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A practical method for aerodynamic investigation of WIG

Seif, M. S ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1108/AEAT-05-2014-0060
  3. Publisher: Emerald Group Publishing Ltd , 2016
  4. Abstract:
  5. Purpose - The purpose of this paper is to present a fast, economical and practical method for mathematical modeling of aerodynamic characteristics of rectangular wing in ground (WIG) effect. Design/methodology/approach - Reynolds averaged Navier-Stokes (RANS) equations were converted to Bernoulli equation by reasonable assumptions. Also, Helmbold's equation has been developed for calculation of the slope of wing lift coefficient in ground effect by defining equivalent aspect ratio (ARe). Comparison of present work results against the experimental results has shown good agreement. Findings - A practical mathematical modeling with lower computational time and higher accuracy was presented for calculating aerodynamic characteristics of rectangular WIG effect. The relative error between the present work results and the experimental results was less than 8 per cent. Also, the accuracy of the proposed method was checked by comparing with the numerical methods. The comparison showed fairly good accuracy. Research limitations/implications - Aerodynamic surfaces in ground effect were used for reducing wetted surface and increasing speed in high-speed marine and novel aeronautical vehicles. Practical implications - The proposed method is useful for investigation of aerodynamic performance of WIG vehicles and racing boats with aerodynamic surfaces in ground effect. Originality/value - The proposed method has reduced the computational time significantly as compared to numerical simulation that allows conceptual design of the WIG crafts and is also economical
  6. Keywords:
  7. Mathematical modeling ; Rectangular wing ; Aerodynamics ; Air cushion vehicles ; Aspect ratio ; Conceptual design ; Ground effect ; Lift ; Mathematical models ; Numerical methods ; Aero-dynamic performance ; Aerodynamic characteristics ; Aerodynamic surfaces ; Bernoulli equations ; Computational time ; Design/methodology/approach ; Rectangular wings ; Reynolds averaged Navier Stokes (RANS)equations ; Navier Stokes equations
  8. Source: Aircraft Engineering and Aerospace Technology ; Volume 88, Issue 1 , 2016 , Pages 73-81 ; 00022667 (ISSN)
  9. URL: http://www.emeraldinsight.com/doi/full/10.1108/AEAT-05-2014-0060