Objective
THE AIM OF THE PROJECT IS THE DEVELOPMENT OF ADVANCED THEORETICAL TOOLS AND REVELANT COMPUTER CODES FOR THE ANALYSIS AND DESIGN OF HAWT ROTORS.
THE PROJECT COMBINES TWO INDIVIDUAL RESEARCH DIRECTIONS :
A) THE DEVELOPMENT OF A COMPLETE INVERSE CALCULATION PROCEDURE FOR THE OPTIMIZATION OF HAWT AIRFOIL SECTIONS. THIS PROCEDURE INVOLVES :
- AN INVERSE VISCOUS METHOD BASED ON AN INTEGRAL SHEAR LAYER CALCULATION PROCEDURE, WHICH PRODUCES OPTIMIZED BLADE-SUCTION AND PRESSURE SIDE VELOCITY DISTRIBUTIONS.
- AN INVERSE INVISCID METHOD WHICH SOLVES FOR THE BLADE COORDINATES WITH THE VELOCITY DATA PROVIDED BY THE PREVIOUS STEP.
B) THE DEVELOPMENT OF A FULLY THREE-DIMENSIONAL DIRECT POTENTIAL METHOD FOR THE HAWT ROTOR-PERFORMANCE PREDICTION. IT IS A FINITE-DIFFERENCE/FINITE VOLUME FULL POTENTIAL SOLVER, COMBINED WITH AN INTEGRAL TYPE WAKE MODEL.
BOTH COMPUTATIONAL MODELS ARE ALMOST OPERATIONAL TODAY. IN MORE DETAIL WE NOTE THAT :
- THE INVERSE VISCOUS METHOD IN ITS INCOMPRESSIBLE VERSION HAS TAKEN ITS FINAL FORM. WORK IS CURRENTLY CARRIED OUT ON THE COMPRESSIBLE VERSION, AS WELL AS ON THE ENRICHMENT OF THE TURBULENCE MODELLING.
- THE INVERSE INVISCID METHOD HAS ALREADY GIVEN TWO-DIMENSIONAL RESULTS AND HAS BEEN SUCCESSFULLY VALIDATED. THE QUASI 3-D VERSION IS UNDER DEVELOPMENT.
- THE DIRECT THREE-DIMENSIONAL POTENTIAL SOLVER HAS ALREADY PRODUCED REALISTIC RESULTS FOR A PREFIXED WAKE POSITION.
THE FINAL STEP OF OUR WORK WILL BE FOCUSED ON A REDESIGN OF A CLASSICAL HAWT (NIBE B) BY THE USE OF OUR COMPUTATIONAL TOOLS.
The method of calculation of the shear layer, which is used in the present procedure has been developed on the basis of Le Foll's method.
A differential method for performance prediction of a horizontal axis wind turbine (HAWT) rotor blade has also been carried out. This method is quite fast and accurate and may provide a good estimation for the blade loading and the global velocity field properties, as long as flow separation is not present. The presented method solves the full potential equation in a strongly conservative form, while periodicity and Kutta-Joukofski conditions have been successfully implemented.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences classical mechanics fluid mechanics fluid dynamics
- engineering and technology environmental engineering energy and fuels renewable energy wind energy
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Coordinator
15780 ATHENS
Greece
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