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Giacomo Zanetti, Giovanna Cavazzini and Alberto Santolin
This paper presents a numerical analysis of the influence of the von Karman vortex shedding at the blade trailing edge on the hydrodynamics of a recently installed small hydro Francis turbine manifesting very loud and high-frequency acoustic pulsations w...
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Jiadong Zeng, Zhitian Zhang, Mingshui Li and Shaopeng Li
A normalized across-wind fluctuating wind load spectrum model is proposed, taking into account the effects of incoming turbulence, the side ratio, vortex shedding, and separation reattachment flow-induced spectral bandwidth changes and high-frequency flu...
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Shiji Zhou, Shengfeng Zhao, Chuangxin Zhou, Yunfeng Wu, Hang Yuan and Xingen Lu
To explore the internal flow mechanism and improve the performance of a supersonic compressor, an efficient global optimization design method was developed for an axial flow compressor and applied in the optimization design of a prototype supersonic comp...
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Bo-Min Bae, Yeon-Soo Kim, Wan-Soo Kim, Yong-Joo Kim, Sang-Dae Lee and Taek-Jin Kim
In the field of agricultural machinery, various empirical field tests are conducted to measure design loads for the optimal design and implementation of tractors. However, conducting field tests is costly and time-consuming, with many constraints on weat...
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Bowen Yan, Yanan Li, Xiao Li, Xuhong Zhou, Min Wei, Qingshan Yang and Xu Zhou
This paper investigates the twisted wind effect on a typical super-tall building (500-m-tall square prism) by conducting pressure model wind tunnel tests. Two twisted wind fields (TWFs) with maximum yaw angles of approximately 30° and 20°, respectively, ...
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Peng Yu, Zhiyuan Hu, Guohua Xu and Yongjie Shi
Due to the small tilt angle, a tiltrotor operates in non-axial flow conditions during shipboard take-off and landing. The non-uniformity of the blade?s air-load is high, resulting in structural deformation with high fluctuation frequency, affecting the r...
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Muhammad Paend Bakht, Zainal Salam, Abdul Rauf Bhatti, Waqas Anjum, Saifulnizam A. Khalid and Nuzhat Khan
This study investigates the potential application of Stateflow (SF) to design an energy management strategy (EMS) for a renewable-based hybrid energy system (HES). The SF is an extended finite state machine; it provides a platform to design, model, and e...
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K. Imasiku, E. Ntagwirumugara
The mining industry in Zambia is energy-intensive, with hydro energy providing the required energy. But other sources of energy may need to be added, because hydro energy is subject to good rain patterns, threatened by the spectre of climate change, as a...
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Tiezhi Sun, Qingmo Xie, Li Zou, Hao Wang and Chang Xu
Cavitation is a typical and unavoidable phenomenon for small waterline ships and high-speed vehicles. It creates a highly complex multiphase flow near the free surface and is primarily represented by the free surface-cavitation interaction. In this paper...
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Hassan Haes Alhelou, Mohamad Esmail Hamedani Golshan, Takawira Cuthbert Njenda and Pierluigi Siano
In the event of a generator loss or disturbance, the power system frequency declines quickly and overall system stability is at risk. During these scenarios, under frequency load shedding is triggered to restore the power system frequency. The main stage...
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