严格齐,男,博士,副教授,硕士研究生导师。研究方向为畜禽舍智能环境调控技术与装备,畜禽健康养殖工艺、行为与福利。在《农业工程学报》,Computers and Electronics in Agriculture, Biosystems Engineering等国内外学术期刊发表学术论文10余篇,近5年参与国家重点研发项目、国家现代农业产业技术体系专项等课题。(ORCID: 0000-0002-5766-8576),博士,副教授,主要从事智慧畜牧工程研究,E-mail:yangeqi@sdau.edu.com
严格齐,男,博士,副教授,硕士研究生导师。研究方向为畜禽舍智能环境调控技术与装备,畜禽健康养殖工艺、行为与福利。在《农业工程学报》,Computers and Electronics in Agriculture, Biosystems Engineering等国内外学术期刊发表学术论文10余篇,近5年参与国家重点研发项目、国家现代农业产业技术体系专项等课题。(ORCID: 0000-0002-5766-8576),博士,副教授,主要从事智慧畜牧工程研究,E-mail:yangeqi@sdau.edu.com
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CFD-based modeling of porous media simplification and growth-stage-dependent resistance coefficients in tiered-cage meat duck houses
College of Animal Science and Technology/Key Laboratory of Efficient Utilization of Non-Grain Feed Resources (Ministry-Province Co-constructed)/Shandong Provincial Key Laboratory of Livestock and Poultry Nutrition and Efficient Feeding,Shandong Agricultural University,Tai’an 271017,China
To address the engineering requirements for ventilation optimization in tiered-cage meat duck houses at different growth stages, computational fluid dynamics (CFD) was employed to establish four simplified duck geometric models: One detailed model, one head-removed model, one torso model, and one ellipsoid model. Systematic analysis was conducted to examine the differences and trends in resistance coefficients along the length (X), width (Y), and height (Z) directions of the duck cage for duck models at different ages. Additionally, the dynamic variations in the resistance characteristics of the duck activity area were investigated. The results indicate that: 1) The level of simplification of the duck model has a significant impact on the resistance coefficients. The inertial resistance error between the detailed model and the headless model was the smallest, with deviations of -15.7%, -13.1%, and 7.1% in the X, Y, and Z directions, respectively, while the errors for the other two models were larger, reaching a maximum of -44.4%. 2) During the growth process of the ducks, as their body weight increased from 0.19 to 2.82 kg, the inertial and viscous resistance coefficients in the X, Y, and Z directions significantly increased, and the increase was the most pronounced in the Z direction. In conclusion, the resistance coefficients for ducks at different growth stages and the model simplification methods proposed in this study can provide key parameter support for CFD ventilation simulations in tiered-cage meat duck houses.
严格齐,男,博士,副教授,硕士研究生导师。研究方向为畜禽舍智能环境调控技术与装备,畜禽健康养殖工艺、行为与福利。在《农业工程学报》,Computers and Electronics in Agriculture, Biosystems Engineering等国内外学术期刊发表学术论文10余篇,近5年参与国家重点研发项目、国家现代农业产业技术体系专项等课题。(ORCID: 0000-0002-5766-8576),博士,副教授,主要从事智慧畜牧工程研究,E-mail:yangeqi@sdau.edu.com
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严格齐,男,博士,副教授,硕士研究生导师。研究方向为畜禽舍智能环境调控技术与装备,畜禽健康养殖工艺、行为与福利。在《农业工程学报》,Computers and Electronics in Agriculture, Biosystems Engineering等国内外学术期刊发表学术论文10余篇,近5年参与国家重点研发项目、国家现代农业产业技术体系专项等课题。(ORCID: 0000-0002-5766-8576),博士,副教授,主要从事智慧畜牧工程研究,E-mail:yangeqi@sdau.edu.com
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