...Kali Charan Nayak One of the basic assumptions of the traditional labyrinth seal leakage calculation is that rotation has minimal or no effect on seal leakage. With the advancement of gas turbine technology, to achieve high performance, seals are run at tight clearances and very high rotational...

... are excellent throughout the first seconds of crankshaft rotation when thermal conditions are rapidly changing, and subsequently when quasisteady thermal conditions prevail around the bearing. 11 Comparison of measured and predicted crankshaft main bearing friction force for minimum, mean, and maximum...

... mounted in the middle of a Z-shaped shaft. The two ends of the shaft rotate, while the disk “nutates,” performs a wobbling motion without rotating around its axis. The motion of the disk circumference prescribes a portion of a sphere. A portion of the area of the disk is used for intake and compression...

... 01 February 2000 15 08 2003 turbines rotation modelling modal analysis vibrations frequency estimation finite element analysis mathematical morphology When a structure has two modes with closely spaced natural frequencies, their corresponding mode shapes can interact...

... experimental data and supporting analysis of real rotating components. This paper presents the results of a unique experimental method and data analysis study of multiple damping sources seen in actual turbine components operating at engine conditions. The contributions of both aerodynamic and structural...

.... Mignolet. 01 February 2000 01 September 2001 19 06 2002 turbines rotation modelling vibrations frequency response engineering computing finite element analysis Small variations of individual blade characteristics in a bladed assembly inevitably arise during blade...

... carried out in a purpose-built rotating-disc rig, and the Reynolds-averaged Navier-Stokes equations were solved using two-dimensional (axisymmetric) and three-dimensional computational codes, both of which incorporated low-Reynolds-number k -ε turbulence models. The free-vortex flow, which occurs inside...