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Performance Evaluation of Tandem Bladed Centrifugal Compressor

机译：串联叶片式离心压缩机的性能评估

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AbstractA tandem-bladed centrifugal compressor which may have better performance than the conventional designs has not yet been studied for its potential turbocharger application. In addition, no numerical study of the entire stage (including tandem impeller and volute) has been performed to fully exploit the benefits of such design with variation in axial clearance levels, circumferential clocking fractions, blade geometries/angles, number of inducer blades and the thickness of inducer blades. This paper presents a thorough experimental and numerical study on the performance of a moderate pressure ratio, unshrouded, tandem-bladed centrifugal compressor in comparison to a conventional compressor of commercial use in china for turbocharger application. The characteristics of a tandem compressor are investigated and compared for various parameters. Conventional impeller was first modified into tandem-bladed design but with no modifications in backsweep angle, meridional gas passage and camber distributions ...
机译：摘要串联叶片式离心压缩机的潜在涡轮增压器应用尚未得到研究，该压缩机可能比传统设计具有更好的性能。此外，尚未进行整个阶段（包括串联叶轮和蜗壳）的数值研究，以充分利用这种设计的好处，即轴向游隙水平，周向计时分数，叶片几何形状/角度，诱导叶片的数量和诱导叶片的厚度。与目前中国商用涡轮增压器的常规压缩机相比，本文对中压比，无罩，串联叶片式离心压缩机的性能进行了详尽的实验和数值研究。研究了串联压缩机的特性，并比较了各种参数。常规叶轮首先被修改为串联叶片设计，但后掠角，子午气体通道和外倾角分布没有变化。

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