... boundary layer measurements. Both experiments and computational fluid dynamics (CFD) show large variations of transition location along the vane span with strong influences from endwalls and turbine outlet conditions. Both agree well with traditional transition onset correlations near midspan and show...

... optimization. The aim of this paper is to demonstrate the feasibility of using three-dimensional full assembly unsteady Reynolds-averaged Navier–Stokes (URANS) CFD for modeling surge cycles of an eight-stage high-speed compressor rig. Results from this work show stalling of the mid-stages is the surge trigger...

.... , and Johansson , T. , 2013 , “ Performance Test and Analysis of the Highly Loaded 1.5 Stage Transonic Test Compressor HULDA ,” Proceedings of ISABE 2013 , ISABE-2013-1127 . [9] Ellbrant , L. , Eriksson , L.-E. , and Mårtensson , H. , 2014 , “ Predictive Capability of CFD Models...

...: Li He. 28 11 2018 27 06 2019 28 06 2019 aeromechanical instabilities compressor forced response CFD multi-row Flutter and forced response in turbomachinery can lead to high cycle fatigue failure. Flutter occurs when the vibration-dependent forces cause a negative...

... in the Appendix. The solver is a 3D CFD code in which the governing equations are discretized using the finite-element based finite-volume method. Two main advantages of such hybrid CFD method are geometric flexibility due to the finite-element method and retaining the conservation properties of the finite-volume...

... for the identification of the correct values of some CFD parameters (see Sec. 3 ), additional data were acquired only in static conditions inside the channel entry section at x  = 120 mm in planes aligned with the triangle bisectors (planes IN1, IN2, and IN3 in Fig. 2( d ) ). The description of the secondary flows...

... are plugged. Therefore, the same pressure ratio can be maintained with a smaller volume flow. The calculations are performed with the commercial 3D Reynolds-averaged computational fluid dynamics (CFD) code ANSYS CFX 11.0 ( 21 ). For the closure problem the shear-stress-transport (SST) turbulence...

... concepts for possible optimization were derived. Complementary numerical simulations were carried out using the commercial computational fluid dynamics (CFD) code ANSYS CFX . The motivation was to evaluate whether CFD can be used as an engineering design tool in the optimization of the heat shield...

... − 10 deg to + 14.5 deg relative to design incidence. 05 04 2008 21 04 2008 10 04 2009 aerodynamics blades gas turbines turbomachinery MISES boundary layer method 2D cascade validation transonic off-design HPT incidence loss CFD Customers who purchase gas...

... the rotor cavity and strong radial pressure gradients opposing inflow. In the present work the relative performance of a series of noncircular offtake passages has been assessed using CFD techniques. The results of this work demonstrate the degree of control that may be exercized over swirl uptake, which...

... Response Turbomachinery Turbine Turbopumps CFD Design Turbines for liquid rocket engine applications are extreme in many aspects depending on the engine type and application. To reach high rocket engine performance, the goal is to maximize the pressure levels, which can be achieved by using...