Abstract
The internal flow in a simplified heating,ventilation,and air conditioning(HVAC) model was calculated by large-eddy simulation(LES).The acoustic field generated from the flow in the HVAC model was computed by solving the Lighthill equation in the frequency domain,using the LES results to calculate the sound sources.The computed sound pressure level(SPL) agrees reasonably well with the experimental data of Wakahara et al.A maximum difference of about 7 dB at the frequency 800 Hz between the computed SPL and the experimental data was found.The reason of the difference will be investigated in detail in the next stage.
