Ventilation-based Removal of Toxic Gases from Geothermal Sources in Infrastructure Projects using Computational Fluid Dynamics (CFD)
Authors
Cemalettin Okay Aksoy, Guzin Gulsev Uyar Aksoy, Berker Sarısan
DOI
Abstract
In infrastructure projects involving geothermal areas, it is imperative to prioritize human health and environmental protection by effectively removing toxic gases that may leak from underground geothermal sources. Computational Fluid Dynamics (CFD) simulations are an invaluable tool for accurately modeling and analyzing the complex physical processes associated with the transport and distribution of gases. To ensure safety, it is imperative to design an effective ventilation system that can remove toxic and/or combustible gases, such as hydrogen sulphide, carbon dioxide and methane. The system should be optimized by experts for the absorption, transport, and distribution of gases. Computational Fluid Dynamics (CFD) simulations can be used to confidently evaluate the system's design and performance. CFD is a powerful tool for modelling complex fluid dynamics related to the transport and distribution of gases. Utilising CFD simulations to model gases leaked from geothermal sources provides a better understanding of their movement throughout infrastructure projects and environmental impacts. Informed decisions can be made using CFD, resulting in positive impacts on the environment and infrastructure projects. CFD simulations are also essential in optimising factors such as ventilation system placement, duct design, air flow rates, and filtration efficiency. CFD simulations can effectively assess the safety and effectiveness of ventilation systems in removing toxic gases, minimizing environmental impacts. The study investigates the behavior of geothermal gases seeping from the ground in a sample tunnel structure, highlighting the importance of simulating ventilation systems during potential emergencies to evaluate risks. The fan installed inside the tunnel, along with the fan duct connected to it, effectively extracted the gases from the environment. The results were analyzed with confidence and objectivity.