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| Registros recuperados: 10 | |
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| Lloyd, Catherine; Allmark, Matthew; Ordonez-sanchez, Stephanie; Martinez, Rodrigo; Johnstone, Cameron; Germain, Gregory; Gaurier, Benoit; Mason-jones, Allan; O'Doherty, Tim. |
| A comparison of a tidal turbine's performance and structural loads is conducted using lab-scale numerical models and experimental testing under multiple current-only and wave-current conditions at the IFREMER wave-current flume. Experimental testing, used to validate CFD models, was accomplished using a 0.9 m diameter, 3-bladed tidal turbine and had a blockage ratio of 8% while the turbine was submerged. Initial investigations analysed the performance and loads on the turbine under uniform and profiled current-only conditions. The presence of a profiled velocity gradient was found to have a negligible effect on the average performance characteristics; however, transient thrust, torque and out of plane bending moment loads experienced much greater... |
| Tipo: Text |
Palavras-chave: Tidal stream turbine; Wave-current interaction; Computational fluid dynamics; Regular waves; Experimental validation; Marine energy. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00678/78987/81381.pdf |
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| Camargo,Tiago F. B.; Silva,Robson L.; Higa,Márcio; Coutinho,Mônica R.; Oliveira,Júlio C. D. de; Conceição,Wagner A. dos S.. |
| ABSTRACT Thermal comfort inside broiler husbandry facilities is essential in obtaining good results in the production activity. Assessment of adequate thermodynamic conditions requires measurement and control, usually implying costs and specialized maintenance. The objective of this research was to monitor the temperature, relative humidity and air speed distributions by a developed low-cost, open-source and easy-to-use measurement system, using Arduino (hardware) and Scilab (software) for real-time data acquisition. Sensors were installed in a real facility (Cianorte, PR), with measurements for internal ambient (20 sensors for temperature/relative humidity, and two sensors for differential pressure, respectively 0.5 and 1.5 m high) and external ambient... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Measuring system; Ventilation; Computational fluid dynamics; Poultry production. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000900694 |
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| Kumi, Francis. |
| The postharvest losses of agricultural produce in Ghana and other developing countries is high. Efforts to promote shelf-life extension of the fresh produce is centred around temperature and moisture management. Moisture control by drying is suited to a number of crops as it inhibits microbial decay and physiological processes of deterioration. However, there are often inefficient drying infrastructure in developing countries. Thus, the focus of this research was to structurally modify a chimney solar dryer originally designed by the Horticulture Innovation Laboratory of the University of California, Davis and include sea pebbles in the collector base to enhance its heating system and drying performance. A computational fluid dynamics analysis using ANSYS... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chimney; Dryer; Computational fluid dynamics; Simulation; Moisture content. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7005 |
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| Marinho,Daniel Almeida; Reis,Victor Machado; Vilas-Boas,João Paulo; Alves,Francisco Bessone; Machado,Leandro; Rouboa,Abel Ilah; Silva,António José. |
| The purpose of this study was to develop a three-dimensional digital model of a human hand and forearm to apply Computational Fluid Dynamics to propulsion analysis in swimming. Computer tomography scans of the hand and forearm of an Olympic swimmer were applied. The data were converted, using image processing techniques, into relevant coordinate input, which could be used in Computational Fluid Dynamics software. From that analysis, it was possible to verify an almost perfect agreement between the true human segment and the digital model. This technique could be used as a means to overcome the difficulties in developing a true three-dimensional model of a specific segment of the human body. Additionally, it could be used to improve the use of Computational... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Finite element modelling; Image processing; Computational fluid dynamics; Biomechanics; Swimming. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200024 |
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| Wang,T.; Chen,D.; Wang,P.H.; Chen,J.; Deng,J.. |
| We used a computational fluid dynamics (CFD) model to study the inspiratory airflow profiles of patients with anterior nasal cavity stenosis who underwent curative surgery, by comparing pre- and postoperative airflow characteristics. Twenty patients with severe anterior nasal cavity stenosis, including one case of bilateral stenosis, underwent computed tomography (CT) scans for CFD modelling. The pre- and postoperative airflow characteristics of the nasal cavity were simulated and analyzed. The narrowest area of the nasal cavity in all 20 patients was located within the nasal valve area, and the mean cross-sectional area increased from 0.39 cm2 preoperative to 0.78 cm2 postoperative (P<0.01). Meanwhile, the mean airflow velocity in the nasal valve area... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anterior nasal cavity stenosis; Computational fluid dynamics; Nasal valve area; Airflow characteristics. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000900704 |
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| Registros recuperados: 10 | |
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