GOALI collaboration to advance transition and turbulence modeling

这份GOALI提案的目的是在爱荷华州立大学（ISU）航空航天工程系和位于纽约州尼斯卡亚纳的通用电气全球研究中心（GRC）之间建立技术交流。GRC的工程师将访问ISU，给本科生讲课，并建立研究合作。GRC参与者将为本科生提供有关大型航空航天公司工程的第一手见解。一些与GRC有关的应用需要改进它们预测湍流输送的能力以及预测层流和湍流状态之间转换的能力。ISU的教师在这些领域都有专业知识。实际应用将激发ISU的基础研究，并成为将基础研究转化为工业实践的途径。学术价值：近十年来，在由入射扰动、尾迹或自由流湍流引起的边界层过渡理论方面似乎取得了重大进展。直接数值模拟已经产生了对机制的实质性见解，并产生了难以在实验室中产生的数据。然而，实际的建模还处于早期阶段。工业界和学术界合作将基本发展成果应用于实践的时机已经成熟。相比之下，紊流输运的闭合模型已经很好地建立起来了。它的局限性众所周知；但在可预见的未来，它仍然是实际流量预测的主要工具。涉及流体流动的先进推进概念和能源技术越来越多地通过计算机模拟来探索，这需要分析闭合模型。在这个项目中的pi在改进模型和使它们适应这些需求方面有共同的利益。该GOALI提案承诺通过学者和研发工程师的共同努力来解决这些挑战。更广泛的影响：这个项目的制定本身就注定了它将对教育产生影响，并将促进原本不会发生的合作。爱荷华州立大学航空系强烈鼓励本科生参与研究。每年都有一个春季论坛，学生们就他们的工作发表演讲。该GOALI项目将为学生提供更多接触GE工程师的机会。学生将被鼓励从事工程方面的职业；通用电气可能会招收国际州立大学的优秀学生。GE-GRC的工程师将访问ISU，促进可以在GOALI框架之外继续进行的合作。这种长期的关系将会持久。所有在NSF的支持下进行的研究将通过档案出版物、会议报告等方式进行传播。在大学和产业合作中，专有信息将受到保护，不被披露，这是固有的。然而，在这个项目下完成的主要工作将不受专有限制。

0965717DurbinThis GOALI proposal has the purpose of establishing a technical exchange between the Aerospace Engineering department at Iowa State University (ISU) and General Electric-Global Research Center (GRC) in Niskayana, NY. Engineers at GRC will visit ISU to give lectures to undergraduates and to establish research collaborations. GRC participants will provide first hand insights into engineering in a major aerospace company to undergraduates. Several applications of concern to GRC demand improvements in their ability to predict turbulent transport and in their ability to predict transition between laminar and turbulent states of fluid flow. ISU faculty have expertise in these areas. The practical applications will stimulate basic research at ISU and be the avenue to transfer basic research into industrial practice.Intellectual Merit:The last decade has seem significant progress in the theory of boundary layer transition induced by incident disturbances wakes or free-stream turbulence. Direct numerical simulations have produced substantial insight into mechanisms, and has created data that would be difficult to produce in a laboratory. However, practical modeling is at an early stage. The time is ripe for an industry/academia collaboration to bring basic developments to bear on practice. By contrast, closure modeling for turbulent transport is well established. Its limitations are well known; but it remains the primary tool for practical flow prediction in the foreseeable future. Advanced propulsion concepts and energy technologies that involve fluid flow are increasingly explored by computer simulations that require analytical closure models. The PIs in this program have mutual interest in improving models and adapting them to these needs. This GOALI proposal promises to tackle these challenges through academics and R & D engineers joining forces.Broader impacts:It is inherent in the formulation of this program that it will have an impact on education and will foster collaboration that would not otherwise take place. The Aero department at Iowa State strongly encourages undergraduate participation in research. Each year there is a Spring forum at which students present talks on their work. This GOALI program will provide students with extended access to GE engineers. Students will be encouraged to pursue careers in engineering; GE may recruit top ISU students.Engineers from GE-GRC will visit ISU to foster collaboration that can continue beyond the framework of GOALI. This long term relation will have a lasting. All research that occurs specifically under the aegis of NSF will be disseminated by archival publication, conference presentations, etc. It is inherent in a university industry collaboration that proprietary information will be protected against disclosure. However, the primary work done under this project will be free of proprietary restrictions.