A point collocation approach to modelling large dissipative silencers
A point collocation approach to modelling large dissipative silencers
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DOI：
10.1016/j.jsv.2004.10.016
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发表时间：
2005-08
影响因子：
4.7
通讯作者：
R. Kirby;J. B. Lawrie
中科院分区：
文献类型：
--
作者：
R. Kirby;J. B. Lawrie
一种称为点配置的数值匹配技术被用来对暖通空调风管中常见的一种类型的大耗散分离式消声器进行数学建模。在没有平均流的情况下，将用点配置得到的传输损耗预测与精确的解析模式匹配预测进行了比较。在解析模式匹配预测可用的频率范围内，对于大范围的分路器消声器，观察到与点配置传输损失预测很好的一致性。证明了用点配点法处理大型耗能消声器的有效性，以及该方法的计算效率和对任意轴向均匀截面的耗能消声器的适用性。
A numerical matching technique known as point collocation is used to model mathematically large dissipative splitter silencers of a type commonly found in HVAC ducts. Transmission loss predictions obtained using point collocation are compared with exact analytic mode matching predictions in the absence of mean flow. Over the frequency range in which analytic mode matching predictions are available, excellent agreement with point collocation transmission loss predictions is observed for a range of large splitter silencers. The validity of using point collocation to tackle large dissipative silencers is established, as is the computational efficiency of the method and its suitability for tackling dissipative silencers of arbitrary, but axially uniform, cross-sections.