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13 results on '"flow conveyance"'

1. Large Format Composite Additive Manufacturing for Low-Head Hydropower

Author

Alex Roschli, Brian Post, Randal Mueller, Vito Gervasi, Phillip Chesser, Jesse Heineman, and Rebecca Brink

Subjects
3d printed dam, hydropower composite tooling, flow conveyance, 3d printed renewable energy, electric power generation, Industrial engineering. Management engineering, T55.4-60.8
Abstract

ABSTRACT: Hydropower with a small elevation change from inlet to outlet, known as “low-head” hydropower, is a relatively untapped resource for reliable green power generation. One major barrier to entry is the cost of the components needed to generate the power. Each installation site is unique, with various head levels, flow rates, and other unique site characteristics that drive up the cost of development and installation. As a result, custom-made components are necessary because the sites are intrinsically inefficient. However, customized parts are generally more expensive to manufacture than ready-made parts. Often times, the cost of custom-made components is so high that the low-head hydropower installation becomes non-viable. Additive manufacturing offers the ability to make custom components, ideal for one-off applications, at low costs that are well suited for the needs of low-head hydropower. Indirect additive manufacturing, such as making tools or dies rather than end use components, can also be used to make low-cost composite tooling as needed for these custom applications. This paper explores the use of additive manufacturing, both directly and indirectly, to produce the components of a turbine system for a low-head hydropower site. The parts were designed to form a unique modular system, which saves time for future designs and iterations. The system has operated for more than three years without failure at a test site in Wisconsin, USA. This work serves as a basis for future application of AM to low-head systems, in which the modular components can be customized for each unique hydropower installation.

Published
2023
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2. Modelling Hydraulic Parameters of Flood Flows for a Polish Carpathian River Subjected to Variable Human Impacts

Author

Radecki-Pawlik, Artur, Wyżga, Bartłomiej, Czech, Wiktoria, Mikuś, Paweł, Zawiejska, Joanna, Ruiz-Villanueva, Virginia, Rowinski, Pawel, Editor-in-chief, Banaszkiewicz, Marek, Series editor, Pempkowiak, Janusz, Series editor, Lewandowski, Marek, Series editor, Sarna, Marek, Series editor, Kundzewicz, Zbigniew W., editor, Stoffel, Markus, editor, Niedźwiedź, Tadeusz, editor, and Wyżga, Bartłomiej, editor

Published
2016
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3. A new method to estimate flow conveyance in a compound channel with vegetated floodplains based on energy balance.

Author

Yang, Zhonghua, Li, Da, Huai, Wenxin, and Liu, Jianhua

Subjects
*DRAG force, *FLOODPLAINS, *HYDRAULICS, *FORCE & energy, *RIVER channels
Abstract

• By introducing vegetation drag force inside the water body, a new method is proposed to estimate flow conveyance in compound channel with vegetated floodplains based on energy balance. • The energy loss caused by vegetation is derived and the relation between energy and discharge in a compound channel with vegetated floodplains is developed. • Compared to equivalent Manning's roughness coefficient, vegetation drag force can reflect the actual situation which is vegetation additional resistance is both on the river bed and the entire water body. Precise estimation of flow conveyance in a two-stage open channel with vegetated floodplains is a key prerequisite to the management of the river ecosystem and the creation of flood retention space. The presence of vegetation alters the structure of water flow and affects the discharge in a two-stage channel. Nevertheless, the effect of vegetation on flow conveyance is not studied separately in the previous flow discharge research. By conducting force analysis in a control volume with considering the vegetation drag force and quantifying the energy loss caused by vegetation blocking effect and the transverse velocity gradient, this paper proposes a new method to estimate flow conveyance in compound channel covered with vegetation based on the relationship which is the total energy loss is balanced by the total energy supplied by the local flow. Experimental data series are collected to verify the new method by comparing the measured and estimated discharges and it presents a good accuracy with 2.47% relative error. The new method is also compared with the other methods, which quantify the additional resistance of vegetation by using the equivalent Manning's roughness coefficient. The results indicate that both the vegetation drag force and the equivalent Manning's roughness coefficient can be used in flow conveyance estimation and dominantly influence the accuracy of the predictive method so that they need to be properly quantified and calibrated. And adopting the vegetation drag force is suggested here for the simplicity of calculation. [ABSTRACT FROM AUTHOR]

Published
2019
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4. Dredged Material Management Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs. Appendix D. Upland Disposal Conceptual Design

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074) The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2- Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., PR-010180. Prepared in cooperation with the U.S. Environmental Protection Agency, Region 10, Seattle, WA. See Also ADA412806 ADA412807 ADA412808 ADA412809 ADA412810 ADA412811.

