In order to investigate the unsteady flow frequency domain performances of an axial flow compressor at different mass flow , rotating speed and blade row spacing , plus inlet flow distortion , and considering aerodynamic characteristics and stability of the compressor , the low speed research compressor ( lsc ) at college of energy and power in nuaa is used to carry out the experiment studies . a large amount of test data has been gained through dynamic pressure transducers embedded in the stator blades at the tip , middle and hub section , then fast fourier transform algorithm ( fft ) is applied to calculate the frequency data 為探討軸流壓氣機(jī)在工作流量、工作轉(zhuǎn)速及動?靜葉排軸向間距變化時的葉片排流場非定常頻譜特性變化規(guī)律,并耦合進(jìn)氣畸變的影響,同時與壓氣機(jī)氣動性能和氣動穩(wěn)定性相關(guān)聯(lián),作者利用南京航空航天大學(xué)能源與動力學(xué)院的低速大尺寸軸流壓氣機(jī)( lsc )試驗器,采取在靜子葉片表面埋入動態(tài)壓力傳感器的實驗方法,對葉尖、葉中和葉根三個截面的動態(tài)壓力進(jìn)行了測量,獲得了大量的可靠的實驗數(shù)據(jù)。
Flow pulsation of a specific gear pump is analyzed and the results are given . according to the testing requirement of pump pulsation , the measurement device of the testing flow pulsation , based on iso 10767 - 2 measurement standard , the measurement device of flow pulsation testing is built . high speed dynamic pressure transducer is used to record the pressure pulsation in the pipeline 然后根據(jù)齒輪泵流量脈動的檢測要求,采用iso10767 - 2測試方法,搭建了齒輪泵流量脈動測試裝置,采用動態(tài)壓力傳感器,對齒輪泵系統(tǒng)進(jìn)行了壓力脈動測試,利用壓力脈動與流量脈動的比例關(guān)系,對齒輪泵流量脈動分析結(jié)果進(jìn)行了驗證。