Doğal Havalandırmalı Serbest Duraklı Bir Süt Sığırı Ahırında Çevre Koşullarının Hesaplamalı Akışkanlar Dinamiği ile Modellenmesi

Year 2022, Volume: 39 Issue: 3, 176 - 184, 31.12.2022

Erdem Küçüktopcu Selda Uzal Seyfi Muminah Mustaqimah Bilal Cemek

https://doi.org/10.55507/gopzfd.1181753

Abstract

: Süt sığırı ahırlarının tasarımında yeterli havalandırmanın sağlanması önemli bir faktördür. İyi havalandırılmış bir ahır, hayvanlarda stresi azaltarak ve hava kalitesini iyileştirerek çevreye ve hayvanlara fayda sağlar. Bu çalışmanın amacı, hesaplamalı akışkanlar dinamiği (HAD) modelini kullanarak serbest duraklı bir süt ahırında çevresel koşulların mekânsal değişkenliğini değerlendirmektir. Simülasyondan edilen sonuçlarla karşılaştırmak için ahırda sıcaklık ve hava hızı ölçümleri yapılmıştır. Simülasyon, kararlı durum koşulları altında gerçekleştirilmiş ve ahırdaki hayvan dağılımlarının yanı sıra ayakta duran ve yatan ineklerin belirli davranışları da göz önünde bulundurulmuştur. Ahırda ölçülen ve tahmin edilen ortalama hava sıcaklıkları sırasıyla 21.50 ± 0.174 °C ve 21.33 ± 0.213 °C, hava hızları ise sırasıyla 0.30 ± 0.196 m s-1 ve 0.31 ± 0.197 m s-1 olarak elde edilmiştir. Sonuç olarak, bu çalışma, HAD'ın süt ahırlarındaki çevresel koşulların mekânsal değişkenliğini değerlendirmek için önemli bir araç olduğunu ve ahır iç ortam koşullarını analiz etmek için alternatif bir teknik olarak kullanılabileceğini göstermiştir.

Keywords

hava akışı, hayvan davranışı, sıcaklık stresi, sayısal analiz, havalandırma

Computational Fluid Dynamics Modeling of Environmental Conditions in A Naturally Ventilated Free-Stall Dairy Barn

Abstract

An essential parameter for the design of a dairy barn is adequate ventilation. A well-ventilated barn benefits the environment and the animals by reducing stress and improving air quality. The aim of this study was to evaluate the spatial variability of environmental conditions in a free-stall dairy barn using computational fluid dynamics (CFD). Measurements of temperature and air velocity in the barn were made for comparison with the simulated results. The simulations were performed under steady-state conditions and considered the specific behavior of standing and lying cows and their distribution in the barn. The measured and predicted mean air temperatures in the barn were 21.50 ± 0.174 °C and 21.33 ± 0.213 °C, while the air velocities were 0.30 ± 0.196 m s-1 and 0.31 ± 0.197 m s-1, respectively. In conclusion, this study demonstrated that CFD is a valuable tool for evaluating the spatial variability of environmental conditions in dairy barns and can be used as an alternative technique for analyzing barn environments.

Keywords

airflow, cow behavior, heat stress, numeric analysis, ventilation

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