TY - GEN
T1 - Inflow below the rotor disk for skewed flow by the finite-state, adjoint method
AU - Fei, Zhongyang
AU - Peters, David A.
PY - 2012
Y1 - 2012
N2 - The inflow below the rotor disk is derived in a mathematically rigorous way from the potential flow equations and the Peters-Morrilo inflow model. With information from the co-states of the adjoint inflow equations (along with the normal states), one can calculate the velocity in the hemisphere below the rotor disk plane (the regions both within and outside the wake are included) without losing accuracy or convergence rate. The new methodology enables one to calculate the velocity below the rotor disk with the Finite-state method, and the only cost is the addition of the uncoupled co-states. Numerical results compared with exact solutions for the z-component in skewed angle flow are showed in order to illustrate the effectiveness of the new method.
AB - The inflow below the rotor disk is derived in a mathematically rigorous way from the potential flow equations and the Peters-Morrilo inflow model. With information from the co-states of the adjoint inflow equations (along with the normal states), one can calculate the velocity in the hemisphere below the rotor disk plane (the regions both within and outside the wake are included) without losing accuracy or convergence rate. The new methodology enables one to calculate the velocity below the rotor disk with the Finite-state method, and the only cost is the addition of the uncoupled co-states. Numerical results compared with exact solutions for the z-component in skewed angle flow are showed in order to illustrate the effectiveness of the new method.
UR - https://www.scopus.com/pages/publications/84880486351
M3 - Conference contribution
AN - SCOPUS:84880486351
SN - 9781627480611
T3 - 38th European Rotorcraft Forum 2012, ERF 2012
SP - 708
EP - 719
BT - 38th European Rotorcraft Forum 2012, ERF 2012
T2 - 38th European Rotorcraft Forum 2012, ERF 2012
Y2 - 4 September 2012 through 7 September 2012
ER -