The book "Non-stationary hydromechanical processes" by Dmitry Nikolaevich Popov is a fascinating and in-depth study devoted to one of the most complex and topical topics in the field of hydromechanics. This work not only enriches the knowledge of readers about the dynamics of liquids and gases, but also opens up new horizons for specialists, students and anyone interested in physics and engineering. In his book, Popov explores the phenomena associated with changes in the state of liquids and gases that occur in time and space. It immerses the reader in a world where each process has its own unique characteristics and patterns. The author suggests readers to consider how various factors, such as pressure, temperature and flow rate, affect the behavior of liquids and gases in different conditions. This topic is especially relevant for engineers working in the field of water supply, oil and gas industry and ecology, as well as for students studying mechanical and physical sciences. The book will be of interest to both professional engineers and senior students who seek to deepen their knowledge in hydromechanics. It can also attract the attention of researchers involved in the modeling and forecasting of hydrodynamic processes. If you are looking for literature on topics related to fluid dynamics, hydraulics or continuum mechanics, then this publication will be a real find for you. One of the key topics raised in the book is the study of unstable processes in various systems. Popov not only describes the theoretical aspects, but also gives practical examples, which makes the material accessible and understandable. He focuses on the importance of mathematical modeling for understanding complex hydromechanical phenomena. Readers will be able to see how mathematical equations and models help predict the behavior of liquids and gases in real-world conditions, which is an important aspect for the development of new technologies and solutions in engineering. The author’s style is distinguished by clarity and logical presentation . Popov skillfully combines theory with practical examples, which allows readers not only to assimilate information, but also to apply it in practice. His previous works, such as Hydrodynamics and Solid Environment Mechanics, have also been recognized for their in-depth approach to complex topics and the availability of presentation. In Nonstationary Hydromechanical Processes, he continues this tradition by offering readers a unique perspective on the dynamics of liquids and gases. The book "Non-stationary hydromechanical processes" will be not only a useful tutorial, but also a real source of inspiration for those who want to understand the mechanisms that govern our world more deeply. It will help readers develop the critical thinking and analytical skills needed to solve complex problems in the field of hydromechanics. If you are looking for literature that will help you understand the complex phenomena associated with the dynamics of liquids and gases, or want to expand your knowledge in the field of engineering and physics, then Dmitry Nikolaevich Popov’s Nonstationary Hydromechanical Processes is what you need. Do not miss the opportunity to immerse yourself in the world of hydromechanics and discover new horizons of knowledge!