Addressing Challenges Through Effective Utilisation of High Performance Computing - a case for the UK Consortium on Turbulent Reacting Flows (UKCTRF)

新扩大的英国湍流反应流联盟（UKCTRF）将进一步利用高性能计算（HPC）的发展，以提供对湍流反应流的更好的基本理解和建模，这对于有效利用能源资源，开发可靠的消防安全措施以及控制燃烧过程以确保环境友好性至关重要。这些挑战是多方面的，需要在广泛的科学领域开展合作。UKCTRF汇集了来自19个英国机构的40名专家（PI，6名共同研究员和33名成员），他们在使用HPC方面经验丰富，能够协调合作计算流体动力学（CFD）相关的湍流反应流基础和应用研究，以减少重复，并应对比个人尝试更大的挑战。自2014年成立以来，UKCTRF已经取得了重大的科学和工业影响力，有400多篇期刊和会议论文使用了ARCHER。燃烧研究所所长J.F. Drivel在他的支持信中指出，UKCTRF成员的出版物是帮助发展年轻研究人员思想的最佳出版物之一，罗尔斯·罗伊斯的支持信指出，由于UKCTRF，在HPC的帮助下，燃烧现象的预测取得了重大进展。在未来四年，该联盟的目标是：（i）进一步利用HPC资源进行世界领先的湍流反应流研究，包括雷诺平均纳维尔-斯托克斯（RANS），大涡模拟（LES）和直接数值模拟（DNS）;（ii）从模拟中提取基本的物理见解，以开发高保真的建模方法，研究与发电有关的湍流反应流，（iii）确保前瞻性的软件开发策略，以开发计算效率高的算法，并有效利用HPC硬件的当前和未来发展。拟议的研究将建立在当前UKCTRF（2014-2019）和旗舰软件开发（EP/P022286/1）项目的基础上，并将解决能源效率，可持续性和高保真消防安全的普遍挑战。HPC的进展将使UKCTRF的新化身能够加强现有的优势，但也及时解决以下知识和行业驱动的挑战：（i）多相反应流的模拟和建模（ii）沼气和煤气化产生的低热值燃料的燃烧分析;（iii）火焰-壁面相互作用;以及（iv）在升高的压力下燃烧，由于HPC的发展，这仅在最近才变得可行。

The new expanded UK Consortium on Turbulent Reacting Flows (UKCTRF) will further utilise the developments of High-Performance Computing (HPC) to offer improved fundamental understanding and modelling of turbulent reacting flows, which are pivotal in the effective usage of energy resources, development of reliable fire safety measures, and manipulation of the combustion processes to ensure environmental friendliness. These challenges are multi-faceted, and will require collaboration across a wide range of scientific areas. The UKCTRF brings together 40 experts (PI, 6 Co-Investigators, and 33 members) across 19 UK institutions, experienced in using HPC to enable concerted collaborative Computational Fluid Dynamics (CFD)-related fundamental and applied research on turbulent reacting flows to reduce duplication, and tackle challenges grander than individual attempts. Since its inception in 2014, the UKCTRF has achieved significant scientific and industrial impact with over 400 journal and conference papers which utilised ARCHER. The President of the Combustion Institute, Prof. J.F. Driscoll, has stated in his support letter that the publications of the UKCTRF members are among the best which help develop the minds of young researchers and the support letter from Rolls Royce states that as a result of the UKCTRF significant progress was made in the prediction of combustion phenomena with the help of HPC. Over the next 4 years, the consortium's goals are to: (i) further utilise HPC resources to conduct world-leading turbulent reacting flow research involving Reynolds Averaged Navier-Stokes (RANS), Large Eddy Simulation (LES) and Direct Numerical Simulation (DNS); (ii) extract fundamental physical insights from simulations to develop high-fidelity modelling methodologies to study turbulent reacting flows relevant to power production, transportation and fire safety engineering; and (iii) ensure a forward-looking software development strategy to develop computationally efficient algorithms, and effectively exploit current and future developments of HPC hardware. The proposed research will build on the foundations of the current UKCTRF (2014-2019) and Flagship Software development (EP/P022286/1) projects and will address universal challenges of energy efficiency, sustainability and high-fidelity fire safety. The progress in HPC will enable this new incarnation of UKCTRF to reinforce existing strengths, but also address the following timely intellectual and industry-driven challenges: (i) simulation and modelling of multi-phase reacting flows (e.g. droplet and pulverised coal/biomass combustion); (ii) combustion analysis of biogas and low calorific fuels derived from coal gasification; (iii) flame-wall interaction; and (iv) combustion at elevated pressures, which have only recently become accessible due to the advancement of HPC.