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Title: Pumped spoiling experimental program

Abstract

This report documents a series of wind tunnel tests on a sample airfoil designed to evaluate and quantify the ''pumped spoiling'' concept. The test airfoil was a Sandia National Laboratories natural laminar flow section designated SAND-1850. All tests were operated at a Reynolds Number of 1.5 million with a model having a 1-ft chord and a 9-ft span. The spoiling perforations consisted of 1.6 mm diameter holes on 6.35 mm centers. The pressure in the internal plenum that supplied the spoiling air to the perforations was maintained at the tunnel dynamic head. Test results were consistent and repeatable. Up to an angle of attack of 6/sup 0/, there was very little difference in the lift coefficient among the many test arrangements studied. Past 8/sup 0/, however, the lift coefficient trends were very sensitive to the test configuration of the model. The report includes the test results for 32 combinations of the spoiling arrangements ranging from ''clean'' baseline airfoil to spoiling flow through all perforations. In addition to the section coefficients, the report presents model force data and section pressure profiles. 29 figs., 4 tabs.

Authors:
Publication Date:
Research Org.:
Kinetics Group, Inc., Mercer Island, WA (USA); Sandia National Labs., Albuquerque, NM (USA)
OSTI Identifier:
5986438
Report Number(s):
SAND-87-7011
ON: DE88000264
DOE Contract Number:
AC04-76DP00789
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; AIRFOILS; PERFORMANCE TESTING; VERTICAL AXIS TURBINES; CONTROL SYSTEMS; EXPERIMENTAL DATA; WIND TUNNELS; DATA; INFORMATION; MACHINERY; NUMERICAL DATA; TESTING; TUNNELS; TURBINES; TURBOMACHINERY; UNDERGROUND FACILITIES; WIND TURBINES; 170602* - Wind Energy Engineering- Turbine Design & Operation

Citation Formats

Sladky, J. Jr. Pumped spoiling experimental program. United States: N. p., 1987. Web.
Sladky, J. Jr. Pumped spoiling experimental program. United States.
Sladky, J. Jr. 1987. "Pumped spoiling experimental program". United States. doi:.
@article{osti_5986438,
title = {Pumped spoiling experimental program},
author = {Sladky, J. Jr.},
abstractNote = {This report documents a series of wind tunnel tests on a sample airfoil designed to evaluate and quantify the ''pumped spoiling'' concept. The test airfoil was a Sandia National Laboratories natural laminar flow section designated SAND-1850. All tests were operated at a Reynolds Number of 1.5 million with a model having a 1-ft chord and a 9-ft span. The spoiling perforations consisted of 1.6 mm diameter holes on 6.35 mm centers. The pressure in the internal plenum that supplied the spoiling air to the perforations was maintained at the tunnel dynamic head. Test results were consistent and repeatable. Up to an angle of attack of 6/sup 0/, there was very little difference in the lift coefficient among the many test arrangements studied. Past 8/sup 0/, however, the lift coefficient trends were very sensitive to the test configuration of the model. The report includes the test results for 32 combinations of the spoiling arrangements ranging from ''clean'' baseline airfoil to spoiling flow through all perforations. In addition to the section coefficients, the report presents model force data and section pressure profiles. 29 figs., 4 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1987,
month = 8
}

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