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Mudhar A. Al-Obaidi, Farhan Lafta Rashid, Arman Ameen, Mohammed Kadhom and Iqbal M. Mujtaba
Due to its high pollutant rejection and low energy usage, the spiral wound module of reverse osmosis (RO) process is the most commonly used technology utilised in wastewater treatment. For a spiral wound module, the presence of a feed spacer is important...
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Héctor Rubén Díaz Ojeda, Sebastian Oyuela, Roberto Sosa, Alejandro Daniel Otero and Francisco Pérez Arribas
Naval hydrodynamics typically focus on reducing ship resistance, which can be achieved by incorporating a bulbous bow. This feature is commonly used in the merchant fleet and smaller vessels, such as fishing boats, to minimize wave-making resistance. How...
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Xuan Zhao, Guoqiang Gao, Minshun Wan and Juchuan Dai
An accurate formula for calculating the pressure loss in concrete pumping plays a significant guiding role in the design and service process of pump trucks. Based on the flow characteristics of concrete pumping, a straight pipe one-dimensional model for ...
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Shouyuan Zhang, Xin Wang and Haitao Ma
With the widespread use of sector gates in tidal river locks, there is a growing interest in the operating force during the gate operation. This study investigates the characteristics of operating forces in a sector gate hydraulic cylinder system using p...
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Yuan Wei, Renliang Chen, Ye Yuan and Luofeng Wang
This study assesses the influence of engine dynamic characteristics on helicopter handling quality during hover and low-speed forward flight. First, we construct the helicopter?engine coupling model (HECM) based on the power-matching relationship between...
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Zhiyuan Hu, Peng Yu, Guohua Xu, Yongjie Shi, Feng Gu and Aijun Zou
Tiltrotors permit aircrafts to operate vertically with lift, yet convert to ordinary forward flight with thrust. The challenge is to design a tiltrotor blade yielding maximum lift and thrust that converts smoothly without losing integrity or efficiency. ...
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Cundong Xu, Junjiao Tian, Guoxia Wang, Haidong Lian, Rongrong Wang and Xiaomeng Hu
The vortices, backflow, and siltation caused by sediment-laden flow are detrimental to the safe and efficient operation of pumping stations. To explore the effects of water?sediment two-phase flow on the velocity field, vorticity field, and sediment dist...
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Li Zhang, Jianqun Yu, Qiang Zhang, Chuanxin Liu and Xvwen Fang
Influenced by the maturity and material properties, fresh corn has problems, such as low picking rate, high energy consumption and high damage rate during mechanized harvesting. For the above problems, a bionic reverse picking header was designed using t...
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Guoqing Zhang, Junxin Li, Huimin Zeng, Wan Li, Qiang Wang and Aibing Huang
The femur supports the entire body weight, and any damage or necrosis to this bone can significantly impair normal walking. Therefore, repairing the femur is essential to restoring its function. However, due to variations in human bone structure, standar...
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Oscar Ulises Espinosa Barcenas, Jose Gabriel Quijada Pioquinto, Ekaterina Kurkina and Oleg Lukyanov
The aircraft conceptual design step requires a substantial number of aerodynamic configuration evaluations. Since the wing is the main aircraft lifting element, the focus is on solving direct and reverse design problems. The former could be solved using ...
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