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Channel capacity under arranged demand irrigation

Channel capacity under arranged demand irrigation
Channel capacity under arranged demand irrigation
To date, arranged demand irrigation and on-demand irrigation were considered as two distinct types of systems. This paper presents the hypothesis that arranged demand is a continuous function with on-demand as one extreme and fully arranged demand as the other. This paper introduces the index of relative timeliness to capture this semantic. This index assumes a value of 1 for an on-demand system and 0 for a fully arranged demand system. This paper then demonstrates that how this index can be incorporated in mathematical modelling. An earlier integer programme is modified to include the concept of relative timeliness. As a case study an existing tertiary unit is simulated using this tool to investigate whether, given its current capacity, the tertiary unit can be operated on an arranged demand basis, and if so what level of service can be expected. The model a] so indicates what capacity is required if the tertiary unit were to be operated on an on-demand basis. The capacity requirements as predicted by the model developed in this work relate well to earlier empirical/ experience guidelines. The model developed is useful for investigating and simulating existing tertiary units, but in its current form cannot be used for general design guidelines for new designs. Some recommendations for further developments are made.
water allocation, optimization, integer programme, arranged demand irrigation
0378-3774
148-160
Anwar, Arif A.
e9a57bb7-5225-45e6-9a69-2396a6e4fd31
Clarke, Derek
9746f367-1df2-4e0e-8d71-5ecfc9ddd000
de Vries, Tonny T.
bade5b3c-2f5b-426a-9bc7-1c060b5a2509
Anwar, Arif A.
e9a57bb7-5225-45e6-9a69-2396a6e4fd31
Clarke, Derek
9746f367-1df2-4e0e-8d71-5ecfc9ddd000
de Vries, Tonny T.
bade5b3c-2f5b-426a-9bc7-1c060b5a2509

Anwar, Arif A., Clarke, Derek and de Vries, Tonny T. (2006) Channel capacity under arranged demand irrigation. Agricultural Water Management, 82 (1-2), 148-160. (doi:10.1016/j.agwat.2005.05.007).

Record type: Article

Abstract

To date, arranged demand irrigation and on-demand irrigation were considered as two distinct types of systems. This paper presents the hypothesis that arranged demand is a continuous function with on-demand as one extreme and fully arranged demand as the other. This paper introduces the index of relative timeliness to capture this semantic. This index assumes a value of 1 for an on-demand system and 0 for a fully arranged demand system. This paper then demonstrates that how this index can be incorporated in mathematical modelling. An earlier integer programme is modified to include the concept of relative timeliness. As a case study an existing tertiary unit is simulated using this tool to investigate whether, given its current capacity, the tertiary unit can be operated on an arranged demand basis, and if so what level of service can be expected. The model a] so indicates what capacity is required if the tertiary unit were to be operated on an on-demand basis. The capacity requirements as predicted by the model developed in this work relate well to earlier empirical/ experience guidelines. The model developed is useful for investigating and simulating existing tertiary units, but in its current form cannot be used for general design guidelines for new designs. Some recommendations for further developments are made.

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More information

Published date: 10 April 2006
Keywords: water allocation, optimization, integer programme, arranged demand irrigation

Identifiers

Local EPrints ID: 39448
URI: http://eprints.soton.ac.uk/id/eprint/39448
ISSN: 0378-3774
PURE UUID: be6e753f-1d19-46d7-8fa9-36ac661b53b5
ORCID for Arif A. Anwar: ORCID iD orcid.org/0000-0002-3071-3197
ORCID for Derek Clarke: ORCID iD orcid.org/0000-0002-5433-5258

Catalogue record

Date deposited: 28 Jun 2006
Last modified: 07 Aug 2019 00:55

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