For transonic and supersonic wind tunnel, fiber glass鄄filled or micro鄄perforated silencer, or resonant鄄
cavity silencer is usually installed upstream of the settling chamber to reduce the strength of current noises generated
by the driving force source components such as the main pressure鄄regulating valve,the ejector for the intermittent wind
tunnel and the compressor for the continuous wind tunnel, restraining noise propagation from affecting the flow quality
in the test section. With the development of technology, especially the technology of noise鄄reduction, multi鄄layer Sin鄄
tered鄄wire mesh becomes a kind of new鄄style silencer which may replace the above鄄mentioned silencers. A method is
proposed in this paper for this new technique to test whether or not reduce the strength of current noises for wind tun鄄
nel. Through pilot tests, it is proved that multi鄄layer sinter鄄wire mesh is better than above鄄mentioned silencers in the
aspect of anechoic impact in the 0. 3 m pilot wind tunnel, improving downstream flow quality remarkably and reducing
the turbulence extensively. This technology can be applied to the xx supersonic wind tunnel. Through capability test
in xx supersonic wind tunnel,this method achieve intention,expand the technology of noise鄄reduction for wind tunnel.