--- title: The application of numerical modeling in efficiency driven designs - Ventilation problem (Disponible en anglais seulement) date: 2019-02-22T14:59:00-05:00 author: jessica napert canonical_url: "https://www.bbaconsultants.com/fr-ca/publications/the-application-of-numerical-modeling-in-efficiency-driven-designs-ventilation-problem-disponible-en-anglais-seulement" section: Publications --- 1. The concept of Computational Fluid Dynamics (CFD) and its applications can be dated back as early as the 1960s. Over the years, due to the development of both theoretical research and computer technologies, CFD has become a very useful tool for design engineers and researchers for complex problems where manual calculation is neither sufficient nor possible. This paper demonstrates a design example of a CFD application for ventilation problems in a greenhouse. Due to the forced air inflow and outflow by fans, turbulence was expected to form inside the greenhouse, which will affect the CO2, H2O and temperature distribution and ultimately impact the plant growth in certain areas of the greenhouse. A 3D numerical model was developed in Ansys CFX to analyze this problem. This model is a multi-physics model that includes the simulation of dynamic flow distribution, heat transference and gas mixing. For accurate calculation of these three variables in the domain, three sub-models were created within the overall model and were two-way coupled to achieve integration. Various methodologies and techniques where applied to verify the model input and output, and different model sensitivity analysis scenarios were also discussed. Based on the simulation results, optimizations were implemented, which significantly improved the air circulation inside the greenhouse. Although this paper is an example of a CFD application in the greenhouse, a similar methodology and concept have been applied in many other applications and other industries, which are listed at the end of this paper. Ce contenu est fourni uniquement à des fins d’information générale. Tous droits réservés ©BBA 1. ![Line Ricard](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/3260/Line-Ricard.webp) Lyne Ricard, ing. Expert-conseil sénior, Carburants et produits chimiques avancés [ ](https://www.linkedin.com/in/lynericard/) - [ 27 juill. 2026 Mines et métaux Vos décisions liées aux résidus miniers influencent la performance à long terme - ![Geraldine Cosset](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/206707/Geraldine-Cosset.webp) - ![Jared Purdy](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/212424/Jared-Purdy.webp) ](https://www.bbaconsultants.com/fr-ca/perspectives/decisions-liees-aux-residus-miniers-influencent-performance-long-terme "Vos décisions liées aux résidus miniers influencent la performance à long terme") - [ 02 juill. 2026 Mines et métaux Python : un outil clé pour l’analyse des données en traitement des minerais - ![Charles Blais](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/211197/Charles-Blais.webp) - ![Juan Pablo Vergara](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/211266/Juan-Pablo-Vergara.webp) ](https://www.bbaconsultants.com/fr-ca/perspectives/python-un-outil-cle-pour-analyse-donnees-en-traitement-minerais "Python : un outil clé pour l’analyse des données en traitement des minerais") - [ 19 juin 2026 Mines et métaux La vitesse dans un projet se joue dès le départ - ![Mm employee men jean lheureux retouch web SQ LR BBA](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/204266/mm_employee_men_jean-lheureux_retouch_web_SQ_LR_BBA.webp) - ![Mm employee men benoit richard retouch web SQ LR BBA](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/203602/mm_employee_men_benoit-richard_retouch_web_SQ_LR_BBA.webp) ](https://www.bbaconsultants.com/fr-ca/perspectives/la-vitesse-dans-un-projet-se-joue-des-le-depart "La vitesse dans un projet se joue dès le départ") - [ 17 juin 2026 Plateforme de données industrielles : bâtir une fondation solide pour l’optimisation de vos activités opérationnelles - ![Pierre Boucher](https://www.assets.bbaconsultants.com/bba-production-assets/production/images/avatars/_size_avatar/2671/Pierre-Boucher.webp) Pierre Boucher, ing. Ingénieur sénior, Infrastructure et technologie opérationnelle ](https://www.bbaconsultants.com/fr-ca/perspectives/plateforme-donnes-industrielles-batir-une-fondation-solide-pour-optimisation-des-operations "Plateforme de données industrielles : bâtir une fondation solide pour l’optimisation de vos activités opérationnelles") [ Voir tout ](https://www.bbaconsultants.com/fr-ca/perspectives "Aller à la page Publications") Poussons la réflexion ensemble [ Contactez-nous ](https://www.bbaconsultants.com/fr-ca/contact) 1. The concept of Computational Fluid Dynamics (CFD) and its applications can be dated back as early as the 1960s. Over the years, due to the development of both theoretical research and computer technologies, CFD has become a very useful tool for design engineers and researchers for complex problems where manual calculation is neither sufficient nor possible. This paper demonstrates a design example of a CFD application for ventilation problems in a greenhouse. Due to the forced air inflow and outflow by fans, turbulence was expected to form inside the greenhouse, which will affect the CO2, H2O and temperature distribution and ultimately impact the plant growth in certain areas of the greenhouse. A 3D numerical model was developed in Ansys CFX to analyze this problem. This model is a multi-physics model that includes the simulation of dynamic flow distribution, heat transference and gas mixing. For accurate calculation of these three variables in the domain, three sub-models were created within the overall model and were two-way coupled to achieve integration. Various methodologies and techniques where applied to verify the model input and output, and different model sensitivity analysis scenarios were also discussed. Based on the simulation results, optimizations were implemented, which significantly improved the air circulation inside the greenhouse. Although this paper is an example of a CFD application in the greenhouse, a similar methodology and concept have been applied in many other applications and other industries, which are listed at the end of this paper. Ce contenu est fourni uniquement à des fins d’information générale. Tous droits réservés ©BBA