Campus Units

Aerospace Engineering

Document Type

Conference Proceeding

Conference

ASME Turbo Expo 2014: Turbine Technical Conference and Exposition

Publication Version

Published Version

Publication Date

2014

Journal or Book Title

Oil and Gas Applications; Organic Rankine Cycle Power Systems; Supercritical CO2 Power Cycles; Wind Energy

Volume

3B

DOI

10.1115/GT2014-25307

Conference Date

2014

City

Düsseldorf, Germany

Abstract

A systematic analysis of a single-rotor horizontal axis wind turbine aerodynamics is performed to obtain a realistic potential maximum efficiency. It is noted that by including the effects of swirl, viscosity and finite number of blades, the maximum aerodynamic efficiency of a HAWT is within a few percentage points of the efficiency of commercially-available turbines. The need for investigating windfarm (as a unit) aerodynamics is thus highlighted.

An actuator disk model is developed and implemented in the OpenFOAM software suite. The model is validated against 1-D momentum theory, blade element momentum theory, as well as against experimental data. The validated actuator disk model is then used to investigate an interesting microscale meteorological phenomenon called “flow convergence” caused by an array of wind turbines. This phenomenon is believed to be caused by the drop of pressure in wind farms. Wind farm numerical simulations are conducted with various approximations to investigate and explain the flow convergence phenomenon.

Comments

This proceeding is published as S. Selvaraj and A. Sharma, "On Predicting the Phenomenon of Surface Flow Convergence in Wind Farms," ASME Turbo Expo 2014: Turbine Technical Conference and Exposition, Volume 3B: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Supercritical CO2 Power Cycles; Wind Energy, Düsseldorf, Germany, June 16–20, 2014. doi: 10.1115/GT2014-25307. Posted with permission.

Copyright Owner

ASME

Language

en

File Format

application/pdf

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