A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PIPE NETWORK ANALYSIS DEVICE, PIPE NETWORK ANALYSIS METHOD, AND PIPE NETWORK ANALYSIS PROGRAM
To provide a novel method for realizing a pipe network analysis in a mesh flow rate method under consideration of pressure dependency of an outflow rate.SOLUTION: A pipe network analysis device calculates, to an analysis graph in which pipeline branches, and nodal points of each pipeline branch or water head known nodal points exhibiting connection points of the pipeline branch and distribution basins R1, R2 at both ends of the pipeline branch, water head in the nodal point and an outflow rate from the nodal point or a pipeline as a pressure dependent amount. The pipe network analysis device comprises: wood and mesh group determination means which connects all of the nodal points in the analysis graph ans which is a branch aggregate not constituting a loop; each nodal point effective water head calculation means performing non-pressure dependent pipe network analysis processing using a wood branch fixed flow rate and a mesh flow rate; means for connecting pressure deficient nodal points with reference nodal points by virtual connection branches; each nodal point effective water head calculation means which updates an outflow rate in the pressure deficient nodal points as a pressure dependent amount of a distribution pipe network and which performs pressure dependent pipe network analysis processing with the mesh flow rate as a variable to a novel analysis graph in which the pressure deficient nodal points are connected with the reference nodal points by the virtual connection branch; and means for connecting with the reference nodal point by a novel virtual connection branch as the pressure deficient nodal point when an effective water head is less than a threshold value.SELECTED DRAWING: Figure 2
【課題】流出量の圧力依存性を考慮し、管網解析をメッシュ流量法で実現する為の新規な手法を提供する。【解決手段】管路枝と、管路枝の両端に管路枝同士の節点又は管路枝と配水池Ｒ１，Ｒ２の接続点を示す水頭既知節点を配置した解析グラフと、節点の水頭及び節点又は管路流出量を圧力依存量として算出する管網解析装置であり、解析グラフの全節点を結びループ非構成の枝集合の木及びメッシュ群決定手段と、木枝固定流量とメッシュ流量で非圧力依存管網解析処理を行う各節点有効水頭算出手段と、圧力不足節点を仮想接続枝で基準節点と接続する手段と、圧力不足節点の流出量を配水管網の圧力依存量を更新し、圧力不足節点が仮想接続枝で基準節点と接続された新解析グラフに対し、新メッシュ流量を変数とし、圧力依存管網解析処理を行う各節点有効水頭算出手段と、有効水頭が閾値未満の場合圧力不足節点として、新仮想接続枝で基準節点との接続手段とを備える。【選択図】図２
PIPE NETWORK ANALYSIS DEVICE, PIPE NETWORK ANALYSIS METHOD, AND PIPE NETWORK ANALYSIS PROGRAM
To provide a novel method for realizing a pipe network analysis in a mesh flow rate method under consideration of pressure dependency of an outflow rate.SOLUTION: A pipe network analysis device calculates, to an analysis graph in which pipeline branches, and nodal points of each pipeline branch or water head known nodal points exhibiting connection points of the pipeline branch and distribution basins R1, R2 at both ends of the pipeline branch, water head in the nodal point and an outflow rate from the nodal point or a pipeline as a pressure dependent amount. The pipe network analysis device comprises: wood and mesh group determination means which connects all of the nodal points in the analysis graph ans which is a branch aggregate not constituting a loop; each nodal point effective water head calculation means performing non-pressure dependent pipe network analysis processing using a wood branch fixed flow rate and a mesh flow rate; means for connecting pressure deficient nodal points with reference nodal points by virtual connection branches; each nodal point effective water head calculation means which updates an outflow rate in the pressure deficient nodal points as a pressure dependent amount of a distribution pipe network and which performs pressure dependent pipe network analysis processing with the mesh flow rate as a variable to a novel analysis graph in which the pressure deficient nodal points are connected with the reference nodal points by the virtual connection branch; and means for connecting with the reference nodal point by a novel virtual connection branch as the pressure deficient nodal point when an effective water head is less than a threshold value.SELECTED DRAWING: Figure 2
【課題】流出量の圧力依存性を考慮し、管網解析をメッシュ流量法で実現する為の新規な手法を提供する。【解決手段】管路枝と、管路枝の両端に管路枝同士の節点又は管路枝と配水池Ｒ１，Ｒ２の接続点を示す水頭既知節点を配置した解析グラフと、節点の水頭及び節点又は管路流出量を圧力依存量として算出する管網解析装置であり、解析グラフの全節点を結びループ非構成の枝集合の木及びメッシュ群決定手段と、木枝固定流量とメッシュ流量で非圧力依存管網解析処理を行う各節点有効水頭算出手段と、圧力不足節点を仮想接続枝で基準節点と接続する手段と、圧力不足節点の流出量を配水管網の圧力依存量を更新し、圧力不足節点が仮想接続枝で基準節点と接続された新解析グラフに対し、新メッシュ流量を変数とし、圧力依存管網解析処理を行う各節点有効水頭算出手段と、有効水頭が閾値未満の場合圧力不足節点として、新仮想接続枝で基準節点との接続手段とを備える。【選択図】図２
PIPE NETWORK ANALYSIS DEVICE, PIPE NETWORK ANALYSIS METHOD, AND PIPE NETWORK ANALYSIS PROGRAM
管網解析装置、管網解析方法及び、管網解析プログラム
UDO AKIHIKO (author)
2021-07-26
Patent
Electronic Resource
Japanese
IPC:
E03B
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