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Keywords: design
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Journal Articles
Article Type: Research-Article
J. Turbomach. August 2018, 140(8): 081007.
Paper No: TURBO-18-1048
Published Online: July 26, 2018
...Matthias Hüls; Lars Panning-von Scheidt; Jörg Wallaschek A major concern for new generations of large turbine blades is forced and self-excited (flutter) vibrations, which can cause high-cycle fatigue (HCF). The design of friction joints is a commonly applied strategy for systematic reduction...
Journal Articles
Article Type: Research-Article
J. Turbomach. August 2018, 140(8): 081006.
Paper No: TURBO-17-1229
Published Online: July 26, 2018
...Georgios Ntanakas; Marcus Meyer; Kyriakos C. Giannakoglou In turbomachinery, the steady adjoint method has been successfully used for the computation of derivatives of various objective functions with respect to design variables in gradient-based optimization. However, the continuous advances...
Journal Articles
Article Type: Research-Article
J. Turbomach. August 2018, 140(8): 081002.
Paper No: TURBO-18-1006
Published Online: July 24, 2018
.... Manuscript received January 12, 2018; final manuscript received June 26, 2018; published online July 24, 2018. Assoc. Editor: Li He. 12 01 2018 26 06 2018 Fan Design Compressor Turbine aerodynamic design Turbomachinery blading In a near future, with the concept of more...
Journal Articles
Article Type: Research-Article
J. Turbomach. July 2018, 140(7): 071007.
Paper No: TURBO-18-1049
Published Online: June 14, 2018
...Jason Town; Douglas Straub; James Black; Karen A. Thole; Tom I-P. Shih Effective internal and external cooling of airfoils is key to maintaining component life for efficient gas turbines. Cooling designs have spanned the range from simple internal convective channels to more advanced double-walls...
Journal Articles
Article Type: Research-Article
J. Turbomach. July 2018, 140(7): 071002.
Paper No: TURBO-17-1235
Published Online: May 17, 2018
... is referred to as pressure recovery. Since total pressure losses and construction costs increase drastically with diffuser length, it is strongly preferred to design shorter diffusers with steeper opening angles. However, these designs are more susceptible to boundary layer separation. In this paper...
Journal Articles
Article Type: Research-Article
J. Turbomach. May 2018, 140(6): 061007.
Paper No: TURBO-17-1197
Published Online: April 30, 2018
... , “ Assessment of Unsteady Flows in Turbines ,” ASME J. Turbomach. , 114 ( 1 ), pp. 79 – 90 . 10.1115/1.2928001 [2] Paniagua , G. , and Denos , R. , 2007 , “ Unsteadiness in HP Turbines ,” Advances in Turbomachinery Aero-Thermo-Mechanical Design Analysis (VKI Lecture Series 2007-02), The von...
Journal Articles
Article Type: Research-Article
J. Turbomach. May 2018, 140(6): 061006.
Paper No: TURBO-17-1217
Published Online: April 30, 2018
...; final manuscript received January 3, 2018; published online April 30, 2018. Editor: Kenneth Hall. 20 11 2017 03 01 2018 Cavity flows Impact on cavity leaking flows on performance Turbomachinery blading Leaking flows Design Tip leakage flow is a typical flow phenomenon...
Journal Articles
Article Type: Research-Article
J. Turbomach. May 2018, 140(5): 051011.
Paper No: TURBO-17-1216
Published Online: April 6, 2018
... of pre-shock pressure waves at the inlet of the compressor. The optimization was performed at three operating points on the 100% speed line in order to maintain choke mass flow and surge margin. At the design point, the specific work input was kept equal. The baseline impeller was designed by using ruled...
Journal Articles
Article Type: Research-Article
J. Turbomach. May 2018, 140(5): 051001.
Paper No: TURBO-16-1156
Published Online: February 27, 2018
...Fangyuan Lou; John C. Fabian; Nicole L. Key This paper introduces a new approach for the preliminary design and aerothermal analysis of centrifugal impellers using a relative diffusion effectiveness parameter. The relative diffusion effectiveness is defined as the ratio of the achieved diffusion...
Journal Articles
Article Type: Research-Article
J. Turbomach. April 2018, 140(4): 041009.
Paper No: TURBO-17-1195
Published Online: February 21, 2018
...; final manuscript received November 3, 2017; published online February 21, 2018. Editor: Kenneth Hall. 22 10 2017 03 11 2017 Compressor stall Design Surge Turbomachinery blading Operability The steady CFD is capable of simulating the overall performance and the main flow...
