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Gas Dynamics by E. Rathakrishnan | Waterstones


Gas Dynamics by Radhakrishnan PDF Free Download




Are you looking for a comprehensive and accessible book on gas dynamics? Do you want to learn about the science and technology of fluid flow where both density and temperature changes are significant? If yes, then you should check out Gas Dynamics by Ethirajan Rathakrishnan, a renowned professor and researcher in aerospace engineering.




gas dynamics by radhakrishnan pdf free download


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This book is one of the most popular and widely used textbooks on gas dynamics, covering both theoretical and practical aspects of the subject. It introduces the basic concepts, equations, processes, and applications of gas dynamics in a clear and concise manner. It also provides numerous examples, problems, tables, figures, and illustrations to help you understand and apply the concepts.


In this article, we will give you an overview of what gas dynamics is, why it is important, what are the main topics covered in the book, and how to download it for free from various sources. So, let's get started!


What is Gas Dynamics?




Gas dynamics is a branch of fluid mechanics that deals with the flow of gases under conditions where both density and temperature changes are significant. Unlike incompressible fluids, such as water or air at low speeds, compressible fluids, such as air at high speeds or steam, undergo changes in their physical properties due to variations in pressure, temperature, velocity, and entropy.


Gas dynamics is a science that involves many complex phenomena, such as shock waves, expansion waves, sonic booms, supersonic flows, hypersonic flows, transonic flows, subsonic flows, choked flows, isentropic flows, Fanno flows, Rayleigh flows, potential flows, rarefied flows, high-temperature flows, etc. These phenomena have important implications for various engineering devices and systems that involve gas flow, such as rockets, jet engines, wind tunnels, turbines, compressors, nozzles, diffusers, valves, pipes, ducts, wings, etc.


Why is Gas Dynamics Important?




Gas dynamics is important because it has many applications and benefits in various fields of science and engineering. Some of them are:


  • Aerospace engineering: Gas dynamics is essential for designing and analyzing rockets, jet engines, missiles, aircraft, spacecraft, satellites, etc. It helps to understand the aerodynamics, propulsion, performance, stability, control, and noise of these vehicles and systems.



  • Mechanical engineering: Gas dynamics is important for designing and optimizing various components and devices that involve gas flow, such as turbines, compressors, nozzles, diffusers, valves, pipes, ducts, etc. It helps to improve the efficiency, reliability, safety, and durability of these machines and equipment.



  • Chemical engineering: Gas dynamics is relevant for studying and modeling various chemical processes that involve gas flow, such as combustion, gasification, pyrolysis, catalysis, etc. It helps to understand the kinetics, thermodynamics, heat transfer, mass transfer, and reaction mechanisms of these processes.



  • Applied physics: Gas dynamics is useful for exploring and explaining various physical phenomena that involve gas flow, such as shock waves, expansion waves, sonic booms, supersonic flows, hypersonic flows, transonic flows, subsonic flows, choked flows, isentropic flows, Fanno flows, Rayleigh flows, potential flows, rarefied flows, high-temperature flows, etc. It helps to develop and test various theories and models of these phenomena.



What are the Main Topics Covered in the Book?




The book Gas Dynamics by Ethirajan Rathakrishnan covers all the vital topics and issues associated with gas dynamic processes. It is divided into 12 chapters and 4 appendices. The main topics covered in the book are:


Isentropic Process




An isentropic process is a process in which the entropy of the fluid remains constant. This means that the process is reversible and adiabatic (no heat transfer). An isentropic process is an idealization that simplifies the analysis of gas flow. The book introduces the concept of isentropic process and derives the equations for pressure ratio, temperature ratio, density ratio, velocity ratio, Mach number ratio, stagnation pressure ratio, stagnation temperature ratio, stagnation density ratio, stagnation enthalpy ratio, and stagnation entropy ratio for an isentropic process.


Shock and Expansion Process




A shock wave is a discontinuity in the flow properties of a gas that occurs when the gas undergoes a sudden compression due to an obstacle or a change in cross-sectional area. An expansion wave is a discontinuity in the flow properties of a gas that occurs when the gas undergoes a sudden expansion due to a change in cross-sectional area or a corner. Shock and expansion waves are irreversible and non-adiabatic processes that involve losses of total pressure and entropy generation. The book introduces the concept of shock and expansion waves and derives the equations for normal shock relations, oblique shock relations, Prandtl-Meyer function, Prandtl-Meyer expansion fan, and shock-expansion theory.


Fanno and Rayleigh Flows




A Fanno flow is a steady adiabatic flow of a compressible fluid in a constant-area duct with friction. A Rayleigh flow is a steady adiabatic flow of a compressible fluid in a variable-area duct with heat transfer. Fanno and Rayleigh flows are irreversible processes that involve changes in total pressure and entropy. The book introduces the concept of Fanno and Rayleigh flows and derives the equations for Fanno line, Fanno flow relations, Rayleigh line, Rayleigh flow relations, and choking conditions.


