典型文献
Acoustic characteristics of bi-directional turbines for thermo-acoustic generators
文献摘要：
Bi-directional turbines combined with rotary motors may be a feasible option for developing high power thermoacoustic generators with low cost.A general expression for the acoustic characteristics of the bi-directional turbine was proposed based on theoretical derivation,which was validated by computational fluid dynamics modeling of an impulse turbine with fixed guide vanes.The structure of the turbine was optimized primarily using steady flow with an efficiency of near 70％(the shaft power divided by the total energy consumed by the turbine).The turbine in the oscillating flow was treated in a lumped-parameter model to extract the acoustic impedance characteristics from the simulation results.The key acoustic impedance characteristic of the turbine was the resistance and inertance due to complex flow condition in the turbine,whereas the capacitance was treated as an adiabatic case because of the large-scale flow channel relative to the heat penetration depth.Correlations for the impedance were obtained from both theoretical predictions and numerical fittings.The good fit of the correlations shows that these characteristics are valid for describing the bi-directional turbine,providing the basis for optimization of the coupling between the thermoacoustic engine and the turbine using quasi-one-dimensional theory in the fre-quency domain.
文献关键词：
中图分类号：
作者姓名：
Dongdong LIU;Yanyan CHEN;Wei DAI;Ercang LUO
作者机构：
University of Chinese Academy of Sciences,Beijing 101408,China;Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China
文献出处：
引用格式：
[1]Dongdong LIU;Yanyan CHEN;Wei DAI;Ercang LUO-.Acoustic characteristics of bi-directional turbines for thermo-acoustic generators)[J].能源前沿,2022(06):1027-1036
A类：
inertance
B类：
Acoustic,characteristics,directional,turbines,generators,Bi,combined,rotary,motors,may,feasible,option,developing,high,power,thermoacoustic,cost,general,expression,was,proposed,theoretical,derivation,which,validated,by,computational,fluid,dynamics,modeling,impulse,fixed,guide,vanes,structure,optimized,primarily,using,steady,flow,efficiency,near,shaft,divided,total,energy,consumed,oscillating,treated,lumped,parameter,extract,impedance,from,simulation,results,key,resistance,due,complex,condition,whereas,capacitance,adiabatic,case,because,large,scale,channel,relative,heat,penetration,depth,Correlations,were,obtained,both,predictions,numerical,fittings,good,correlations,shows,that,these,are,describing,providing,basis,optimization,coupling,between,engine,quasi,one,dimensional,theory,fre,quency,domain
AB值：
0.54746
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
