. The Locomotive . lug in its cylindrical tube. Finally, if the bubble, instead of being rectangular, is more orless oval or ellipsodial, as in Fig. 4, the pressure actually developedwill agree with the calculated pressure to an order of approxima-tion corresponding to the (unknown) degree in which the condi-tions in the actual case conform with those that were assumedto exist, in deriving the formula. After the pressure that is due to the impact has been generated,it is transmitted through the water to the boiler shell. In thistransmission it will be somewhat lessened in intensity, and itwill
. The Locomotive . lug in its cylindrical tube. Finally, if the bubble, instead of being rectangular, is more orless oval or ellipsodial, as in Fig. 4, the pressure actually developedwill agree with the calculated pressure to an order of approxima-tion corresponding to the (unknown) degree in which the condi-tions in the actual case conform with those that were assumedto exist, in deriving the formula. After the pressure that is due to the impact has been generated,it is transmitted through the water to the boiler shell. In thistransmission it will be somewhat lessened in intensity, and itwill be propagated mainly in the direction in which the top slabof the bubble collapses. We have supposed, for the sake of simplicity, that the bubblecollapses vertically; but since the water in the boiler is thrownabout in an utterly indescribable manner, the actual collapse maytake place horizontally or obliquely, and hence the maximum pres-sure may be exerted upon the boiler shell sidewise, or in any Fig. 3. — Rectangular Bubble.
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Keywords: ., bookauth, bookcentury1800, bookdecade1860, bookidlocomotive32hart