Published
2002

5. Dredged Material Management Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs. Appendix I. Section 404(b)(1) Evaluation

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074) The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2- Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., PR-010180. Prepared in cooperation with the U.S. Environmental Protection Agency, Region 10, Seattle, WA. See Also ADA412805 ADA412806 ADA412808 ADA412809 ADA412810 ADA412811.

Published
2002

6. Dredged Material Management Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs. Appendix J. Dredged Material Evaluation Framework

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074) The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2- Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., PR-010180. Prepared in cooperation with the U.S. Environmental Protection Agency, Region 10, Seattle, WA. See Also ADA412805 ADA412807 ADA412808 ADA412809 ADA412810 ADA412811.

Published
2002

7. Dredged Material Management Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs. Appendix H. Water and Sediment Quality

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074) The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2- Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., PR-010180. Prepared in cooperation with the U.S. Environmental Protection Agency, Region 10, Seattle, WA. See Also ADA412805 ADA412806 ADA412807 ADA412809 ADA412810 ADA412811.

Published
2002

8. Dredged Material Management Plan and Environmental Impact Statement. McNary Reservoir and Lower Snake River Reservoirs. Appendix C: Economic Analysis

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Enviornmental Impact Statement (DMMP/EIS) presents the Corps of Engineers' programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for managment of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074). The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: ALternative 1 = No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2 - Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot Levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., The original document contains color images. All DTIC reproductions will be in black and white.

Published
2002

9. Dredged Material Management Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs. Appendix E. Levee Modification/Extension Analysis

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074) The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2- Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., PR-010180. Prepared in cooperation with the U.S. Environmental Protection Agency, Region 10, Seattle, WA. See Also ADA412805 ADA412806 ADA412807 ADA412808 ADA412809 ADA412810.

Published
2002

10. Dredged Material Management Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs. Appendix G. Endangered Species Act Consultation for Anadromous Fish Species

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074) The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2- Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., PR-010180. Prepared in cooperation with the U.S. Environmental Protection Agency, Region 10, Seattle, WA. See Also ADA412805 ADA412806 ADA412807 ADA412808 ADA412809 ADA412811.

Published
2002

11. Dredged Material Management Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs. Appendix G. Endangered Species Act Consultation for Non-Anadromous Fish and Terrestial Species

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074) The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2- Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use of Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative)., PR-010180. Prepared in cooperation with the U.S. Environmental Protection Agency, Region 10, Seattle, WA. See Also ADA412805 ADA412806 ADA412807 ADA412808 ADA412810 ADA412811.

Published
2002

12. Dredged Material Managment Plan and Environmental Impact Statement: McNary Reservoir and Lower Snake River Reservoirs Executive Summary (CD-ROM)

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

ELECTRONIC FILE CHARACTERISTICS: 177 files; Adobe Acrobat (.PDF). PHYSICAL DESCRIPTION: 1 computer laser optical disc (CD-ROM); 4 3/4 in.; 280 MB. SYSTEMS DETAIL NOTE: IBM-clone PC-compatible; Adobe Acrobat Reader is included on disc. ABSTRACT: This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers' programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the Lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and-McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the dam and reservoir project (to year 2074). The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2 - Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot Levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use 0 Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative., Prepared in cooperation with U. S. EPA, Region 10, Seattle, WA.

Published
2002

13. Dredged Material Management Plan and Environmental Impact Statement. McNary Reservoir and Lower Snake River Reservoirs. Appendix O: Responses to Comments on Draft DMMP/EIS

Author

CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT and CORPS OF ENGINEERS WALLA WALLA WA WALLA WALLA DISTRICT

Abstract

This final Dredged Material Management Plan/Environmental Impact Statement (DMMP/EIS) presents the Corps of Engineers' programmatic plan for maintenance of the authorized navigation channel and certain publicly owned facilities in the lower Snake River reservoirs between Lewiston, Idaho and the Columbia River, and McNary reservoir on the Columbia River for 20 years; for management of dredged material from these reservoirs; and for maintenance of flow conveyance capacity at the most upstream extent of the Lower Granite reservoir for the remaining economic life of the darn and reservoir project (to year 2074). The Corps, along with the U.S. Environmental Protection Agency, analyzed four alternatives for this Final DMMP/EIS: Alternative 1 - No Action (No Change) - Maintenance Dredging With In-Water Disposal; Alternative 2 - Maintenance Dredging With In-Water Disposal to Create Fish Habitat and a 3-Foot Levee Raise; Alternative 3 - Maintenance Dredging With Upland Disposal and a 3-Foot Levee Raise; and Alternative 4 - Maintenance Dredging With Beneficial Use 0 Dredged Material and a 3-Foot Levee Raise (Recommended Plan/Preferred Alternative).

Published
2002

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