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

ABSTRACTPROPOSAL没有。： CTS-0412971和0412929提案类型：研究者发起（目标合作）主要研究者：卡伦A. THOLE和李S. langston机构：弗吉尼亚理工学院/康涅狄格大学目标：合作研究：机翼端壁节点的热和流动控制研究计划的目标是推进对三维流动的基本理解及其对涡轮机器传热的影响。主要目标是为工业定义一种方法，用于修改涡轮翼型-平台界面的接合处，以减少三维流动的存在及其对空气动力损失和传热的影响。智力的优点包括调查以下基本问题：几何修改的影响在前缘平台结合处的二次流在翼型通道内的发展；几何修正对气动损失和表面传热的影响以及前缘-平台结合部可压缩性对这些变化的影响。这项研究的更广泛的影响包括确定一种新的方法，可以应用于减少所有涡轮机器中存在的三维流动的影响。从经济角度考虑，重要的是美国在军事推进和发电方面都保持一个据点。从这项调查中获得的知识和理解使美国能够更有效地利用能源资源，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2000亿美元的发电行业，该行业每年需要200 -30亿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工业合作。除了直接参与研究的学生外，普拉特和惠特尼工业团队成员还将对一些学生进行有关燃气轮机领域相关问题的教育。PI坚定地致力于增加美国代表性不足群体的参与，Karen Thole教授在这一领域已经有了良好的记录。*由流体动力学与水力学、热传输与热处理项目共同资助

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