Potential Equation for Compressible Flow




A potential equation for compressible flow is an equation that relates the velocity potential function to the speed of sound in a compressible fluid. A potential equation for compressible flow can be used to solve various problems involving irrotational (no vorticity) and inviscid (no viscosity) flows. The book introduces the concept of potential equation for compressible flow and derives the equations for subsonic potential equation, transonic potential equation, supersonic potential equation, method of characteristics, and linearized potential equation.


Internal and External Flows




An internal flow is a flow that occurs inside a bounded region or a conduit. An external flow is a flow that occurs outside a bounded region or around a body. Internal and external flows have different characteristics and applications in gas dynamics. The book introduces the concept of internal and external flows and discusses various examples of devices involving internal and external flows such as thrust producing rocket nozzles, lift generating airfoils, drag reducing supersonic wings, and shock wave boundary layer interactions.


Rarefied Gas Dynamics and High-Temperature Gas Dynamics




How to Download the Book for Free?




If you are interested in reading the book Gas Dynamics by Ethirajan Rathakrishnan, you might be wondering how to download it for free. Well, there are several sources where you can find the PDF version of the book for free. However, you should be aware that downloading copyrighted books without permission might be illegal in some countries. Therefore, we recommend that you buy the book from a legitimate source if you can afford it.


That being said, here are some of the sources where you can download the book for free:


Google Books




Google Books is a service that allows you to search and preview millions of books online. Some of the books are available for full view or download, while others are only available for snippet view or no view. The book Gas Dynamics by Ethirajan Rathakrishnan is available for full view on Google Books. Here are the steps to download it:


  • Go to this link to access the book on Google Books.



  • Click on the gear icon on the top right corner and select "Download PDF".



  • A new tab will open with the PDF file of the book. You can save it to your device or print it.



Internet Archive




Internet Archive is a non-profit digital library that offers free access to millions of books, movies, music, software, and websites. It also has a collection of scanned books that you can borrow or download. The book Gas Dynamics by Ethirajan Rathakrishnan is available for download on Internet Archive. Here are the steps to download it:


  • Go to this link to access the book on Internet Archive.



  • Click on the "PDF" button on the right side of the page.



  • A new tab will open with the PDF file of the book. You can save it to your device or print it.



Scribd




Scribd is a subscription-based service that offers unlimited access to millions of books, audiobooks, magazines, podcasts, and documents. You can also upload your own documents and share them with others. The book Gas Dynamics by Ethirajan Rathakrishnan is available for download on Scribd. Here are the steps to download it:


  • Go to this link to access the book on Scribd.



  • If you don't have a Scribd account, you can sign up for a free trial or use your Facebook or Google account to log in.



  • Click on the "Download" button on the top right corner of the page.



  • A new tab will open with the PDF file of the book. You can save it to your device or print it.



Conclusion




In this article, we have given you an overview of what gas dynamics is, why it is important, what are the main topics covered in the book Gas Dynamics by Ethirajan Rathakrishnan, and how to download it for free from various sources. We hope that you have found this article useful and informative.


If you want to learn more about gas dynamics and its applications, we highly recommend that you read this book. It is one of the best books on gas dynamics that provides a comprehensive and readable approach to the subject. It will help you master all the vital concepts and skills of gas dynamics and prepare you for advanced studies and research in this field.


So, what are you waiting for? Download the book now and start learning gas dynamics!


Frequently Asked Questions




Here are some of the frequently asked questions about gas dynamics and the book:


What is the difference between gas dynamics and fluid dynamics?




Fluid dynamics is a general term that covers the study of the flow of fluids, such as liquids and gases. Gas dynamics is a specific branch of fluid dynamics that deals with the flow of gases under conditions where both density and temperature changes are significant.


What are the prerequisites for studying gas dynamics?




The prerequisites for studying gas dynamics are basic knowledge of mathematics, physics, and thermodynamics. You should be familiar with concepts such as calculus, differential equations, vectors, forces, energy, entropy, heat transfer, etc.


What are the benefits of studying gas dynamics?




The benefits of studying gas dynamics are that you will be able to understand and analyze various phenomena and processes involving gas flow, such as shock waves, expansion waves, sonic booms, supersonic flows, hypersonic flows, etc. You will also be able to design and optimize various devices and systems that involve gas flow, such as rockets, jet engines, wind tunnels, turbines, compressors, nozzles, diffusers, valves, pipes, ducts, wings, etc.


Who is the author of the book Gas Dynamics by Ethirajan Rathakrishnan?




The author of the book Gas Dynamics by Ethirajan Rathakrishnan is a professor and head of the Department of Aerospace Engineering at the Indian Institute of Technology Kanpur. He is also the director of the High Speed Aerodynamics Laboratory and the National Wind Tunnel Facility at IIT Kanpur. He has more than 40 years of teaching and research experience in gas dynamics and has published more than 200 papers and 10 books on the subject.


How can I buy the book Gas Dynamics by Ethirajan Rathakrishnan?




You can buy the book Gas Dynamics by Ethirajan Rathakrishnan from various online platforms, such as Amazon, Flipkart, Wiley, etc. You can also buy it from your local bookstore or library. The price of the book may vary depending on the edition and the seller. 71b2f0854b


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