Satish G. Kandlikar

Bio: Satish G. Kandlikar is an academic researcher from Rochester Institute of Technology. The author has contributed to research in topics: Boiling & Heat transfer. The author has an hindex of 72, co-authored 388 publications receiving 20127 citations. Previous affiliations of Satish G. Kandlikar include Research Triangle Park & Massachusetts Institute of Technology.

A General Correlation for Saturated Two-Phase Flow Boiling Heat Transfer Inside Horizontal and Vertical Tubes

Abstract: A simple correlation was developed earlier by Kandlikar (1983) for predicting saturated flow boiling heat transfer coefficients inside horizontal and vertical tubes. It was based on a model utilizing the contributions due to nucleate boiling and convective mechanisms. It incorporated a fluid-dependent parameter F{sub fl} in the nucleate boiling term. The predictive ability of the correlation for different refrigerants was confirmed by comparing it with the recent data on R-113 by Jensen and Bensler (1986) and Khanpara et al. (1986). In the present work, the earlier correlation is further refined by expanding the data base to 5,246 data points from 24 experimental investigations with ten fluids. The proposed correlation gives a mean deviation of 15.9 percent with water data, and 18.8 percent with all refrigerant data, and it also predicts the correct h{sub TP} versus x trend as verified with water and R-113 data yielded the lowest mean deviations among correlations tested. The proposed correlation can be extended to other fluids by evaluating the fluid-dependent parameter F{sub fl} for that fluid from its flow boiling or pool boiling data.

Heat Transfer and Fluid Flow in Minichannels and Microchannels

Abstract: In the last few decades, new frontiers have been opened up by advances in our ability to produce microscale devices and systems. The numerous advantages that can be realized by constructing devices with microscale features have, in many cases, been exploited without a complete understanding of theway the miniaturized geometry alters the physical processes. The augmentation of transport processes due to microscale dimensions is taken advantage of in nature by all biological systems. In the engineered systems that are the focus of this book, the challenge is to understand and quantify how utilizing microscale passages alters the fluid flow patterns and the resulting, momentum, heat, and mass transfer processes to maximize device performance while minimizing cost, size, and energy requirements. In this book, we are concerned with flow through passages with hydraulic diameters from about 1μm to 3 mm, covering the range of microchannels and minichannels. Different phenomena are affected differently as we approach microscales depending on fluid properties and flow conditions; hence, classification schemes that identify a channel as macro, mini, or micro should be considered merely as guidelines. The main topics covered in this book are single-phase gas flow and heat transfer; singlephase liquid flow and heat transfer; electrokinetic effects on liquid flow; flow patterns, pressure drop, and heat transfer in convective boiling; flowpatterns, pressure drop, and heat transfer during convective condensation, and finally biological applications. The coverage is intended to reflect the status of our current understanding in these areas. In each chapter, the fundamental physical phenomena related to the specific processes are introduced first. Then, the engineering analyses and quantitative methods derived from theoretical and experimental work conducted worldwide are presented. Areas requiring further research are clearly identified throughout as well as summarized within each chapter. There are two intended audiences for this book. First, it is intended as a basic textbook for graduate students in various engineering applications. The students will find the necessary foundation for the relevant transport processes in microchannels as well as summaries of the key models, results, and correlations that represent the state-of-the-art. To facilitate the development of the ability to use the new information presented, each chapter contains several solved example problems that are carefully selected to provide practical guidance for students as well as practitioners. Second, this book is also expected to serve as a source book for component and system designers and researchers. Wherever possible, the range of applicability and uncertainty of the analyses presented is provided so that analyzing newdevices and configurations can be done with knownlevels of confidence. The comprehensive summary of the literature included in each chapter will also help the readers identify valuable source material relevant to their specific problem for further investigation.

Fundamental issues related to flow boiling in minichannels and microchannels

Abstract: Flow boiling in small hydraulic diameter channels is becoming increasingly important in many diverse applications. The previous studies addressing the effects of the channel size on the flow patterns, and heat transfer and pressure drop performance are reviewed in the present paper. The fundamental questions related to the presence of nucleate boiling and characteristics of flow boiling in microchannels and minichannels in comparison to that in the conventional channel sizes (3 mm and above) are addressed. Also, the effect of heat exchanger configuration—single-channel and multichannel—on the heat transfer and pressure drop performance is reviewed. The areas for future research are identified.

A Theoretical model to predict pool boiling CHF incorporating effects of contact angle and orientation

Abstract: A theoretical model is developed to describe the hydrodynamic behavior of the vapor-liquid interface of a bubble at the heater surface leading to the initiation of critical heat flux (CHF) condition. The momentum flux resulting from evaporation at the bubble base is identified to be an important parameter. A model based on theoretical considerations is developed for upward-facing surfaces with orientations of 0 deg (horizontal) to 90 deg (vertical). It includes the surface-liquid interaction effects through the dynamic receding contact angle. The CHF in pool boiling for water, refrigerants and cryogenic liquids is correctly predicted by the model, and the parametric trends of CHF with dynamic receding contact angle and subcooling are also well represented

I and i

Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

The C programming language

Abstract: This ebook is the first authorized digital version of Kernighan and Ritchie's 1988 classic, The C Programming Language (2nd Ed.). One of the best-selling programming books published in the last fifty years, "K&R" has been called everything from the "bible" to "a landmark in computer science" and it has influenced generations of programmers. Available now for all leading ebook platforms, this concise and beautifully written text is a "must-have" reference for every serious programmers digital library. As modestly described by the authors in the Preface to the First Edition, this "is not an introductory programming manual; it assumes some familiarity with basic programming concepts like variables, assignment statements, loops, and functions. Nonetheless, a novice programmer should be able to read along and pick up the language, although access to a more knowledgeable colleague will help."

Heat Transfer in Nanofluids—A Review

Abstract: Suspended nanoparticles in conventional fluids, called nanofluids, have been the subject of intensive study worldwide since pioneering researchers recently discovered the anomalous thermal behavior of these fluids. The enhanced thermal conductivity of these fluids with small-particle concentration was surprising and could not be explained by existing theories. Micrometer-sized particle-fluid suspensions exhibit no such dramatic enhancement. This difference has led to studies of other modes of heat transfer and efforts to develop a comprehensive theory. This article presents an exhaustive review of these studies and suggests a direction for future developments. The review and suggestions could be useful because the literature in this area is spread over a wide range of disciplines, including heat transfer, material science, physics, chemical engineering and synthetic chemistry.

Water adsorption in MOFs: fundamentals and applications

Abstract: This review article presents the fundamental and practical aspects of water adsorption in Metal–Organic Frameworks (MOFs). The state of the art of MOF stability in water, a crucial issue to many applications in which MOFs are promising candidates, is discussed here. Stability in both gaseous (such as humid gases) and aqueous media is considered. By considering a non-exhaustive yet representative set of MOFs, the different mechanisms of water adsorption in this class of materials are presented: reversible and continuous pore filling, irreversible and discontinuous pore filling through capillary condensation, and irreversibility arising from the flexibility and possible structural modifications of the host material. Water adsorption properties of more than 60 MOF samples are reported. The applications of MOFs as materials for heat-pumps and adsorbent-based chillers and proton conductors are also reviewed. Some directions for future work are suggested as concluding remarks.