Full text of "The Flow Of Gases In Furnaces"
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64 APPLICATION OF THE LAWS OF HYDRAULICS Let "y = the initial velocity of the fluid in motion; Am=the specific weight of the fluid in motion; Ai = ihe specific weight of the fluid at rest. The weight of each unit of volume of the fluid in motion is less than A*. The upward force which acts upon each unit volume of the fluid in motion is, therefore, equal to A* — Aw. The upward acceleration due to this force is ^//////////A FIG. 43. The depth to which the jet will descend for this case is ry v2 sin2 5 Am For hot gases from 2g A° Am = A° Ao H=- 2 sn 2g Ao Ac l+at, 2g 1+att l+atm R_v2 sin2 B a+ti =v2 sin2 d 273+t, 2g tm-ti 2g X tm-tf For vertical jets, when 5 = 90°, this formula becomes H^X~l^k (F)