...Kalyanjit Ghosh; R. J. Goldstein Heat (mass) transfer experiments are conducted to study the effect of an inlet skew on a simulated gas-turbine blade placed in a linear cascade. The inlet skew simulates the relative motion between rotor and stator endwalls in a single turbine stage. The transverse...

...M. Papa; V. Srinivasan; R. J. Goldstein Mass transfer measurements on the endwall and blade suction surfaces are performed in a five-blade linear cascade with a high-performance rotor blade profile. The effects of purge flow from the wheelspace cavity entering the hot gas path are simulated...

... heat transfer mass transfer turbines Part I of this paper described the adjustment of all cooling flow rates in unison to investigate the combined influence of vane and purge cooling. To further separate the effects of each individual cooling circuit, the flow rate from each circuit is varied...

... 2011 aerodynamics cooling engines mass transfer transonic flow turbines Cooling plays a critical role in turbine aerodynamics, heat-transfer, life-durability, and efficiency. However, cooling designs have been difficult to verify experimentally under realistic operating conditions...

... mass transfer transonic flow valves The subject of film cooling and the manner in which the aerodynamics are influenced by the injected flow is not a new area of research. Many film cooling studies have been performed, typically using flat plate and cascade facilities. While these studies...

... and turning of the mainstream flow at the contoured surface, resulting in a reduction of the local blowing ratios near the pressure side leading edge. blades coolants gas turbines mass transfer nozzles From a simple thermodynamic analysis of a gas turbine, it is apparent that raising the gas...

... process and the interaction between the particles and components are discussed. Heat and mass transfer models are built for two ideal conditions. Results from a case study reveal that the melting rate for the ice particle covering with water film is much higher than that for bare particles. Those ice...

... 2009 19 10 2010 19 10 2010 blades channel flow cooling finite volume methods gas turbines mass transfer Navier-Stokes equations turbulence Gas turbines find a broad range of applications, e.g., in land-based power generation in stationary gas turbines as well...

...S. Olson; S. Sanitjai; K. Ghosh; R. J. Goldstein This study investigates the effect of wakes in the presence of varying levels of background freestream turbulence on the heat (mass) transfer from gas turbine blades. Measurements using the naphthalene sublimation technique provide local values...

... nonequilibrium thermodynamics multiphase flow interphase slip surface film droplet spectrum droplet splashing airfoil flow-angle deviation aerodynamics aerospace components aerospace engines aircraft blades calibration compressors evaporation gas turbines mass transfer nozzles 19 10...

... drag fans flow simulation jet engines Mach number mass transfer nozzles numerical analysis rotors 1 An important consideration in the design of nacelles for commercial aircraft engines is the propulsion system drag at engine-out “windmill” conditions, where the fan rotor...

...Zhihong Gao; Diganta Narzary; Shantanu Mhetras; Je-Chin Han The influence of incidence angle on film-cooling effectiveness is studied for a cutback squealer blade tip. Three incidence angles are investigated − 0 deg at design condition and ± 5 deg at off-design conditions. Based on mass transfer...

...Eashwar Sethuraman; Sumanta Acharya; Dimitris E. Nikitopoulos The paper presents an experimental study of heat∕mass transfer coefficient in 4:1 aspect ratio smooth channels with nonuniform cross sections. Curved leading and trailing edges are studied for two curvatures of 9.06 m − 1 (0.23 in. − 1...

...Hyung Hee Cho; Dong Ho Rhee; R. J. Goldstein The present study investigates the local heat (mass) transfer characteristics of flow through perforated plates. Two parallel perforated plates were placed, relative to each other, in either staggered, in line, or shifted in one direction. Hole length...

...Kyung Min Kim; Suk Hwan Park; Yun Heung Jeon; Dong Hyun Lee; Hyung Hee Cho The present study investigates the effects of secondary flow due to angled rib turbulators on the heat/mass transfer in the square channels with channel rotation and bleed flow. The angle of attack of the angled ribs was 45...

... each blockage and all of the holes had rounded edges. Local heat (mass) transfer was measured and overall heat (mass) transfer results were obtained, on the exposed surfaces of one of the walls downstream of the two blockages, for Reynolds numbers (based on the hydraulic diameter of the channel...

.../heat transfer coefficients on the slot and on the land surfaces were compared both experimentally and numerically. 05 07 2006 04 09 2006 heat transfer mass transfer aerodynamics gas turbines design engineering turbulence computational fluid dynamics cooling sublimation...

...Yun Heung Jeon; Suk Hwan Park; Kyung Min Kim; Dong Hyun Lee; Hyung Hee Cho The present study investigates the effects of bleed flow on heat/mass transfer and pressure drop in a rotating channel with transverse rib turbulators. The hydraulic diameter ( D h ) of the square channel is 40.0 mm . 20...

...Dong-Ho Rhee; Hyung Hee Cho The local heat/mass transfer characteristics on the tip and shroud were investigated using a low speed rotating turbine annular cascade. Time-averaged mass transfer coefficients on the tip and shroud were measured using a naphthalene sublimation technique. A low speed...

...Dong-Ho Rhee; Hyung Hee Cho The present study focuses on local heat/mass transfer characteristics on the near-tip region of a rotating blade. To investigate the local heat/mass transfer on the near-tip surface of the rotating turbine blade, detailed measurements of time-averaged mass transfer...