Comparison of two rapid numerical methods for predicting the performance of multiple rigid wing-sails
Paper i proceeding, 2020

The purpose of this study is to compare the accuracy of two cost-effective aerodynamic methods used to predict the performance of a large scale wind propulsion system. The methods are evaluated regarding their ability to predict the performance of a configuration consisting of four rigid wing sails of an approximate height of 80 m and average chord length of 23 m. The distance between the wing sails, from trailing to leading edge, is about one chord length.

For a limited number of test cases, it is evaluated how well the methods balance computational cost and accuracy and their potential to predict the performance of multiple rigid wing configurations. Two different types of aerodynamic methods are compared; one method under development based on potential flow/lifting line theory in combination with pre-calculated 2D CFD RANS data (CORR-SILL), and a vortex lattice method (VLM). The results from the two different methods are compared with 3D CFD RANS simulations. The parameters compared are the induced velocities around the sails, system forces
and longitudinal center of effort.

This paper indicates that both evaluated methods show potential to predict the magnitude and distribution of the forces on multiple wing sail, with a large reduction of computational effort compared to CFD.

Författare

Karolina Malmek

SSPA Sweden AB

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Ulysse Dhomé

Kungliga Tekniska Högskolan (KTH)

Lars Larsson

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Sofia Werner

SSPA Sweden AB

Jonas Ringsberg

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Christian Finnsgard

SSPA Sweden AB

The 5th International Conference on Innovation in High Performance Sailing Yachts and Sail-Assisted Ship Propulsion (INNOV’SAIL 2020)

49-58

The 5th International Conference on Innovation in High Performance Sailing Yachts and Sail-Assisted Ship Propulsion (INNOV’SAIL 2020)
Gothenburg, Sweden,

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Styrkeområden

Transport

Energi

Ämneskategorier

Energiteknik

Farkostteknik

Fundament

Grundläggande vetenskaper

Mer information

Skapat

2020-06-17