Abstract It is significant to improve the machining accuracy of film cooling holes on aero-engine turbine blades. This paper presents a method correct position In this method, pre-positioning algorithm and precise positioning are proposed. The introduces blade structure information. algorithm, 3D coordinate transformation, ∠B ∠C 5-axis machine tool updating, iteration points creating based norm...

The use of phase-changing materials (PCMs) is a practical and powerful way buffering thermal fluctuations maintaining the isothermal nature storage process. In this study, melamine formaldehyde microcapsules with paraffin cores were used as PCMs; pullulan films PCMs prepared by film-casting method; composite analysed regard to their chemical structure, properties, stability, recyclability. Unif...

To better understand the mechanism influencing periodic lattice structures in gas turbine blade cooling, these numerical simulations present a systematic comparison of effects cases involving pin-fin, Kagome, and BCC arrays on film-cooling effectiveness under three blowing ratios (i.e., M = 0.5, 1.0, 1.5). The results indicate that introduction array improves within whole streamwise range, espe...