconsiderable amount of smoke (the bad kind, not the food grade suspension of water molecules we use for lighting effects). They are also responsible for 16% of fireworks injuries in the US and have started numerous fire (including devestating bushfires).
Nothing is insurmountable though.