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Prateek Kumar Singh, Xiaonan Tang and Hamidreza Rahimi
Numerous sources of overtopping and flood events suggest different cross-sectional land characteristics of the river and urban river water systems. Multiple stages of floodplains in compound channels are viable in urban areas to facilitate bank slope sta...
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Omar Ahmed Mahfoze, Wendi Liu, Stephen M. Longshaw, Alex Skillen and David R. Emerson
As part of a wider project to understand the applicability of utilising slosh-based damping for wing-like structures, simulations of partially filled tanks subjected to harmonically oscillating and vertical motion are presented. The Volume of Fluid model...
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Xinying Liu, Anna Abà, Pierluigi Capone, Leonardo Manfriani and Yongling Fu
A concept of a new energy management system synthesizing meteorological and orographic influences on airplane safety envelope was developed and implemented at the ZHAW Centre for Aviation. A corresponding flight simulation environment was built in a Rese...
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Ilan Robin, Anne-Claire Bennis and Jean-Claude Dauvin
Biofouling is an important factor to consider when calculating the energetic efficiency of tidal farms. Despite the fact that biofouling effects have been widely investigated in the past for naval applications, very few studies concern tidal turbines. Th...
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Azin Hosseinzadeh and Amir Keshmiri
Due to a rapid increase in urbanisation, accurate wind microclimate assessment is of crucial importance. Evaluating wind flows around buildings is part of the planning application process in the design of new developments. In this study, computational fl...
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Yuri Frey Marioni, Enrique Alvarez de Toledo Ortiz, Andrea Cassinelli, Francesco Montomoli, Paolo Adami and Raul Vazquez
In this paper, we investigate the feasibility of using DNS data and machine learning algorithms to assist RANS turbulence model development. High-fidelity DNS data are generated with the incompressible Navier?Stokes solver implemented in the spectral/hp ...
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Ville M. Viitanen, Tuomas Sipilä, Antonio Sánchez-Caja and Timo Siikonen
The present method can be applied to study characteristics of hydrodynamic cavitation and its consequences, such as performance variations and noise, in propellers and rotating turbomachinery. Compressible formulation of the numerical method ensures a mo...
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Arsenios E. Chatzimichailidis, Christos D. Argyropoulos, Marc J. Assael and Konstantinos E. Kakosimos
Air pollution is probably the single largest environment risk to health and urban streets are the localized, relevant hotspots. Numerous studies reviewed the state-of-the-art models, proposed best-practice guidelines and explored, using various software,...
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Zegao Yin, Yingnan Feng, Yanxu Wang, Chengyan Gao and Ningning Ma
In order to investigate the dissolved oxygen increase caused by air suction in a horizontal Venturi flow with two holes, a 3-D computational fluid dynamics model was used to explore the water and bubble mixture flow, coupled with a dissolved oxygen trans...
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Zegao Yin, Yingnan Feng, Yanxu Wang, Chengyan Gao and Ningning Ma
In order to investigate the dissolved oxygen increase caused by air suction in a horizontal Venturi flow with two holes, a 3-D computational fluid dynamics model was used to explore the water and bubble mixture flow, coupled with a dissolved oxygen trans...
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Zinon Vlahostergios
In the current work a detailed investigation and a performance assessment of two eddy viscosity and two Reynolds stress turbulence models for modelling the transitional flow on a double circular arc (DCA) compressor blade is presented. The investigation ...
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Zinon Vlahostergios
In the current work a detailed investigation and a performance assessment of two eddy viscosity and two Reynolds stress turbulence models for modelling the transitional flow on a double circular arc (DCA) compressor blade is presented. The investigation ...
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Stefano Putzu, Francesco Enrile, Giovanni Besio, Andrea Cucco, Laura Cutroneo, Marco Capello and Alessandro Stocchino
Useful information, such as water levels, currents, salinity and temperature dynamics in water bodies, are obtained through numerical models in order to pursue scientific research or consultancy. Model validation dates back long ago, since such models st...
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M. R. Ajith Kumar, Jaan H. Pu, Prashanth R. Hanmaiahgari and Martin F. Lambert
A problem with 1-D water hammer modelling is in the application of accurate unsteady friction. Moreover, investigating the time response of fluid dynamics and unsteady turbulence structures during the water hammer is not possible with a 1-D model. This r...
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Karol Wawrzak and Artur Tyliszczak
The paper is aimed at an assessment of the importance of the coordinate system (Cartesian vs. cylindrical) assumed for simulations of free-round jets. The research is performed by applying the large eddy simulation method with spatial discretisation base...
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José Fortes Lopes
Turbulence modelling is an important issue when dealing with hydrodynamic and transport models for better simulation of the transport of dissolved or suspended substances in a body-water. It controls processes involving physical balances (salt and water ...
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Ville M. Viitanen, Antti Hynninen, Tuomas Sipilä and Timo Siikonen
In this paper we present results of delayed detached eddy simulation (DDES) and computational hydroacoustics (CHA) simulations of a marine propeller operating in a cavitation tunnel. DDES is carried out in both wetted and cavitating conditions, and we pe...
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Ville M. Viitanen, Antti Hynninen, Tuomas Sipilä and Timo Siikonen
In this paper we present results of delayed detached eddy simulation (DDES) and computational hydroacoustics (CHA) simulations of a marine propeller operating in a cavitation tunnel. DDES is carried out in both wetted and cavitating conditions, and we pe...
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Nicholas F. Giannelis, Tamas Bykerk and Gareth A. Vio
This paper introduces a generic model for the study of aerodynamic behaviour relevant to fifth-generation high-performance aircraft. The model design is presented, outlining simplifications made to retain the key features of modern high-performance vehic...
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Angus Gray-Stephens, Tahsin Tezdogan and Sandy Day
This study investigates the level of accuracy with which Computational Fluid Dynamics (CFD) is capable of modelling the nearfield longitudinal wake profiles of a high-speed planing hull. It also looks to establish how various set-ups influence the accura...
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