Abstract: In centrifugal compressors, it is common to observe a rapid reduction in surge margin toward high rotational speed, which shows a non-linear surge characteristic against the change of rotational speed. This paper presents ...

Abstract: In this paper, a loworder model for predicting performance of radial turbocharger turbines is presented. The model combines an unsteady quasithreedimensional (Q3D) computational fluid dynamics (CFD) method with multiple ...

Abstract: The performance of automotive turbocharger turbines has long been realized to be quite different under pulsating flow conditions compared to that under the equivalent steady and quasisteady conditions on which the conventional ...

Abstract: This paper aims to study the mixing loss characteristic of supercritical carbon dioxide (sCO2) near the critical point and shed light on the nonideal fluid effect on the mixing losses. As a simplified model of the mixing ...

Abstract: In this paper, we investigate the coupled interaction between a new short intake design with a modern fan in a high-bypass ratio civil engine, specifically under the off-design condition of high incidence. The interaction ...

Abstract: In this paper, an unsteady tip leakage flow phenomenon is identified and investigated in a centrifugal compressor with a vaneless diffuser at near-stall conditions. This phenomenon is associated with the inception of a ...

Abstract: In this paper, experiments and numerical modeling are used to quantify the effects of clearance and eccentricity on compressor performance and to examine the influence of each on flow distribution and stall margin. A change ...

Abstract: In this paper, we present an extensive numerical study on the interaction between the downstream fan and the flow separating over an intake under high incidence. The objectives of this investigation are twofold: (a) to ...