Effect of Flap Deflection on Section Characteristics of S813 Airfoil; Period of Performance: 1993--1994

Effect of Flap Deflection on Section Characteristics of S813 Airfoil; Period of Performance: 1993--1994

National Wind Technology Center

Research output: NREL › Subcontract Report

Abstract

The effect of small deflections of a 30% chord, simple flap on the section characteristics of a tip airfoil, the S813, designed for 20- to 30-meter, stall-regulated, horizontal-axis wind turbines has been evaluated theoretically. The decrease in maximum lift coefficient due to leading-edge roughness increases in magnitude with increasing, positive flap deflection and with decreasing Reynoldsnumber.

Original language	American English
Number of pages	89
State	Published - 2005

Bibliographical note

Work performed by Airfoils, Inc., State College, Pennsylvania

NREL Publication Number

NREL/SR-500-36335

Keywords

airfoil design
airfoils
horizontal-axis wind turbines (HAWT)
Pennsylvania State University
wind energy

Access to Document

https://www.nrel.gov/docs/fy05osti/36335.pdf

Cite this

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title = "Effect of Flap Deflection on Section Characteristics of S813 Airfoil; Period of Performance: 1993--1994",

abstract = "The effect of small deflections of a 30% chord, simple flap on the section characteristics of a tip airfoil, the S813, designed for 20- to 30-meter, stall-regulated, horizontal-axis wind turbines has been evaluated theoretically. The decrease in maximum lift coefficient due to leading-edge roughness increases in magnitude with increasing, positive flap deflection and with decreasing Reynoldsnumber.",

keywords = "airfoil design, airfoils, horizontal-axis wind turbines (HAWT), Pennsylvania State University, wind energy",

author = "NREL",

note = "Work performed by Airfoils, Inc., State College, Pennsylvania",

year = "2005",

language = "American English",

type = "Other",

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TY - GEN

T1 - Effect of Flap Deflection on Section Characteristics of S813 Airfoil; Period of Performance: 1993--1994

AU - NREL, null

N1 - Work performed by Airfoils, Inc., State College, Pennsylvania

PY - 2005

Y1 - 2005

N2 - The effect of small deflections of a 30% chord, simple flap on the section characteristics of a tip airfoil, the S813, designed for 20- to 30-meter, stall-regulated, horizontal-axis wind turbines has been evaluated theoretically. The decrease in maximum lift coefficient due to leading-edge roughness increases in magnitude with increasing, positive flap deflection and with decreasing Reynoldsnumber.

AB - The effect of small deflections of a 30% chord, simple flap on the section characteristics of a tip airfoil, the S813, designed for 20- to 30-meter, stall-regulated, horizontal-axis wind turbines has been evaluated theoretically. The decrease in maximum lift coefficient due to leading-edge roughness increases in magnitude with increasing, positive flap deflection and with decreasing Reynoldsnumber.

KW - airfoil design

KW - airfoils

KW - horizontal-axis wind turbines (HAWT)

KW - Pennsylvania State University

KW - wind energy

M3 - Subcontract Report

ER -

Effect of Flap Deflection on Section Characteristics of S813 Airfoil; Period of Performance: 1993--1994

Abstract

Bibliographical note

NREL Publication Number

Keywords

Access to Document

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Cite this