Computations and experiments on the flow physics of edgewise ducted fan air vehicles

Jason M. Halwick, Jules W. Lindau, James J. Dreyer, Dennis K. McLaughlin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A coupled blade element theory - CFD method was developed for the study of dual ducted fan vehicles in edgewise forward flight. This coupled method was pursued in the interest of keeping computational costs low to allow for rapid design and preliminary analysis while increasing fidelity of the solution by using a non-uniform thrust distribution. The BET-CFD coupled method was run and compared to a momentum source CFD, assuming ideal rotor performance, a fully resolved rotor CFD solution and to experiments. It was found that the coupled solution was able to reproduce flow phenomena such as the lip separation and the distorted inflow field quite accurately. While improvement was seen in the high speed forward flight simulation as compared to the momentum source computations, the method failed to produce accurate and reliable lift and drag results over the entire flight regime. Further refinement is required in the implementation of the blade element theory into the coupled loop in order to improve the fidelity of the computations.

Original languageEnglish (US)
Title of host publication68th American Helicopter Society International Annual Forum 2012
Pages85-94
Number of pages10
StatePublished - Aug 16 2012
Event68th American Helicopter Society International Annual Forum 2012 - Fort Worth, TX, United States
Duration: May 1 2012May 3 2012

Publication series

NameAnnual Forum Proceedings - AHS International
Volume1
ISSN (Print)1552-2938

Other

Other68th American Helicopter Society International Annual Forum 2012
CountryUnited States
CityFort Worth, TX
Period5/1/125/3/12

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Halwick, J. M., Lindau, J. W., Dreyer, J. J., & McLaughlin, D. K. (2012). Computations and experiments on the flow physics of edgewise ducted fan air vehicles. In 68th American Helicopter Society International Annual Forum 2012 (pp. 85-94). (Annual Forum Proceedings - AHS International; Vol. 1).