unexpected results -- CFD Online Discussion Forums

October 3, 2005, 00:42	unexpected results	#1
Kevin Rogers Guest Posts: n/a	My son is doing science project regarding action and reaction of the boat propelled by a water jet through a straw connected to a water tank on the boat. Got surprisingly unexpected results. There are 2-sets of experiments depending on the water amount of the water released. Both started with full-tank water. 1st set is half release(from top to mid-level of tank) and 2nd set is full release of water of water from the tank. The average velocity of the boat is greater in the case of half water release. Why? I could not give him why. Thanks.

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