A numerical study of pumping effects on flow velocity distributions in Mosul Dam reservoir using the HEC‐RAS model
Research and Management
Document identifier: oai:DiVA.org:ltu-77542
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10.1111/lre.12306Keyword: Engineering and Technology,
Civil Engineering,
Geotechnical Engineering,
Teknik och teknologier,
Samhällsbyggnadsteknik,
Geoteknik,
Pumping station,
Sediment concentration,
Stream power,
Velocity distribution,
Soil MechanicsPublication year: 2020Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: Water flow direction and velocity affect and controls erosion, transport and deposi- tion of sediment in rivers, reservoirs and different hydraulic structures. One of the main structures affected is pumping stations within the dams wherein the velocity distribution near the station intake is disturbed. The two-dimensional (2-D) HEC-RAS 5.01 model was utilized to study, analyse and evaluate the effects of pumping rates and flow depth on the flow velocity distribution, flow stream power and their effects in the Mosul Dam reservoir. The pumping station was considered as a case study. The station is suffering from sediment accumulation around, and in, its intake and suction pipes. The main inflow sources to the reservoir are the Tigris River and run-off from the valleys within its basin. The reservoir was divided into two parts for the present study, including the upper part near the pumping station (analysed as a two-dimen- sional zone), while the lower part was analysed as a one-dimensional flow to reduce the simulation period computation time (1986–2011). Different operation plans (i.e. pumping rate and water depth) were considered. The results of the depth-averaged velocity model indicated that when the pumping station was working at a range from the designed full capacity (100% to 25% of its full capacity), the maximum flow ve- locity increased from 75 to 4 times the normal velocity when there is no pumping dependent on pumping rate and flow depth. For the same operation plans, the flow stream power varied from around zero values to 400 times at full pumping capacity and low flow depth. For sediment routing along the reservoir, the considered statisti- cal criteria indicated the model performance in estimating the total sediment load deposition and invert bed level is much better than in the case of erosion and deposition areas for different considered bed sections of the reservoir.
Authors
Mohammad E. Mohammad
Luleå tekniska universitet; Geoteknologi
Other publications
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Nadhir Al-Ansari
Luleå tekniska universitet; Geoteknologi
Other publications
>>
Sven Knutsson
Luleå tekniska universitet; Geoteknologi
Other publications
>>
Jan Laue
Luleå tekniska universitet; Geoteknologi
Other publications
>>
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header:
identifier: oai:DiVA.org:ltu-77542
datestamp: 2021-04-19T12:41:45Z
setSpec: SwePub-ltu
metadata:
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version: 3.7
recordInfo:
recordContentSource: ltu
recordCreationDate: 2020-01-29
identifier:
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-77542
10.1111/lre.12306
2-s2.0-85078717071
titleInfo:
@attributes:
lang: eng
title: A numerical study of pumping effects on flow velocity distributions in Mosul Dam reservoir using the HEC‐RAS model
abstract: Water flow direction and velocity affect and controls erosion transport and deposi- tion of sediment in rivers reservoirs and different hydraulic structures. One of the main structures affected is pumping stations within the dams wherein the velocity distribution near the station intake is disturbed. The two-dimensional (2-D) HEC-RAS 5.01 model was utilized to study analyse and evaluate the effects of pumping rates and flow depth on the flow velocity distribution flow stream power and their effects in the Mosul Dam reservoir. The pumping station was considered as a case study. The station is suffering from sediment accumulation around and in its intake and suction pipes. The main inflow sources to the reservoir are the Tigris River and run-off from the valleys within its basin. The reservoir was divided into two parts for the present study including the upper part near the pumping station (analysed as a two-dimen- sional zone) while the lower part was analysed as a one-dimensional flow to reduce the simulation period computation time (1986–2011). Different operation plans (i.e. pumping rate and water depth) were considered. The results of the depth-averaged velocity model indicated that when the pumping station was working at a range from the designed full capacity (100% to 25% of its full capacity) the maximum flow ve- locity increased from 75 to 4 times the normal velocity when there is no pumping dependent on pumping rate and flow depth. For the same operation plans the flow stream power varied from around zero values to 400 times at full pumping capacity and low flow depth. For sediment routing along the reservoir the considered statisti- cal criteria indicated the model performance in estimating the total sediment load deposition and invert bed level is much better than in the case of erosion and deposition areas for different considered bed sections of the reservoir.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Civil Engineering
Geotechnical Engineering
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Samhällsbyggnadsteknik
Geoteknik
@attributes:
lang: eng
topic: pumping station
@attributes:
lang: eng
topic: sediment concentration
@attributes:
lang: eng
topic: stream power
@attributes:
lang: eng
topic: velocity distribution
@attributes:
lang: swe
authority: ltu
topic: Geoteknik
genre: Research subject
@attributes:
lang: eng
authority: ltu
topic: Soil Mechanics
genre: Research subject
language:
languageTerm: eng
genre:
publication/journal-article
ref
note:
Published
4
Validerad;2020;Nivå 1;2020-03-30 (alebob)
name:
@attributes:
type: personal
authority: ltu
namePart:
Mohammad
Mohammad E.
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Geoteknologi
nameIdentifier:
mohezz
0000-0001-6547-2410
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authority: ltu
namePart:
Al-Ansari
Nadhir
1947-
role:
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affiliation:
Luleå tekniska universitet
Geoteknologi
nameIdentifier:
nadhir
0000-0002-6790-2653
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authority: ltu
namePart:
Knutsson
Sven
1948-
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Geoteknologi
nameIdentifier:
svek
0000-0002-1365-8552
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type: personal
authority: ltu
namePart:
Laue
Jan
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Geoteknologi
nameIdentifier:
janlau
0000-0003-1935-1743
originInfo:
dateIssued: 2020
publisher: John Wiley & Sons
place:
placeTerm: USA
relatedItem:
@attributes:
type: host
titleInfo:
title: Lakes & Reservoirs
subTitle: Research and Management
identifier:
1320-5331
1440-1770
part:
detail:
@attributes:
type: volume
number: 25
@attributes:
type: issue
number: 1
extent:
start: 72
end: 83
location:
url: http://ltu.diva-portal.org/smash/get/diva2:1389138/FULLTEXT01.pdf
accessCondition: gratis
physicalDescription:
form: electronic
typeOfResource: text