论文信息 - Complex Flow for Wing-in-ground Effect Craft with Power Augmented Ram Engine in Cruise

Complex Flow for Wing-in-ground Effect Craft with Power Augmented Ram Engine in Cruise

Abstract Power augmented ram (PAR) engine is a popular equipment to reduce the requirement of power for takeoff and improve aerodynamic performance. To provide detailed insight into the aerodynamic characteristics of wing-in-ground effect (WIG) craft with PAR engine, numerical simulations are carried out on WIG craft models in cruise. Simplified engine models are applied to the simulations. Two cruise modes for PAR engine are considered. The aerodynamic characteristics of the WIG craft and other features are studied. Comparisons with WIG craft model without PAR show that shutoff of PAR engine results in an increase in drag and less change in lift. Accordingly for the work of PAR engine, the air flow blown from the engine accelerates the flow around the upper surface and a high-speed attached flow near the trailing edge is recorded. With the schemed PAR flow, more suction force is realized and the flow features over the wing vary noticeably. It is also shown that the Coanda effect, provided with an attached flow, introduces an appropriate and practical flow mode for WIG craft with PAR engine in cruise. The results refresh our understanding on aerodynamic characteristics of WIG craft.

Yang Wei | Yang Zhigang

[1] T. Shih,et al. A new k-ϵ eddy viscosity model for high reynolds number turbulent flows , 1995 .

[2] O. Brodersen,et al. Drag Prediction of Engine -Airframe Interference Effects Using Unstructured Navier -Stokes Calculations , 2001 .

[3] T Fuwa,et al. FUNDAMENTAL STUDY ON SAFETY EVALUATION OF WING-IN-SURFACE EFFECT SHIP (WISES) , 1993 .

[4] Wu Yi-zhao,et al. Parallel Computing Strategy for a 3D Hybrid Unstructured Navier-Stokes Solver , 2005 .

[5] John C. Vassberg,et al. Development of a Common Research Model for Applied CFD Validation Studies , 2008 .

[6] Malcolm J. Bowman,et al. Proceedings of the Workshop , 1978 .

[7] Michael Holloran,et al. Wing in Ground Effect Craft Review , 1999 .

[8] Kirill V. Rozhdestvensky,et al. Wing-in-ground effect vehicles , 2006 .

[9] Yulong Li,et al. Analysis of Two Configurations for a Commercial WIG Craft based on CFD , 2009 .

[10] Hong Liang. Simulation of3-D Flow Around WIG with Nonlinear k-εTurblence Model , 2003 .

[11] Liu Peiqing. Numerical Simulation and Analysis of Aerodynamics of WIG Craft in Cruise over Ground , 2006 .

[12] Yang Zhigang. Aerodynamic Investigation of a 2D Wing and Flows in Ground Effect , 2009 .

[13] Kirill V. Rozhdestvensky. Aerodynamics of a Lifting System in Extreme Ground Effect , 2000 .