the x- and y- components of the anchoring force of the splitter be FRx and FRz, and assume them to be in the positive directions. Noting that V2 = V1 = V and mm&&212=, the momentum equations along the x and z axes become 00)sin()sin()1(coscos)(22212211221=−−++=−=−=θθθθVmVmFVmVmVmFRzRx&&&&&
Substituting the given values, 0=−=
⋅°=RzRxFFlbf 11352ft/slbm 32.2lbf 11)-5ft/s)(cos4 lbm/s)(20 6240(
The negative value for FRx indicates the assumed direction is wrong, and should be reversed. Therefore, a force of 1135 lbf must be applied to the splitter in the opposite direction to flow to hold it in place. No holding force is necessary in the vertical direction. This can also be concluded from the symmetry.
Discussion In reality, the gravitational effects will cause the upper stream to slow down and the lower stream to speed up after the split. But for short distances, these effects are indeed negligible.
the x- and y- components of the anchoring force of the splitter be FRx and FRz, and assume them to be in the positive directions. Noting that V2 = V1 = V and mm&&212=, the momentum equations along the x and z axes become 00)sin()sin()1(coscos)(22212211221=−−++=−=−=θθθθVmVmFVmVmVmFRzRx&&&&&Substituting the given values, 0=−=⋅°=RzRxFFlbf 11352ft/slbm 32.2lbf 11)-5ft/s)(cos4 lbm/s)(20 6240(The negative value for FRx indicates the assumed direction is wrong, and should be reversed. Therefore, a force of 1135 lbf must be applied to the splitter in the opposite direction to flow to hold it in place. No holding force is necessary in the vertical direction. This can also be concluded from the symmetry.Discussion In reality, the gravitational effects will cause the upper stream to slow down and the lower stream to speed up after the split. But for short distances, these effects are indeed negligible.
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