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Tunbiao Wu, Ronghui Li, Qinglong Chen, Guiyuan Pi, Shijie Wan and Qiao Liu
A methodology of mathematical testing is proposed for a ship with twin azimuth thrusters based on numerical calculations. An unmanned surface vessel (USV) powered by two azimuth thrusters is considered, which is a model-scale configuration. The Ship Mane...
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Ersen Huang, Hongjun Ke and Huanhuan Hu
In this paper, a fast construction method for a composite girder cable-stayed bridge is proposed. The method is used on the Xiangsizhou Bridge, and it complies with all bridge rules while reducing the entire construction time of the bridge by 4 months.
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Krzysztof Kluszczynski and Zbigniew Pilch
The paper is focused on magnetorheological (MR) clutches applied in industrial drive systems working in a steady continuous-duty state. The main goal of the carried out numerical and analytical analyses oriented towards electrical power consumption, copp...
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Kornvisith Silarom and Yoshimichi Yamamoto
In very shallow areas, the frequency by which coastal structures (like dikes and seawalls) are directly broken by large wave forces is low because large waves are broken in deeper areas. The main cause for such destruction is ground scour in front of the...
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Jianguo Zhao, Yang Yu, Hao Xu, Rongtang Zhang, Yuxi Ma and Jialiang Li
Numerical seismic wave field simulation is essential for studying the dynamic responses in semi-infinite space, and the absorbing boundary setting is critical for simulation accuracy. This study addresses spherical waves incident from the free boundary b...
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Anton Karvatskii,Taras Lazariev,Serhii Leleka,Ihor Mikulionok,Olena Ivanenko
Pág. 65 - 76
An assessment of the feasibility of using the existing equipment of a rotary kiln cooler drum for heat treatment of a carbon-containing filler to produce synthesis gas using production waste in the form of a dust fraction of heat-treated petroleum coke o...
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Beate Wörz, Mark Wieler, Viola Dehe, Peter Jeschke and Michael Rabs
This paper presents the results of integral heat transfer measurements taken in a square ribbed cooling channel configuration for evaluating heat transfer and turbulent flow characteristics in convective cooled gas turbine blades and draws a comparison w...
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Shiming Hong, Guangjie Peng, Dehui Yu, Hao Chang and Xikun Wang
Tee pipes are widely utilized in pipeline transportation, especially in subsea production systems and the chemical industry. The purpose of this research is to study the influences of gravity direction, conveying parameters and particle properties on the...
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Yu Wang, Honghua Rao, Zhengyuan Liu, Kaihua Liu, Bo Zhou and Guiyong Zhang
The Volume of Fluid (VOF) method is used in two-phase fluid flow problems of ship hydrodynamic calculations, to capture the motion and distribution of the gas?liquid free surface. To ensure solution stability and accuracy, numerical simulations typically...
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Franti?ek Sejda, Karel Frydrý?ek, Leopold Pleva, Martin Pompach, Josef Hlinka, Marek Sadílek, Zuzana Murcinková, Pavel Krpec, Miroslav Havlícek, Roman Madeja, Jana Pometlová, Oldrich Ucen and Kamila Dostálová
The presented article investigates the biomechanics of the calcaneal nail C-NAILTM by numerical calculations and, partially, experimentally. This nail is widely used in trauma and orthopaedics. A numerical model of implants directly interacting with the ...
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M. M. Biliaiev,M. O. Oladipo
Pág. 22 - 29
Purpose. The scientific work is concentrated on development of 3D, 2D numerical models for the prediction of atmospheric pollution during transport of bulk cargo in the railway car. Methodology. To solve this problem numerical models were developed, base...
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Y. Y. Luchko,M. I. Ignatishin
Pág. 161 - 166
In this article the numerical and analytical methods of calculation of the stressed-and-strained state of bridge constructions are considered. The task on increasing of reliability and accuracy of the numerical method and its solution by means of calcula...
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Tomasz Gajewski and Pawel Skiba
The main goal of this work is to combine the usage of the numerical homogenization technique for determining the effective properties of representative volume elements with artificial neural networks. The effective properties are defined according to the...
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Wenhui Yan, Zhaozheng Sun, Junwei Zhou, Kun Zhang, Jiahui Wang, Xiao Tian and Junqian Tian
One of the most commonly used techniques in aerospace engineering is the RANS (Reynolds average Navier?Stokes) approach for calculating the transonic compressor flow field, where the accuracy of the computation is significantly affected by the turbulence...
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Pavel Makeev, Yuri Ignatkin and Alexander Shomov
Numerical studies of the aerodynamic characteristics of the coaxial main rotor of the Kamov Ka-32 helicopter in steep descent modes, including the area of the vortex ring state (VRS) modes, have been performed. Used in this paper is an original free vort...
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Maxim Protasov, Kirill Gadylshin, Dmitry Neklyudov and Ludek Klimes
This study considers the full waveform inversion (FWI) method based on the asymptotic solution of the Helmholtz equation. We provide frequency-dependent ray tracing to obtain the wave field used to compute the FWI gradient and calculate the modeled data....
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Valeriy Zapryagaev, Ivan Kavun and Nikolay Kiselev
Using the example of studying the supersonic underexpanded jet initial section, the issue of interpreting the experimental visualization data and Pitot pressure measurement data using the results of numerical calculations (2d RANS k-? SST) is discussed. ...
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Yan Xing-Kaeding and Apostolos Papanikolaou
The present study deals with the local optimization of the stern area and of the propulsive efficiency of a battery-driven, fast catamaran vessel. The adopted approach considers a parametric model for the catamaran?s innovative transom stern and a QCM (Q...
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Valeriy F. Nikitin,Yurii G. Filippov,Lyuben I. Stamov,Elena V. Mikhalchenko
Pág. 76 - 85
A rotating detonation engine (RDE) combustion chamber was modeled in the work numerically using 3D geometry. The RDE is a new type of engines capable to create higher thrust than the traditional ones, which are based on the combustible mixture deflagrati...
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Andrei Y. Gorchakov
Pág. 49 - 53
In this paper, we consider the implementation of the three-pass method of fast automatic differentiation. Adding one more pass to the standard 2-pass method leads to a significant decrease in the consumption of RAM, with an insignificant (25%) increase i...
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