This book systematically investigates the vibration and enhanced heat transfer of elastic tube bundles in heat exchangers. Using numerical calculation methods, it explores the working principles, optimization design, and performance enhancement of elastic tube bundle heat exchangers. The book presents research findings with clear illustrations and detailed analysis, allowing readers to gain a deep understanding and practical application of the subject. Whether from an academic research or engineering practice perspective, this book serves as a valuable reference and guide. It provides readers with insight and guidance on both theoretical and practical aspects of the field. With its comprehensive coverage and practical approach, this book is essential reading for researchers, engineers, and students interested in the vibration and heat transfer of elastic tube bundles in heat exchangers.