... FS = full scale HPT = high-pressure turbine HS = hot streak HSWT = high-speed wind tunnel ITD = intermediate turbine duct LE = leading edge LPT = low-pressure turbine PA = passage PID = proportional-integral-derivative PLC = programmable logic...

... the flow leaving the high pressure turbine to the low pressure turbine at a larger diameter without any severe loss generating separation or flow disturbances. To reduce costs and weight this turbine duct has to be as short as possible. This results in superaggressive (very high diffusion) S-shaped...

... turbine and a second stator positioned in an s-shaped diffuser. In a numerical investigation Davis et al. ( 11 ) described the effect of shock waves generated by the rotor on the flow field of LP duct and LP stator. Miller et al. ( 12 13 ) experimentally investigated the potential interaction...

... that the flow field is two dimensional and incompressible in the ducts between blade rows although the steady-state density is permitted to change across the blade rows. The resulting stall parameter contains terms that relate to the slope of the pressure rise characteristic of the blade rows and the inertia...

... of the channel walls are also presented. The mass transfer data from the curved wall channels are compared to those from a smooth 4:1 rectangular duct with similar flow parameters. The local mass transfer data are analyzed mainly for the fully developed region, and area-averaged results are presented...

...Anant Shah; Danesh K. Tafti A ribbed square duct ( P ∕ e = 10 , e ∕ D h = 0.10 ) subjected to sand ingestion is studied using large-eddy simulations (LES). Particle sizes of 10 μ m , 50 μ m , and 100 μ m with nondimensional response times (normalized by friction velocity and hydraulic diameter...

... turbines turbulence Coriolis force ducts cooling In engineering applications such as gas turbines and electric generators, characteristics of the flow field, and heat transfer in internal cooling rotating ducts with strong curvature are very important to understand, as the curvature can...

...Evan A. Sewall; Danesh K. Tafti Large eddy simulation of the 180 deg bend in a stationary ribbed duct is presented. The domain studied includes three ribs upstream of the bend region and three ribs downstream of the bend with an outflow extension added to the end, using a total of 8.4 million cells...

... Uncertainties in Single-Sample Experiments ,” Mech. Eng. (Am. Soc. Mech. Eng.) 0025-6501 , 75 , pp. 3 – 8 . 01 10 2004 01 02 2005 jets ducts orifices (mechanical) convection cooling gas turbines pipe flow The continuing pursuit of high inlet temperature in gas turbines...