US-India Cooperative Research: Two-Phase Flow Instabilities in Boiling and Condensing Flow Systems

9723997 KAKAC描述：该奖项授予机械工程领域的一个联合项目，名为“美印合作研究：沸腾和冷凝流动系统中的两相流动不稳定性”。共同调查者是迈阿密大学的萨迪克·卡卡奇和维萨卡普特南安得拉大学的P·K·萨尔马。对水平管内沸腾冷凝系统中的两相流动不稳定性和换热进行了实验和理论研究。研究的主要目的是研究各种沸腾和冷凝两相流不稳定性的基本机理、对这些不稳定性的参数影响、传热和这些不稳定性之间的相互作用，并对这些复杂的现象进行数学建模。通过结合他们的专业知识，研究人员希望能够揭示沸腾和冷凝流动动力学和传热的相似基本物理机制，并进一步澄清这两种物理现象之间的差异。范围：该联合项目是1995年在安得拉大学举办的一个由INT资助的讲习班的基础上发展起来的。这些研究是相辅相成、互惠互利的。美国PI在研究沸腾流动不稳定性和振荡方面具有丰富的研究经验，而印度PI在冷凝换热和动力学研究方面具有丰富的经验。因此，沸腾两相流不稳定性实验将在迈阿密进行，而两相流冷凝不稳定性和换热实验将在安德拉进行。两所大学的研究团队将相互参与对方的实验研究，并参与理论模型的开发。作为学生参与研究的一种新的合作和参与，该项目支持INT目标。***

9723997 Kakac Description: This award is for a joint project in mechanical engineering entitled "US-India Cooperative Research: Two Phase Flow Instabilities in Boiling & Condensing Flow Systems". The co-investigators are Sadik Kakac of the University of Miami and P.K. Sarma of Andhra University in Visakhaputnam. The investigations on two-phase flow instabilities and heat transfer in horizontal in-tube boiling and condensing systems are experimental and theoretical. The main objectives of the research are to study the fundamental mechanisms of various boiling and condensing two- phase flow instabilities, the parametric effects on these instabilities, the interaction between heat transfer and these instabilities, and to model these complicated phenomena mathematically. By combining their expertise, the investigators expect to be able to reveal the similar fundamental physical mechanism of both boiling and condensing flows dynamics and heat transfer, and to further clarify the differences between the two physical phenomena. Scope: This joint project developed from an INT supported workshop held at Andhra University in 1995. The research is complementary and mutually beneficial. The US PI has extensive research experience in the study of boiling flow instabilities and oscillations; while the Indian PI has extensive experience in the study of condensing heat transfer and dynamics. Accordingly, experiments in boiling two-phase flow instabilities will be conducted at Miami, while the two-phase flow condensation instabilities and heat transfer experiments will be done at Andhra. Research teams at both universities will participate in each other's experimental investigations, and in the theoretical model development. As a new collaboration and involvement of students in the research, this project supports INT objectives. ***