Modelling of cowl performance in building simulation tools using experimental data and computational fluid dynamics

被引:15
|
作者
Pfeiffer, Andreas [1 ]
Dorer, Viktor [1 ]
Weber, Andreas [1 ]
机构
[1] Empa, Swiss Fed Labs Mat Testing & Res, Energy Syst & Bldg Equipment Lab, CH-8600 Dubendorf, Switzerland
关键词
hybrid ventilation; exhaust cowls; simulation; computational fluid dynamics; CFD; natural ventilation; airflow around buildings;
D O I
10.1016/j.buildenv.2007.01.038
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Exhaust cowls are used in conjunction with hybrid ventilation systems to efficiently convert wind energy into negative pressure and thus minimize the electrical energy required by the extract fan. Yet the fact that cowl performance is largely dictated by operating conditions imposes particularly stringent demands on modelling. This paper demonstrates, by way of a concrete example, the need for and potential benefits of a new methodological approach to the modelling of cowls. The study focuses on a specific modelling strategy, applied within a building simulation program, for a cowl used in a hybrid ventilation system. The method is progressively simplified to produce four variants, which chiefly vary according to their level of detail and, hence, the associated modelling effort. Wind pressure coefficients at facade, above roof and in the cowl are needed for all model variants. Some of the investigated variants rely on CFD computations of airflow around the building to determine these values. This study uses the example of a single-family house (SFH) to identify those criteria requiring particular attention in the performance of CFD numerical flow analyses. All four variants are examined on the basis of this example to determine which simplifications to the model are appropriate and permissible without unduly compromising the accuracy of the results. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1361 / 1372
页数:12
相关论文
共 50 条
  • [11] Computational fluid dynamics simulation of a supersonic rocket thruster flow compared with experimental data
    Davoudzadeh, F
    Liu, NS
    JOURNAL OF VISUALIZATION, 2004, 7 (03) : 173 - 173
  • [12] The modelling of ventilation processes using computational fluid dynamics
    Halliwell, JAK
    Elliott, L
    Ingham, DB
    1997 JUBILEE RESEARCH EVENT, VOLS 1 AND 2, 1997, : 233 - 236
  • [13] Modelling of industrial processes using computational fluid dynamics
    Univ of British Columbia, Vancouver, Canada
    Can Metall Q, 3-4 (251-263):
  • [14] Modelling of industrial processes using computational fluid dynamics
    Salcudean, M
    CANADIAN METALLURGICAL QUARTERLY, 1998, 37 (3-4) : 251 - 263
  • [15] Urban flood modelling using computational fluid dynamics
    Haider, S
    Paquier, A
    Morel, R
    Champagne, JY
    PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-WATER AND MARITIME ENGINEERING, 2003, 156 (02): : 129 - 135
  • [16] Integration of computational fluid dynamics with building thermal and mass flow simulation
    Negrao, COR
    ENERGY AND BUILDINGS, 1998, 27 (02) : 155 - 165
  • [17] Computational Fluid Dynamics Application Tools
    Mohiuddin, Irfan
    Mathkour, Hassan
    2015 WORLD CONGRESS ON INFORMATION TECHNOLOGY AND COMPUTER APPLICATIONS (WCITCA), 2015,
  • [18] USING EXPERIMENTAL FLUID DYNAMICS AND COMPUTATIONAL FLUID DYNAMICS FOR EVALUATING PERIODIC MIXING
    Bamberger, Judith Ann
    Pease, Leonard F.
    Recknagle, Kurtis P.
    Enderlin, Carl W.
    Minette, Michael J.
    PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2018, VOL 7, 2019,
  • [19] Computational Fluid Dynamics Simulation and Experimental Validation of Hydraulic Performance of a Vertical Suspended API Pump
    Ayremlouzadeh, H.
    Ghafouri, J.
    INTERNATIONAL JOURNAL OF ENGINEERING, 2016, 29 (11): : 1612 - 1619
  • [20] NUMERICAL SIMULATION OF EROSION USING COMPUTATIONAL FLUID DYNAMICS
    Grewal, H. S.
    Singh, H.
    Agrawal, Anupam
    CFD MODELING AND SIMULATION IN MATERIALS PROCESSING, 2012, : 89 - 96