标题： 社区对计算流体动力学研究环境成本的态度 显示英文标题

标题： Community attitudes towards the environmental cost of computational fluid dynamics research

摘要： 数值模拟是当今流体动力学研究的重要基础。 这类模拟通常依赖于大规模高性能计算（HPC）系统，并且具有显著的碳足迹。 提高数据中心的效率或增加可再生能源的使用比例可以在一定程度上减轻科学计算对环境的影响，但研究人员的态度也起到一定作用。 研究人员做出的许多选择会影响模拟的碳足迹。 要改变模拟使用的习惯，首先需要了解人们对模拟的态度。 在此，我们基于英国曼彻斯特大学的流体动力学研究人员进行了一项案例研究。 我们发现，研究人员对计算的碳足迹认识不足，再加上缺乏对运行模拟所用具体硬件的知识。 研究人员自我声明的减少工作碳足迹的态度与其行为和选择之间存在差异。 总体而言，研究人员并未将碳足迹视为决策中的重要因素，我们也没有发现模拟的影响与碳成本之间的相关性。 为了该领域的可持续发展，提高对模拟环境影响的认识和教育至关重要。 显示英文摘要

摘要： Numerical simulations underpin much fluid dynamics research today. Such simulations often rely on large scale high performance computing (HPC) systems, and have a significant carbon footprint. Increasing the efficiency of data centers or the proportion of electricity coming from renewable sources can lessen the environmental impact of scientific computing to a degree, but the attitudes of researchers also play a role. There are many choices researchers make which influence the carbon footprint of simulations. To change behaviours around simulation use, it is first necessary to understand attitudes toward them. Here, we present a case study on fluid dynamics researchers based in the University of Manchester, UK. We find a low awareness of the carbon footprint of computations, compounded by a lack of knowledge of the specific hardware used to run simulations. There is a discrepancy between researchers self-declared attitudes towards reducing the carbon footprint of their work, and their actions and choices. Overall, researchers did not consider carbon footprint as important in their decision making, and we found no correlation between the impact and carbon cost of simulations. Improved education and awareness of the environmental impact of simulations is imperative in the interests of the sustainability of this field.