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首頁(yè)> 外文期刊>Journal of Water Resources Planning and Management >Unsteady Flow Modeling of Pressure Real-Time Control in Water Distribution Networks
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Unsteady Flow Modeling of Pressure Real-Time Control in Water Distribution Networks

機(jī)譯：供水管網(wǎng)壓力實(shí)時(shí)控制的非定常流模型

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This paper investigates the potential of unsteady flow modelling for the simulation of remote real-time control (RTC) of pressure in water distribution networks. The developed model combines the unsteady flow simulation solver with specific modules for generation of pulsed nodal demands and dynamic adjustment of pressure control valves in the network. The application to the skeletonized model of a real network highlights the improved capability of the unsteady flow simulation of RTC compared with the typical extended period simulation (EPS) models. The results show that the unsteady flow model provides sounder description of the amplitude of the pressure head variations at the controlled node. Furthermore, it enables identification of the suitable control time step to be adopted for obtaining a prompt and effective regulation. Nevertheless, EPS-based models allow consistent estimates of leakage reduction as well as proper indications for valve setting under network pressure RTC at a much smaller computational cost. (C) 2017 American Society of Civil Engineers.
機(jī)譯：本文研究了非恒定流模型在配水管網(wǎng)壓力遠(yuǎn)程實(shí)時(shí)控制（RTC）模擬中的潛力。所開(kāi)發(fā)的模型將非穩(wěn)態(tài)流動(dòng)模擬求解器與特定模塊結(jié)合在一起，以生成脈沖節(jié)點(diǎn)需求并動(dòng)態(tài)調(diào)整網(wǎng)絡(luò)中的壓力控制閥。實(shí)際網(wǎng)絡(luò)的骨架化模型的應(yīng)用突出了與典型的擴(kuò)展周期模擬（EPS）模型相比，RTC的非穩(wěn)態(tài)流動(dòng)模擬的改進(jìn)功能。結(jié)果表明，非恒定流模型提供了對(duì)受控節(jié)點(diǎn)壓頭變化幅度的更合理的描述。此外，它使得能夠識(shí)別適當(dāng)?shù)目刂茣r(shí)間步長(zhǎng)，以便獲得迅速而有效的調(diào)節(jié)。盡管如此，基于EPS的模型仍可以以較小的計(jì)算成本對(duì)泄漏減少量進(jìn)行一致的估算，并可以在網(wǎng)絡(luò)壓力RTC下對(duì)閥門(mén)設(shè)置進(jìn)行正確指示。 （C）2017年美國(guó)土木工程師學(xué)會(huì)。

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