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Clara Borén, Manel Grifoll and Marcella Castells-Sanabra
Maritime transportation is the prevalent mode of transport for overseas freight, and it is frequently recognised as a relatively environmentally sustainable means of transport. However, shipping is still a substantial source of greenhouse gas emissions. ...
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Hamed Abdeh, Giovanna Barigozzi and Nicoletta Franchina
Off-design condition of a rotor blade cascade with and without platform cooling was experimentally investigated. The ability of the gas turbine to operate down to 50% to 20% of its nominal intake air flow rate has an important consequence in the change i...
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Simon Pramstrahler, Andreas Peters, Mikel Lucas García De Albéniz, Peter Adrian Leitl, Franz Heitmeir and Andreas Marn
A turbine vane frame is a special type of intermediate turbine duct, and is one option to improve the efficiency and reduce the length and weight of an aero-engine. However, due to its geometry, it features a complex flow field, and therefore in-depth ae...
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Chuangxin Zhou, Shengfeng Zhao and Xingen Lu
A detailed numerical simulation of a transonic tandem fan stage was conducted, and the change rule of the flow structure inside the fan stage under the design and off-design conditions was discussed to determine the internal flow mechanisms. The results ...
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Dijana Damljanovic, Ðorde Vukovic, Goran Ocokoljic, Biljana Ilic and Bo?ko Ra?uo
Published results for standard wind tunnel models at non-standard test conditions are quite rare and/or may not be available. It has been found that those results are a useful aid in preparations for a number of wind tunnel tests in the Military Technica...
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Mehri Akbari Kordlar, Florian Heberle and Dieter Brüggemann
The difference in heating or cooling to power ratio between required demands for district networks and the proposed tri-generation system is the most challenging issue of the system configuration and design. In this work, an adjustable, novel tri-generat...
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Dongbo Shi, Lei Sun and Yonghui Xie
In this research, a two-stage deep convolutional neural network is proposed to predict the off-design performance of a S-CO2 turbine based on field reconstruction. Once the deep model is well-trained, the calculation with graphics processing unit (GPU)-a...
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Theodoros Zarogiannis, Athanasios I. Papadopoulos and Panos Seferlis
Solvent-based CO2 capture technologies hold promise for future implementation but conventional solvents incur significant energy penalties and capture costs. Phase-change solvents enable a significant reduction in the regeneration energy but their perfor...
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Andrea Ferrero
Supersonic inlets are a key component of present and future air-breathing propulsion systems for high-speed flight. The inlet design is challenging because of several phenomena that must be taken under control: shock waves, boundary layer separation and ...
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Nicoletta Franchina, Otman Kouaissah, Giacomo Persico and Marco Savini
The paper presents the results of a computational study on the aerodynamics and the performance of a small-scale Vertical-Axis Wind Turbine (VAWT) for distributed micro-generation. The complexity of VAWT aerodynamics, which are inherently unsteady and th...
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Fabrizio Ortolani, Giulio Dubbioso, Roberto Muscari, Salvatore Mauro and Andrea Di Mascio
The understanding of the performance of a propeller in realistic operative conditions is nowadays a key issue for improving design techniques, guaranteeing safety and continuity of operation at sea, and reducing maintenance costs. In this paper, a summar...
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Fabrizio Ortolani, Giulio Dubbioso, Roberto Muscari, Salvatore Mauro and Andrea Di Mascio
The understanding of the performance of a propeller in realistic operative conditions is nowadays a key issue for improving design techniques, guaranteeing safety and continuity of operation at sea, and reducing maintenance costs. In this paper, a summar...
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Ben-Ran Fu
This study explored effects of off-design heat source temperature (TW,in) or flow rate (mW) on heat transfer characteristics and performance of an organic Rankine cycle system by controlling the flow rate of working fl...
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Raphael Zaccone, Ugo Campora and Michele Martelli
In recent decades, the design of ship propulsion systems has been focusing on energy efficiency and low pollutant emissions. In this framework, diesel?electric propulsion has become a standard for many ship types and has proven its worth for flexible pro...
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Maitrik Shah, Beena Baloni, Salim Channiwala
Pág. 216 - 227
The design and off-design performance of a centrifugal pump largely depends on geomechanical parameters. This study aims at enhancing the performance by optimizing three geomechanical parameters of impeller-volute interactions. The present optimization i...
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Mario Leonardo Erario, Maria Grazia De Giorgi and Radoslaw Przysowa
Microturbines can be used not only in models and education but also to propel UAVs. However, their wider adoption is limited by their relatively low efficiency and durability. Validated simulation models are required to monitor their performance, improve...
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Hu Zhang, Jianbo Zang, Weidong Shi and Desheng Zhang
To understand the formation mechanism and evolution process of the perpendicular cavitation vortex (PCV) of an axial flow pump for off-design conditions, turbulent cavitating flows were numerically investigated using the rotation curvature-corrected shea...
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Danilo Calcagni, Giulio Dubbioso, Alessandro Capone, Fabrizio Ortolani and Riccardo Broglia
During maneuvers, propellers? operation differs from their design due to strong modification of the wake field with respect to the straight-ahead motion. The consequent modification of the loads overstresses the mechanical components of the shaftline, ex...
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Baoling Cui, Chenliang Zhang, Yuliang Zhang and Zuchao Zhu
The parameters of blade trailing edge have an important influence on the performance of centrifugal pump and internal unstable flow. In this study, the influences of cutting angles of blade trailing edge on unstable pressure pulsation and unstable flow s...
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Sverre Steen and Kourosh Koushan
This Special Issue is following up the success of the latest Symposium on Marine Propulsors (www.marinepropulsors.com, smp’17) by publishing extended or improved versions of the selected papers presented at the symposium[…]
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