YE Liang, ZHAO Qi-jun, XU Guo-hua. Numerical simulation of flowfield of helicopter rotor and fuselage in forward flight based on unstructured embedded grid technique[J]. 2009, 24(4).
YE Liang, ZHAO Qi-jun, XU Guo-hua. Numerical simulation of flowfield of helicopter rotor and fuselage in forward flight based on unstructured embedded grid technique[J]. 2009, 24(4).DOI:
A numerical method has been developed to simulate the flowfield of the helicopter rotor
fuselage and the combination of them in forward flight.In this method
unstructured embedded grid technique was used to simulate the position transformation relationship between the rotor and its fuselage
the three-dimensional unsteady Navier-Stokes(N-S) equations were discretized by a second-order upwind finite-volume scheme and the lower-upper symmetric Gauss-Seidel(LU-SGS) scheme was employed in time-stepping.A new method was given to solve the problem of the "donor searching" when the space between the rotor and its fuselage was too narrow.Based on this model
the flowfield of the single rotor
fuselage and the combination of them were calculated
the comparisons of the calculated results with the experimental data indicate that the present method is very effective to analyze the helicopter flowfield in forward flight.