Wind noise is an important indicator for evaluating cabin comfort, and it is
essential to accurately predict the wind noise inside the vehicle. In the early
stage of automotive design, since the geometry and properties of the sealing
strip are often unknown, the contribution of the sealing strip to the wind noise
is often directly ignored, which makes the wind noise obtained through
simulation in the pre-design stage to be lower than the real value. To
investigate the effect of each seal on wind noise, an SUV model was used to
simulate the cases of not adding body seals, adding window seals, and further
adding door seals, respectively. The contribution of each seal to wind noise was
obtained and verified by comparing it with the test results. The influence of
the cavity formed at the door seal was also addressed. In the simulations, a CFD
solver based on the lattice Boltzmann method (LBM) was used to solve the
external flow field, and the noise transmitted into the interior of the vehicle
through each sealing strip was analyzed using the statistical energy analysis
(SEA) method. The results show that the simulation method used in this article
can predict the effect of each seal on wind noise more accurately in the
pre-design stage of the automobile, which provides guidance for the control of
seal noise in the pre-design of the automobile. By analyzing the impact of
various sealing strips on the noise inside the car, the significance to take
into account the effect of door and window seals on interior noise during the
early stages of car design is verified, and it proves that the adopted method
can provide effective guidance for controlling sealing noise in the early stage
of car design.
