| Abstract: | The flow about a double grid of solid profiles of arbitrary shape which vibrate in a stream of an ideal incompressible fluid
is considered. Behind the grid profiles, the nonstationary vortex traces simulated by the lines of contact velocity discontinuity
are taken into account. The problem is reduced to the solution of a system of two integral equations relative to the fluid
velocity on the initial profiles of the double grid under the assumption that the vibration amplitudes are small. Formulas
for calculating the nonstationary forces and moments are derived. The dependences of these forces on the shape, mutual positions,
and laws of vibration of the grid profiles are studied.
Lavrent’ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, Novosibirsk 630090. Translated from
Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 40, No. 4, pp. 150–155, July–August, 1999. |
