Performance Characterization of a Cross-Flow Hydrokinetic Turbine in Sheared Inflow

Levi Kilcher; Dominic Forbush; Brian Polagye; Jim Thomson; James Donegan; Jarlath McEntee

doi:10.1016/j.ijome.2016.06.001

Performance Characterization of a Cross-Flow Hydrokinetic Turbine in Sheared Inflow

Levi Kilcher, Dominic Forbush, Brian Polagye, Jim Thomson, James Donegan, Jarlath McEntee

National Wind Technology Center

Research output: Contribution to journal › Article › peer-review

12 Scopus Citations

Abstract

A method for constructing a non-dimensional performance curve for a cross-flow hydrokinetic turbine in sheared flow is developed for a natural river site. The river flow characteristics are quasi-steady, with negligible vertical shear, persistent lateral shear, and synoptic changes dominated by long time scales (days to weeks). Performance curves developed from inflow velocities measured at individual points (randomly sampled) yield inconclusive turbine performance characteristics because of the spatial variation in mean flow. Performance curves using temporally- and spatially-averaged inflow velocities are more conclusive. The implications of sheared inflow are considered in terms of resource assessment and turbine control.

Original language	American English
Pages (from-to)	150-161
Number of pages	12
Journal	International Journal of Marine Energy
Volume	16
DOIs	https://doi.org/10.1016/j.ijome.2016.06.001 https://doi.org/10.1016/j.ijome.2016.06.001
State	Published - 1 Dec 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.

NREL Publication Number

NREL/JA-5000-66803

Keywords

Cross-flow turbines
Performance characterization
Resource assessment
Sheared inflow
Turbulence

Access to Document

Cite this

@article{868b107caf23406d94775c18824625b3,

title = "Performance Characterization of a Cross-Flow Hydrokinetic Turbine in Sheared Inflow",

abstract = "A method for constructing a non-dimensional performance curve for a cross-flow hydrokinetic turbine in sheared flow is developed for a natural river site. The river flow characteristics are quasi-steady, with negligible vertical shear, persistent lateral shear, and synoptic changes dominated by long time scales (days to weeks). Performance curves developed from inflow velocities measured at individual points (randomly sampled) yield inconclusive turbine performance characteristics because of the spatial variation in mean flow. Performance curves using temporally- and spatially-averaged inflow velocities are more conclusive. The implications of sheared inflow are considered in terms of resource assessment and turbine control.",

keywords = "Cross-flow turbines, Performance characterization, Resource assessment, Sheared inflow, Turbulence",

author = "Levi Kilcher and Dominic Forbush and Brian Polagye and Jim Thomson and James Donegan and Jarlath McEntee",

year = "2016",

month = dec,

day = "1",

doi = "10.1016/j.ijome.2016.06.001",

language = "American English",

volume = "16",

pages = "150--161",

journal = "International Journal of Marine Energy",

issn = "2214-1669",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Performance Characterization of a Cross-Flow Hydrokinetic Turbine in Sheared Inflow

AU - Kilcher, Levi

AU - Forbush, Dominic

AU - Polagye, Brian

AU - Thomson, Jim

AU - Donegan, James

AU - McEntee, Jarlath

PY - 2016/12/1

Y1 - 2016/12/1

N2 - A method for constructing a non-dimensional performance curve for a cross-flow hydrokinetic turbine in sheared flow is developed for a natural river site. The river flow characteristics are quasi-steady, with negligible vertical shear, persistent lateral shear, and synoptic changes dominated by long time scales (days to weeks). Performance curves developed from inflow velocities measured at individual points (randomly sampled) yield inconclusive turbine performance characteristics because of the spatial variation in mean flow. Performance curves using temporally- and spatially-averaged inflow velocities are more conclusive. The implications of sheared inflow are considered in terms of resource assessment and turbine control.

AB - A method for constructing a non-dimensional performance curve for a cross-flow hydrokinetic turbine in sheared flow is developed for a natural river site. The river flow characteristics are quasi-steady, with negligible vertical shear, persistent lateral shear, and synoptic changes dominated by long time scales (days to weeks). Performance curves developed from inflow velocities measured at individual points (randomly sampled) yield inconclusive turbine performance characteristics because of the spatial variation in mean flow. Performance curves using temporally- and spatially-averaged inflow velocities are more conclusive. The implications of sheared inflow are considered in terms of resource assessment and turbine control.

KW - Cross-flow turbines

KW - Performance characterization

KW - Resource assessment

KW - Sheared inflow

KW - Turbulence

UR - http://www.scopus.com/inward/record.url?scp=84976263007&partnerID=8YFLogxK

U2 - 10.1016/j.ijome.2016.06.001

DO - 10.1016/j.ijome.2016.06.001

M3 - Article

AN - SCOPUS:84976263007

SN - 2214-1669

VL - 16

SP - 150

EP - 161

JO - International Journal of Marine Energy

JF - International Journal of Marine Energy

ER -

Performance Characterization of a Cross-Flow Hydrokinetic Turbine in Sheared Inflow

Abstract

Bibliographical note

NREL Publication Number

Keywords

Access to Document

Other files and links

Fingerprint

Cite this