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James Brind
This paper derives and validates an analytical model for acoustic boundary conditions on a can-annular gas turbine combustion system composed of discrete cans connected to an open annulus upstream of a turbine. The analytical model takes one empirical pa...
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Robin M. Robrecht and Peter F. Pelz
Grooved liquid annular seals have a significant influence on the design of turbomachines. Corresponding lubrication film models need to account for the different friction behavior of the grooves compared to plain seals. However, there is a lack of reliab...
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V. V. Novodvorskyi, G. K. Ivanitsky
Pág. 37 - 46
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V. V. Novodvorskyi, G. K. Ivanitskyi, N. P. Shved
Pág. 86 - 95
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Zhongqi Luo, Hexia Huang, Huijun Tan, Gang Liang, Jinghao Lv, Yuwen Wu and Liugang Li
In this paper, the transient flow simulation in an annular isolator under rotating feedback pressure perturbations simplified from the rotating denotation wave (RDW) is performed. The instantaneous flow characteristics and the self-similarity of the isol...
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Chunjie Wang, Linghao Guo, Peng Chen, Qiang Fu and Lin Cui
To sustainably power ocean sensors by harvesting ocean wave energy, an annular electromagnetic generator (A-EMG) based on the principle of Faraday electromagnetic induction is proposed in this paper. The specific structure and working principle of the ge...
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Peter M. Ritzler, Clemens K. Weiss and Bernhard C. Seyfang
Due to the importance of process intensification, modeling of Annular Centrifugal Contactors (ACCs) is becoming of increasing interest. By the current state of scientific knowledge, universal modeling without high computing power of these complex apparat...
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Roland Rückert and Dieter Peitsch
The present paper investigates the aerodynamic performance of a cantilevered tandem stator based on experiments conducted within a high speed annular test rig at the Technische Universitaet Berlin. A tandem blade in this context describes a double rowed ...
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Faraz Kiarasi, Masoud Babaei, Kamran Asemi, Rossana Dimitri and Francesco Tornabene
The present work aims at investigating the hygrothermal effect on the natural frequencies of functionally graded (FG) annular plates integrated with piezo-magneto-electro-elastic layers resting on a Pasternak elastic foundation. The formulation is based ...
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Bo Sung Kim, O-il Kwon, Yong Hyuk Choi and Joon Kyu Lee
Estimating the performance of foundations on rock mass is essential in designing buildings. Stability assessment of weathered rocks under foundation load is a complicated task if there is an internal opening within the foundation. This study applies fini...
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Roman G. Frank, Christian Wacker and Reinhard Niehuis
Variable inlet guide vanes (VIGVs) are most commonly used as the major control unit of integrally geared centrifugal compressors (IGCCs). In order to enhance the efficient operating range of the compressor, the loss mechanisms and utilization limits of s...
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Xiao Cui and Boqi Jia
The linear instability of an annular liquid jet with a radial temperature gradient in an inviscid gas steam is investigated theoretically. A physical model of an annular liquid jet with a radial temperature gradient is established, dimensionless governin...
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Mingjie Zhang, Jiangang Yang, Wanfu Zhang and Qianlei Gu
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Kai Xu, Gang Wang, Luyao Zhang, Liquan Wang, Feihong Yun, Wenhao Sun, Xiangyu Wang and Xi Chen
In this study, an annular jet pump optimization method is proposed based on an RBF(Radial Basis Function) neural network model and NSGA-II(Non-Dominated Sorting Genetic Algorithm) optimization algorithm to improve the hydraulic performance of the annular...
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Fengqin Li, Lulu Zhai, Baoling Cui, Jia Guo and Guoyou Chen
Many annular seals suffer eccentricity because of rotor?stator misalignment or the deflection of a flexible rotor, which has a strong influence on the vibration characteristics and stability of rotating machines. In this article, a transient CFD method b...
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Kirill Trapezon,Alexandr Trapezon
Pág. 26 - 33
The paper reports an algorithm to analytically solve one of the problems in the mechanics of elastic bodies, which is associated with studying the natural vibrations of a composite two-stage plate whose concave part is smoothly aligned with the part of a...
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Kai Xu, Gang Wang, Liquan Wang, Feihong Yun, Wenhao Sun, Xiangyu Wang and Xi Chen
Jet pump efficiency heavily relies on the geometrical parameters of the pump design and parameter global optimization in the full variable space is still a big challenge. This paper proposed a global optimization method for annular jet pump design combin...
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Sergey V. Isaenkov, Ivan S. Vozhakov, Mikhail V. Cherdantsev, Dmitry G. Arkhipov and Andrey V. Cherdantsev
The complex wave structure of annular gas?liquid flow with disturbance waves and liquid entrainment is a result of the evolution of high-frequency initial waves, appearing at the very inlet of the flow, prior to the hydrodynamic stabilization of liquid f...
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Roberto Agromayor, Bernhard Müller and Lars O. Nord
Annular diffusers are frequently used in turbomachinery applications to recover the discharge kinetic energy and increase the total-to-static isentropic efficiency. Despite its strong influence on turbomachinery performance, the diffuser is often neglect...
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Giannetta Fusco, Yuri Cotroneo and Giuseppe Aulicino
Operational analyses and re-analyses, provided by ECMWF for the period 1972?2015, were used to investigate the behaviour of the surface heat fluxes between ocean and atmosphere, estimated via empirical formulae, over the Ross and Weddell Seas. The presen...
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