Journal Articles
Article Type: Research-Article
J. Turbomach. April 2018, 140(4): 041007.
Paper No: TURBO-16-1101
Published Online: February 13, 2018
... of the nonaxisymmetric flow control method, several nonaxisymmetric vaned diffusers are designed to make the flow field uniform, which are believed to be beneficial for compressor stability. Finally, an experiment is carried out to validate the positive effects of the nonaxisymmetric vaned diffuser for stability...
Journal Articles
Article Type: Research-Article
J. Turbomach. April 2018, 140(4): 041006.
Paper No: TURBO-17-1155
Published Online: February 6, 2018
...Penghao Duan; Choon S. Tan; Andrew Scribner; Anthony Malandra The measured loss characteristic in a high-speed cascade tunnel of two turbine blades of different designs showed distinctly different trends with exit Mach number ranging from 0.8 to 1.4. Assessments using steady Reynolds-averaged...
Journal Articles
Article Type: Research-Article
J. Turbomach. April 2018, 140(4): 041003.
Paper No: TURBO-17-1193
Published Online: January 17, 2018
...Pranay Seshadri; Shahrokh Shahpar; Paul Constantine; Geoffrey Parks; Mike Adams Turbomachinery active subspace performance maps are two-dimensional (2D) contour plots that illustrate the variation of key flow performance metrics with different blade designs. While such maps are easy to construct...
Journal Articles
Article Type: Research-Article
J. Turbomach. January 2018, 140(1): 011010.
Paper No: TURBO-17-1173
Published Online: October 31, 2017
...Hamid Hazby; Chris Robinson; Michael Casey; Daniel Rusch; Rene Hunziker The detailed design of the inducer of a high pressure ratio transonic radial compressor impeller with a design inlet tip relative Mach number of 1.4 is considered. Numerical analysis has been used to compare a datum impeller...
Journal Articles
Article Type: Research-Article
J. Turbomach. January 2018, 140(1): 011005.
Paper No: TURBO-17-1147
Published Online: October 25, 2017
... in the 1D performance prediction of the six compressor stages is demonstrated. In addition, a number of design recommendations are presented to ensure that the detrimental effects associated with the presence of impeller exit recirculation can be minimized. Subscripts g = gauge h = hub max...
Journal Articles
Article Type: Research-Article
J. Turbomach. December 2017, 139(12): 121007.
Paper No: TURBO-17-1106
Published Online: October 3, 2017
... October 3, 2017. Editor: Kenneth Hall. 06 08 2017 30 08 2017 Boundary layer development Fluid dynamics Measurement techniques Turbine blade Turbomachinery blading Measurement advancements Heat transfer phenomena Compressor Turbine components Gas turbine engines Design...
Journal Articles
Article Type: Research-Article
J. Turbomach. December 2017, 139(12): 121008.
Paper No: TURBO-17-1122
Published Online: October 3, 2017
... performed on the turbine nozzle. Guided by the visualization and numerical simulation, grooves were designed on the nozzle surface where the shock wave was originated and numerical simulations were performed to investigate the influence of grooves on the shock wave characteristics. Results indicate...
Journal Articles
Article Type: Research-Article
J. Turbomach. December 2017, 139(12): 121001.
Paper No: TURBO-17-1085
Published Online: September 26, 2017
...John D. Denton Turbomachinery design systems are usually the jealously guarded property of large companies, and the author is not aware of any for which the source code is freely available. This paper is aimed providing a freely available system that can be used by individuals or small companies...
Journal Articles
Article Type: Research-Article
J. Turbomach. November 2017, 139(11): 111011.
Paper No: TURBO-17-1102
Published Online: September 19, 2017
... 16 08 2017 Computational fluid dynamics Fluid dynamics Heat transfer Turbomachinery blading Film cooling Heat transfer phenomena Compressor Turbine components Gas turbine engines Design The continuous efforts for improving efficiency and thermal performance in modern aero...
Journal Articles
Article Type: Research-Article
J. Turbomach. November 2017, 139(11): 111008.
Paper No: TURBO-17-1020
Published Online: August 29, 2017
...Junsok Yi; Luigi Capone Temporal variation of components' performance is becoming a crucial parameter in turbomachinery design process. The main physical mechanism driving the time-dependent behavior is the unsteady bladerow interaction as stator–rotor relative motion due to rotating frame...