Flow Field Simulation and Noise Control of a Twin-Screw Engine-Driven Supercharger

Table 1

Calculation of the pressure pulsation peak SPL value.

	Reference sound pressure (Pa)	Background pressure (Pa)	Peak pressure (Pa)	Average fluctuation pressure (Pa)	Noise calculation (dB)
Before optimization	0.00002	135000	162000	27000	182.6066754
After optimization	0.00002	135000	118000	17000	178.5883785