Erratum for “Head-Drop Method for the Modeling of Pressure Reducing Valves and Variable Speed Pumps in Water Distribution Networks”

Creaco, Enrico; Di Nardo, Armando; Iervolino, Michele; Santonastaso, Giovanni

doi:10.1061/JHEND8.HYENG-13927

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Nov 24, 2023

Erratum for “Head-Drop Method for the Modeling of Pressure Reducing Valves and Variable Speed Pumps in Water Distribution Networks”

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Authors: Enrico Creaco https://orcid.org/0000-0003-4422-2417 [email protected], Armando Di Nardo [email protected], Michele Iervolino [email protected], and Giovanni Santonastaso [email protected]Author Affiliations

Publication: Journal of Hydraulic Engineering

Volume 150, Issue 2

https://doi.org/10.1061/JHEND8.HYENG-13927

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The following corrections should be made to “Head-Drop Method for the Modeling of Pressure Reducing Valves and Variable Speed Pumps in Water Distribution Networks” by Enrico Creaco, Armando Di Nardo, Michele Iervolino, and Giovanni Santonastaso, https://doi.org/10.1061/JHEND8.HYENG-13279.

Errors appeared in Tables 1 and 2 of the published paper, but the correct values were considered in the calculations. Tables 1 and 2 with the correct values are provided herein.

Table 1. PRV status and head drop

Δ

ID	Check condition	Valve status	$Δ^{k}$ value
1	$Q^{k} < 0$	Closed	0
2	( $Q^{k} = 0$ because of pipe previously removed) and ( $H_{d}^{k} > H_{set}$ )	Closed	0
3	(Conditions 1 and 2 are false) and ( $H_{u}^{k} - head loss < H_{set}$ )	Open	$Δ_{open}$
4	(Conditions 1 and 2 are false) and ( $H_{u}^{k} - head loss \geq H_{set}$ )	Active	$H_{u}^{k} - H_{set} - head loss$
4		Active	$Δ \geq Δ_{open}$

Note: $Δ_{open}$ is the head loss associated with fully open PRV, set to 0 in the presented applications to facilitate the comparison with other works in the scientific literature.

Table 2. VSP status and head drop

Δ

ID	Check condition	Valve status	$Δ^{k}$ value (m)
1	$Q^{k} < 0$	Closed	0
2	( $Q^{k} = 0$ because of pipe previously removed) and ( $H_{d}^{k} > H_{set}$ )	Closed	0
3	(Conditions 1 and 2 are false) and ( $H_{u}^{k} - head loss > H_{set}$ )	Open	$Δ_{\max}$
4	(Conditions 1 and 2 are false) and ( $H_{u}^{k} - head loss \leq H_{set}$ )	Active	$H_{u}^{k} - H_{set} - head loss$
4		Active	$Δ_{\min} \leq Δ \leq Δ_{\max}$

To preserve the published version of record, these details have been corrected only in this erratum.

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Journal of Hydraulic Engineering

Volume 150 • Issue 2 • March 2024

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Received: Sep 22, 2023

Accepted: Oct 5, 2023

Published online: Nov 24, 2023

Published in print: Mar 1, 2024

Discussion open until: Apr 24, 2024

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Enrico Creaco https://orcid.org/0000-0003-4422-2417 [email protected]

Full Professor, Dipartimento di Ingegneria Civile ed Architettura, Università degli Studi di Pavia, Via Ferrata 3, Pavia 27100, Italy; Co-founder, Med.Hydro srl Academic Spinoff, Università degli Studi della Campania Luigi Vanvitelli, via Roma 29, Aversa (CE) 81031, Italy (corresponding author). ORCID: https://orcid.org/0000-0003-4422-2417. Email: [email protected]; [email protected]

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Armando Di Nardo [email protected]

Associate Professor, Dipartimento di Ingegneria, Università degli Studi della Campania Luigi Vanvitelli, via Roma 29, Aversa (CE) 81031, Italy; Co-founder, Med.Hydro srl Academic Spinoff, Università degli Studi della Campania Luigi Vanvitelli, via Roma 29, Aversa (CE) 81031, Italy. Email: [email protected]; [email protected]

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Michele Iervolino [email protected]

Associate Professor, Dipartimento di Ingegneria, Università degli Studi della Campania Luigi Vanvitelli, via Roma 29, Aversa (CE) 81031, Italy; Co-founder, Med.Hydro srl Academic Spinoff, Università degli Studi della Campania Luigi Vanvitelli, via Roma, Aversa (CE) 81031, Italy. Email: [email protected]; [email protected]

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Giovanni Santonastaso [email protected]

Associate Professor, Dipartimento di Ingegneria, Università degli Studi della Campania Luigi Vanvitelli, via Roma 29, Aversa (CE) 81031, Italy; Co-founder, Med.Hydro srl Academic Spinoff, Università degli Studi della Campania Luigi Vanvitelli, via Roma, Aversa (CE) 81031, Italy. Email: [email protected]; [email protected]

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