GOALI: Collaborative Research: Thermal and Flow Control for Airfoil-Endwall Junctures

PROPOSAL编号：CTS-0412971和0412929 PROPOSAL类型：调查员发起(GOALI协作)主要研究人员：Karen A.Thole和Lee S.LANGSTONINSTION：弗吉尼亚理工学院/康涅狄格州大学GALI：协作研究：翼型的热和流动控制-ENDWALL JuncURE该研究计划的目标是促进对叶轮机械中三维流动及其对热传递的影响的基本理解。主要目标是确定一种工业方法，用于修改涡轮翼型-平台界面处的连接处，以减少三维流动的存在及其对空气动力损失和热传递的影响。其理论价值包括研究以下基本问题：前缘-平台交界处的几何修改对翼型通道内二次流发展的影响；几何修改对气动损失和表面换热的影响；以及前缘-平台交界处的可压缩性对这些修改的影响。这项调查的更广泛影响包括确定一种新的方法，该方法可用于减少所有涡轮机械中存在的三维流动的影响。从经济上考虑，美国在军事推进和发电方面保持一个据点是很重要的。从此次调查中获得的知识和理解，使美国能够更有效地利用能源，并保持其在燃气轮机经济领域的据点。这种设计涡轮翼型的新方法的成功将影响价值2000亿美元的发电行业，该行业每年需要200亿至300亿美元的燃气轮机设备。更广泛的影响包括在两个不同的机构培训研究生，以及他们参与产业合作。除了直接参与研究的学生外，普惠工业团队成员还将对一些学生进行燃气轮机领域相关问题的教育。国际和平协会坚定地致力于增加美国代表性不足群体的参与，而凯伦·特霍尔教授在这一领域已经有了很好的记录。*由流体动力学和水力、热运输和热处理项目联合资助

ABSTRACTPROPOSAL NO.: CTS-0412971 AND 0412929PROPOSAL TYPE: INVESTIGATOR INITIATED (GOALI COLLABORATIVE)PRINCIPAL INVESTIGATORS: KAREN A. THOLE AND LEE S. LANGSTONINSTITUTION: VIRGINIA POLYTECHNIC INST./UNIVERSITY OF CONNECTICUT GOALI: COLLABORATIVE RESEARCH: THERMAL AND FLOW CONTROL FOR AIRFOIL-ENDWALL JUNCTURESThe goal of the research program is to advance fundamental understanding of three dimensional flows and their consequences on heat transfer in turbomachines. A primary objective is to define an approach for industry to use in modifying junctures at the turbine airfoil-platform interface to reduce the presence of three-dimensional flows and their effects on both aerodynamic losses and heat transfer. The intellectual merit consists of investigating the following fundamental issues: the impact of a geometric modification at the leading edge-platform juncture on the development of the secondary flows within an airfoil passage; the impact of a geometric modification on the aerodynamic loss and surface heat transfer; and the influence of compressibility on these modifications at the leading edge-platform juncture. The broader impact of this investigation includes determining a new methodology that can be applied to reduce the impact of three-dimensional flows present in all turbomachines. From an economical consideration, it is important that the US remain a stronghold in both military propulsion and power generation. The knowledge and understanding gains from this investigation allow the US to make more efficient use of energy resources and to retain its stronghold in the gas turbine sector of the economy. The success of this new approach to designing turbine airfoils will impact the $200B electric power generation industry, which requires $20B-30B/year in gas turbine equipment. The broader impacts include training of graduate students at two different institutions and their participation in the industrial collaboration. In addition to the students involved directly with the research, a number of students will be educated on relevant issues in the gas turbine area by the Pratt and Whitney industrial team member. The PI's are strongly committed to increasing participation of underrepresented groups in the US, and Prof. Karen Thole already has a strong track record in this area.*co-funded jointly by the Fluid Dynamics & Hydraulics, Thermal Transport & Thermal Processing programs