NUMERICAL SIMULATION OF INVISCID FLOW AROUND HOVERING HELICOPTER ROTOR UNSING UPWIND SCHEME ON UNSTRUCTURED MESHES

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HEJRANFAR K.; MOHAMMADI SEYED MASOUD

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Journal: MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING) Year:2008 | Volume:23 | Issue:41-42 Page(s): 143-154

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Title

NUMERICAL SIMULATION OF INVISCID FLOW AROUND HOVERING HELICOPTER ROTOR UNSING UPWIND SCHEME ON UNSTRUCTURED MESHES

Author(s)

HEJRANFAR K. | MOHAMMADI SEYED MASOUD | Issue Writer Certificate

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Abstract

This paper presents an upwind solution of compressible in viscid flow field around a helicopter rotor in hover, using Roe's scheme on unstructured tetrahedral meshes. Higher order differences are computed using a high-order Monotone Upstream Centered Conservation Law (MUSCL) method. The numerical algorithm utilizes an explicit time integration scheme and the solution is accelerated by applying the implicit residual smoothing at every stage of time integration. To demonstrate the solution accuracy, the numerical simulations of the flow field around an isolated helicopter rotor, in hover, for two operating conditions of subsonic and transonic tip Mach numbers of 0.44 and 0.877, with a blade pitch angle of 8 deg, are performed. The present results for aerodynamic characteristics, including the pressure distributions at different sections of the blade, are compared with numerical and experimental results.The effects of the spatial solution accuracy of the numerical method on the flowfield characteristics and aerodynamic results of the rotor are also studied.

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APA: Copy

HEJRANFAR, K., & MOHAMMADI, SEYED MASOUD. (2008). NUMERICAL SIMULATION OF INVISCID FLOW AROUND HOVERING HELICOPTER ROTOR UNSING UPWIND SCHEME ON UNSTRUCTURED MESHES. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), 23(41-42), 143-154. SID. https://sid.ir/paper/128280/en

Vancouver: Copy

HEJRANFAR K., MOHAMMADI SEYED MASOUD. NUMERICAL SIMULATION OF INVISCID FLOW AROUND HOVERING HELICOPTER ROTOR UNSING UPWIND SCHEME ON UNSTRUCTURED MESHES. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING)[Internet]. 2008;23(41-42):143-154. Available from: https://sid.ir/paper/128280/en

IEEE: Copy

K. HEJRANFAR, and SEYED MASOUD MOHAMMADI, “NUMERICAL SIMULATION OF INVISCID FLOW AROUND HOVERING HELICOPTER ROTOR UNSING UPWIND SCHEME ON UNSTRUCTURED MESHES,” MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), vol. 23, no. 41-42, pp. 143–154, 2008, [Online]. Available: https://sid.ir/paper/128280/en

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