|
|
|
|
|
Martin Dobrovolný, Vladimír Habán, Jana Tancjurová and Jan Zbavitel
The limited functionality of seals that are used in hydraulic machines to prevent the liquid from leaking into the bearings may result in decrease in machine efficiency and reliability and may cause an accident of the whole hydraulic machine. However, no...
ver más
|
|
|
|
|
|
|
|
|
|
|
V. G. Kuznetsov,D. A. Bosiy,T. I. Kiriluk
Pág. 103 - 109
The authors offer conferencing method for determining the power loss coefficient for the contact network. Authors have received expressions for the equivalent value of loss coefficient for the existing power schemes contact network.
|
|
|
|
|
|
|
|
|
|
|
Onur Dündar, Ismail Hakki Özölçer and Emrah Dogan
The loss coefficient is one of the most critical parameters in computing the hydraulic grade line of sewer systems. The head loss coefficient of a manhole is dependent on various hydraulic and structural characteristics, such as manhole mold, connection ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Maoqing Duan, Qi Liu, Yu Zhang, Feiyan Yuan, Xianzhi Meng, Shilu Zhang and Jun Zhang
The background values of pollutants are becoming increasingly prominent in evaluating water quality and management, and their load and output characteristics are of great significance to the study of changes in the background values. Thus, this paper stu...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jian Chen, Yangyang Tian, Huijie Zhang and Shanju Zhang
The form of the inlet section of aqueducts that connect the upstream channel and the downstream channel affects the flow pattern and head loss. In order to provide a reference for the design of the gradient section of water-transfer channels, a typical t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Joanna Maria Kopania, Wojciech Zakrzewicz, Przemyslaw Kubiak, Adam Mrowicki, Michal Glogowski, Jacek Gralewski, Grzegorz Boguslawski, Kamil Wójciak and Patryk Gaj
The primary goal of this research was to study transmission loss and absorption of fluted PVC panels using experimental and theoretical methods. During these studies, the link between panel size, thickness, transmission loss, and absorption was considere...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jackson Tellez-Alvarez, Manuel Gómez, Beniamino Russo and Marko Amezaga-Kutija
Numerical models concerning inlet systems are run to assess the hydraulic performance of existing or new systems and estimate the flow interchanges between the surface overland and sewer flows. In most programs, these interactions are modelled using the ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yaroslav Doroshenko,Ihor Rybitskyi
Pág. 28 - 34
CFD simulation investigated turbulent flows in equal gas pipeline tees, in which the gas flow completely moves from the main line to the branch. The study was performed for tees of different geometry ? stamped with different bending radii of the transiti...
ver más
|
|
|
|
|
|
|
|
|
|
|
Anna Maria Kozlowska, Øyvind Øksnes Dalheim, Luca Savio and Sverre Steen
This paper presents experimental and theoretical studies on the dynamic effect on the propeller loading due to ventilation by using a simulation model that generates a time domain solution for propeller forces in varying operational conditions. For venti...
ver más
|
|
|
|
|
|
|
|
|
|
|
Péter Csizmadia, Sára Till
Pág. 305 - 311
This study presents a numerical investigation of flow and rheological behaviour of activated sludge. These materials are usually driven by pumps in wastewater treatment plants. Because of the correct sizing of the pipeline systems, which is of great impo...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yuheng Yang, Yang Liu, Shengle Cao, Yufei Cheng
Pág. 1 - 16
The traditional concepts of water resource development and utilization have caused serious hydrological and environmental issues in some regions. In addition, policy issues in China have led to a severe water crisis. The quantitative accounting of water ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yuheng Yang, Yang Liu, Shengle Cao and Yufei Cheng
The traditional concepts of water resource development and utilization have caused serious hydrological and environmental issues in some regions. In addition, policy issues in China have led to a severe water crisis. The quantitative accounting of water ...
ver más
|
|
|
|
|
|
|
|
|
|
|
|
Zhijian Liu, Hao Li, Xinyu Zhang, Guangya Jin and Kewei Cheng
The determinations of heat collection rate and heat loss coefficient are crucial for the evaluation of in service water-in-glass evacuated tube solar water heaters. However, the direct determination requires complex detection devices and a series of stan...
ver más
|
|
|
|
|
|
|
|
|
|
|
Matej Majeric, Nina Verdel, Jan Ogrin, Hans-Christer Holmberg and Matej Supej
Aerodynamic drag is a major cause of energy losses during alpine ski racing. Here we developed two models for monitoring the aerodynamic drag on elite alpine skiers in the technical disciplines. While 10 skiers assumed standard positions (high, middle, t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kun Luo, Zhengmin Wu, Chengmao Cao, Kuan Qin, Xuechen Zhang and Minhui An
To date, mechanized picking of famous tea (bud, one bud one leaf) causes a lot of damage. Manual picking results in high-quality tea but the process is inefficient. Therefore, in order to improve the quality of mechanically harvested tea buds, the study ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Fatima Amin, Rashid Saleem, Tayyab Shabbir, Sabih ur Rehman, Muhammad Bilal and M. Farhan Shafique
This research work proposes a compact four-port multiple-input multiple-output (MIMO) antenna that operates in the whole license free ultra-wideband (UWB) spectrum of 3.1?10.6 GHz. Spatial diversity has been introduced by arranging these antennas in clos...
ver más
|
|
|
|
|
|
|
|
|
|
|
Saulo Folharini, António Vieira, António Bento-Gonçalves, Sara Silva, Tiago Marques and Jorge Novais
Protected areas (PA) play an important role in minimizing the effects of soil erosion in watersheds. This study evaluated the performance of machine learning models, specifically support vector machine with linear kernel (SVMLinear), support vector machi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yongning He, Huihong Wu, Yeqiang Zhang, Tingxiang Jin and Ziwen Xing
An organic Rankine cycle (ORC) system is an efficient technology for generating power from low-grade thermal sources. Twin screw expanders are widely used in ORC systems. Pressure loss caused by a suction port influences the suction process and the syste...
ver más
|
|
|
|
|
|
|
|
|
|
|
Antoni Sánchez-Ortiz, Miriam Lampreave and Maria Assumpta Mateos
Climate variability in Mediterranean viticultural areas, primarily attributed to climate change, will significantly impact water requirements, consequently leading to changes in irrigation management. The primary aim of this study was to assess the respo...
ver más
|
|
|
|
|
|