针对汽车、高铁和大飞机存在的流场和声学问题，采用以CFD为主要工具的数值分析方法，结合实验测试，研究汽车空调系统、发动机进排气系统和飞机进气道的降噪优化问题。

发表论文：

1 Lianyun Liu, Xu Zheng, Zhiyong Hao, Yi Qiu. "A hybrid time-frequency domain method to predict insertion loss of intake system." The Journal of the Acoustical Society of America, 148 (2020) 2945-2957.

2 Lianyun Liu, Xu Zheng, Zhiyong Hao, Yi Qiu. "A computational fluid dynamics approach for full characterization of muffler without and with exhaust flow." Physics of Fluids, 32 (2020) 066101.

3 Lianyun Liu, Xu Zheng, Zhiyong Hao, Yi Qiu. "A time-domain simulation method to predict insertion loss of a dissipative muffler with exhaust flow." Physics of Fluids, 32 (2021) 067114.

4 Lianyun Liu, Zhiyong Hao, Yi Qiu, Xu Zheng. "A modified time domain approach for calculation of noise reduction and acoustic impedance of intake duct system." Applied Acoustics, 168 (2020) 107420.

5 Liu, Lianyun, Xu Zheng, Zhiyong Hao, Yi Qiu. "A modified reciprocal equation to predict the complex transmission coefficient of a flow duct." AIP Advances, 11 (2021) 095001.

6 Lianyun Liu, Xu Zheng, Yi Qiu, Zhiyong Hao. “Application of reciprocity to calculating the scattering matrix of a dissipative muffler without and with nonuniform meanflow.” Acoustics Australia 2022.

7 Yanhong Sun, Yi Qiu, Lianyun Liu*, Xu Zheng*. Three-Dimensional Acoustic Analysis of a Rectangular Duct with Gradient Cross-Sections in High-Speed Trains. Applied Sciences, 12 (2022).

8 Liu Lian-yun, Hao Zhi-yong, Liu Chi. “CFD analysis of a transfer matrix of exhaust muffler with mean flow and prediction of exhaust noise.” Journal of Zhejiang University-SCIENCE A, 13, (2012) 709-716.

9 Lianyun Liu, Zhiyong Hao, Xinyi Qian, Xianfeng Hu. A three-dimensional CFD approach for prediction of noise reduction of mufflers without mean flow. International Journal of Vehicle Noise and Vibration, 9 (2012) 248-258.

10 刘联鋆, 郝志勇, 刘迟. 空气滤清器流动阻力与噪声特性的仿真和优化. 汽车工程, 33 (2011) 1092-1097. 

11 刘联鋆, 郝志勇, 钱欣怡. 空滤器滤芯声学特性的仿真方法. 浙江大学学报(工学版) , 10 (2012) 1784-1789. 

12 刘联鋆, 郝志勇, 钱欣怡, 胡先锋. 涡轮增压器出口消声器的性能预测和评估. 哈尔滨工程大学学报, 34 (2013) 197-201. 

13  刘联鋆, 郝志勇, 郑旭. 基于计算流体动力学的内燃机进气空滤器消声量计算. 振动与冲击,  32 (2013) 141-145. 

14 刘联鋆, 郝志勇, 钱欣怡, 胡先锋. 增压发动机的进气噪声源提取和进气噪声的预测. 内燃机学报,  31 (2013) 177-182. 

15 刘联鋆, 郝志勇, 郑旭. 复杂腔体四极子矩阵的三维CFD计算方法. 振动工程学报,  26 (2013) 298-302. 

国家自然科学基金青年项目：多孔材料声学表征的时域CFD法及其在飞机复合声衬应用的研究