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结合文献资料考证与现场调研结果,本文就扬州地区年平均主导风况和次主导风况下,个园“冬山”景区现状及其60年代复原模型的风场特征进行仿真,并计算出景窗及其附近表面气动声的声功率级。风场仿真结果显示,两种景观格局均不具备形成声景效应的风场条件。虽说东北风条件下形成了少量穿越窗洞的气流,但窗洞对气流没有加速作用;气动声计算结果显示,景窗大部分表面的声功率级为0d B,最高不超过6.73d B,极易被背景噪声掩盖;另外,景窗附近墙面同时存在大量声功率级高过景窗表面的气动声源,最高可达37.5d B,景窗产生的气动声应该不易被听到。这一仿真结果为进一步考证扬州个园“冬山”景窗声景效应提供了技术上的参考。
Based on the research of literature data and field investigation, this paper simulates the current situation of the scenic spots of “Garden” and “Dongshan Mountain” and the wind field characteristics of the 1960s restoration model under the average dominant and sub-dominant wind conditions in Yangzhou and calculates Sound power level of the sound of the sound of the sounding window and its vicinity. Wind field simulation results show that the two landscape patterns do not have the sound field conditions to form the soundscape effect. Although a small amount of air flow through the window was formed under the northeasterly wind, the window did not accelerate the air flow. The calculation results of aerodynamic noise showed that the sound power level of most of the surface of the window was 0d B and the maximum was 6.73d B, In addition, there are a large number of acoustic power levels above the surface of the window with sound power level up to 37.5dB. The aerodynamic noise generated by the window should not be easily heard. The simulation results provide a technical reference for further research on the soundscape effect of Yangzhou Park “Dongshan ”.