ACTA AERONAUTICAET ASTRONAUTICA SINICA >
An Immersed Boundary Method for Simulating Oscillating Rotor Blades
Received date: 2013-10-31
Revised date: 2014-01-13
Online published: 2014-01-17
Supported by
National Natural Science Foundation of China (51076006)
The numerical simulation associated with fluid-structure interaction is very complicated for it requires repeated grid regeneration in the traditional method. In the present work, a fast explicit numerical method is established to solve the unsteady flow with oscillation of a rotor blade on the basis of an immersed boundary method. In order to validate the method, two simulation cases are carried out: an oscillating cylinder at low KC (Keulegan-Carpenter) number, and a two degrees of freedom oscillating cylinder, and the results agree well with previous research. Based on these benchmark cases, a numerical simulation for an oscillating airfoil is then established. It is found that the oscillation of rotor blades is influenced greatly by the reduced velocity and cascade solidity. It is worth noting that the coupling process is not necessary for generating any body-fitting grid, which makes it much faster to perform the computational process for such complicated fluid-structure interaction problems.
HU Guotun , DU Lin , SUN Xiaofeng . An Immersed Boundary Method for Simulating Oscillating Rotor Blades[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(8) : 2112 -2125 . DOI: 10.7527/S1000-6893.2013.0517
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