Selected Works . Volume 1. Hydrodynamics. Modeling principles, automodel and conical currents" by C. K. Betyaeva is a unique work that immerses the reader in the world of hydrodynamics - one of the most complex and fascinating areas of physics. This volume, as the first part of an extensive series, gathers not only the theoretical foundations but also the practical aspects of modeling, making it an indispensable source of knowledge for students, graduate students, and specialists in fluid mechanics. The book discusses the key principles of hydrodynamics that underlie the modeling of various currents. The author shares his in-depth knowledge based on many years of research and teaching. The reader will be able to learn about such important topics as automodel currents, conic currents and their application in real-world tasks. Betyaev not only outlines the theory, but also demonstrates how these principles can be used to solve practical problems, which makes the book especially valuable for engineers and scientists. This book will be of interest not only to students of technical specialties, but also to everyone who is passionate about physics and mathematics. If you are looking for a deep understanding of hydrodynamic processes, the “Selected Works” will be a real discovery for you. It is suitable for those who are just starting to study this area, and for experienced professionals who want to deepen their knowledge and get acquainted with new approaches to modeling. The topics raised in the book cover a wide range of issues, ranging from the basics of hydrodynamics to complex flow models. Betyaev focuses on the importance of mathematical modeling in modern research, which makes his work relevant in the light of the latest achievements of science and technology. The book not only explains the theoretical aspects, but also offers the reader a lot of examples, which contributes to better assimilation of the material. The author's style is distinguished by clarity and accessibility, which makes it easy to perceive even the most complex concepts. C. K. Betyaev is a well-known scientist and teacher, whose work has long won recognition in the scientific community. His other well-known works are also devoted to hydrodynamics and mechanics, and they are popular among students and researchers. In this book, he continues his tradition of sharing knowledge and experience, making his work an important contribution to the development of science. If you are looking for a literature on hydrodynamics that combines theory and practice, then "Selected Works. Volume 1. Hydrodynamics. Modeling principles, self-modeling and conical currents" is what you need. This book will become a reliable assistant in your training and professional activities, opening up new horizons in understanding the complex processes occurring in liquids. Do not miss the opportunity to immerse yourself in the world of hydrodynamics with C. K. Betyaev and discover fascinating aspects of modeling currents that can change your understanding of fluid mechanics.