... shaped holes internal cooling adjoint optimization additive manufacturing Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-83436 EVALUATION OF ADJOINT OPTIMIZED HOLES - PART I BASELINE PERFORMANCE...

... swirl gas turbine internal cooling inlet shape Abstract In the present work a simulation is conducted by CFD to predict the cooling performance in a chamber with a swirl motion using nine shapes of injection entrances. The injection entrances are with different cross sections...

... cooling structures was employed. The internal cooling structure includes leading edge impingement cooling, U-shaped serpentine passage with/without turbulence ribs at blade mid-chord and trailing edge pin fins. The external cooling structure includes film holes near the leading edge stagnation point...

... Abstract The purpose of this effort is to screen several internally cooled airfoil designs that could be fabricated when additive manufacturing becomes a viable alternative for industrial gas turbine applications. This effort is part of a larger effort to increase gas turbine performance...

..., the rotation will enhance the local and overall thermal performance of the U-channel, and the effect of deflection angle on the thermal performance of U-channel keep the same at different rotations numbers. internal cooling U-channel heat transfer rotating effect Proceedings of ASME Turbo Expo 2022...

...Abstract Abstract Few studies in the open literature have studied the effect of thermal barrier coatings when used in combination with shaped hole film cooling and enhanced internal cooling techniques. The current study presents RANS conjugate heat transfer simulations that identify trends...

... and to discuss the effects of hole geometric variables on both pressure losses Keywords: Multi-objective optimization; internal cooling; and heat transfer enhancement. A fully automatic multi-objective semi-attached ribs; numerical simulation. genetic algorithm based on the Non-dominated Sorted Genetic Algorithm...

... b Bulk thermal performance for flow Reynolds numbers ranging from c Cross-section Re = 40,000-80,000. H High L Low Keywords: Internal Cooling, Partial Height, Strip Fin, n Local Thermal Performance, Friction Loss, Heat Transfer p Projected Enhancement w Wall NOMENCLATURE Copyright © 2021 by ASME...

... performed based on the CHT calculation results. Average 2 Outer wall temperature within the solid region of the optimized blade Calculation region decreased 11.1K as compared to the original case. Boundary of calculation region D Dirichlet boundary Keywords: Internal cooling; Adjoint method; Heat...

...Abstract Abstract Radial impellers are not internally-cooled because of the manufacturing challenge. The conventional manufacturing method for internally-cooled components is an investment cast process using a ceramic core to create internal passages. This approach has been developed for axial...

...Abstract Abstract Leading edge multi-channel double wall design, a novel internal cooling structure, has been put forward recently to enable higher overall cooling effectiveness with less penalty of coolant mass flow and pressure loss. Our previous work has proved the advantages of the design...

... Effects of Jetting Orifice Geometry Parameters and Channel Reynolds Number on Bended Channel Cooling for a Novel Internal Cooling Structure Wei He1, Qinghua Deng1,2 Juan He1, Tieyu Gao1, Zhenping Feng1 1. Shaanxi Engineering Laboratory of Turbomachinery and Power Equipment, Institute...

.... Aeroderivative HPT Blade Internal Cooling Compressible Flow Network Analysis Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air GT2008 D Pipe internal diameter Fa Thermal expansion factor Ri Exit cooling section, i=1,2,3 Re Reynolds number m Mass flow Mach Mach number Y Expansion factor...

... in the temperature profile and transient start time of each flow. The technique is applied to the analysis of the heat transfer within a low aspect ratio impingement channel with initial cross flow. Transient Heat Transfer Internal Cooling Turbine Proceedings of RBO EXPO 2002 002, Amsterdam T-30533...

... E% %56# U 9 C $ 4MM '3/ 0 9 33 =B 6 B B # C D 5 high fogging internal cooling wet compression fogging power augmentation High fogging is a power augmentation device where water...

... could be obtained when the straight divider wall was designed into zigzag divider wall. internal cooling trailing edge divider wall ejection holes Proceedings of ASME Turbo Expo 2006 designed into zigzag divider wall. Keywords: internal cooling; trailing edge; divider wall; ejection holes...

... 11 09 2008 Measurements using a novel heat flux sensor were performed in an internal ribbed channel representing the internal cooling passages of a gas turbine blade. These measurements allowed for the characterization of heat transfer turbulence levels and unsteadiness not previously...