  In this paper, the authors propose an analysis of the frequency response
function in a car compartment, subject to some fluctuating pressure
distribution along the open cavity of the sun-roof at the top of a car.
Coupling of a computational fluid dynamics and of a computational acoustics
code is considered to simulate the acoustic fluid-structure interaction
problem. Iterative Krylov methods and domain decomposition methods, tuned on
Graphic Processing Unit (GPU), are considered to solve the acoustic problem
with complex number arithmetics with double precision. Numerical simulations
illustrate the efficiency, robustness and accuracy of the proposed approaches.
