| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an analytic method with which branching/joining can be uniformly handled in the analysis of one-dimensional pipeline flow including joining/branching. SOLUTION: Concerning a numerical analytic model with which a pipeline 6 for letting a fluid 7 flow is expressed with calculation points 8, 9, 10 and 11 and pipeline resistnaces 12, 13 and 14, at the calculation point 8 having possibility to be the branching point of joining point of flow, dummy resistance 18, 19 and 20 expressing the dummy pipeline of length '0' and calculation points 15, 16 and 17 corresponding to them are inserted to respective three pipeline connected to that calculation point 8, and calculation is performed while using the model provided as a result. In the case of this calculation, concerning the calculation point (such as the calculation point 10, for example,) to which any dummy resistance is not connected on upstream side, the calculation is performed by an ordinary CIP method or the like. Concerning the calculation point to which the dummy resistance is connected on the upstream side, the mixed average of values at the respective upstream calculation points is calculated at that calculation point, and this is defined as the calculated result at that calculation point.</p> |
