Jun Yao – författare

This book solves the open problems in fluid flow modeling through the fractured vuggy carbonate reservoirs. Fractured vuggy carbonate reservoirs usually have complex pore structures, which contain not only matrix and fractures but also the vugs and cavities. Since the vugs and cavities are irregular in shape and vary in diameter from millimeters to meters, modeling fluid flow through fractured vuggy porous media is still a challenge. The existing modeling theory and methods are not suitable for such reservoir. It starts from the concept of discrete fracture and fracture-vug networks model, and then develops the corresponding mathematical models and numerical methods, including discrete fracture model, discrete fracture-vug model, hybrid model and multiscale models. Based on these discrete porous media models, some equivalent medium models and methods are also discussed. All the modeling and methods shared in this book offer the key recent solutions into this area.

This book was compiled by researchers of Chinese Academy of Forestry, Sichuan Agricultural University, Southwest Forestry University, Kunming University of Science and Technology, and Chinese Academy of Sciences. It has been the most comprehensive monograph about the bamboo resources in China until now.

"Illustrated Flora of Bambusoideae in China" is composed of two volumes. Volume 1 contains prefaces written by Shougong Zhang and Dezhu Li and the foreword by the authors,  and 28 chapters, i.e., Morphology of Bamboos, Geographical Distribution of Bambusoideae, Hardiness Zones of Bambusoideae in China, 16 genera of the tribe Bambusese (Bambusa, Bonia, Cephalostachyum, Dendrocalamopsis, Dendrocalamus, Gigantochloa, Guadua, Leptocanna, Lingnania, Melocalamus, Melocanna,  Neomicrocalamus, Neosinocalamus, Pseudostachyum, Schizostachyum, Thyrsostachys), and 9 genera of the tribe Arundinarieae (Brachystachyum, Chimonobambusa, Hibanobambusa, Indosasa, Phyllostachys,Qiongzhuea, Semiarundinaria, Shibataea, Sinobambusa). Totally, 512 bamboo taxa are recorded in volume 1, including 4 hybrids, 119 forms, 38 varieties, and 351 species in 25 genera.

This book was compiled by researchers of Chinese Academy of Forestry, Sichuan Agricultural University, Chinese Academy of Sciences, Southwest Forestry University, and Kunming University of Science and Technology. It has been the most comprehensive monograph about the bamboo resources in China until now. 

"Illustrated Flora of Bambusoideae in China" is composed of two volumes. Volume 2 consists of 18 chapters corresponding to 18 genera of the tribe Arundinarieae (i.e., Acidosasa, Ampelocalamus, Bashania, Chimonocalamus, Drepanostachyum, Fargesia, Ferrocalamus, Gaoligongshania, Gelidocalamus, Indocalamus, Menstruocalamus, Oligostachyum, Pleioblastus, Pseudosasa, Sasa, Sasaella, Thamnocalamus, Yushania). Sixteen forms, 17 varieties, and 397 species in 18 genera are included in this volume (430 taxa in total).

This book focuses on green mine evaluation. It includes green mine evaluation methods, evaluation content, evaluation indicators, etc. The "Green Mine Evaluation Index" has been issued by the Ministry of Natural Resources of China. In order to promote mining enterprises, green mine consulting service agencies, third-party evaluation agencies and mining administration personnel to better understand and practice the provisions of green mine evaluation indicators, the authors wrote this "Interpretation of Green Mine Evaluation Index". The content of this book specifically includes introduction, prerequisites for green mine selection, score sheet of green mine construction, related knowledge, as well as introduction of specific green mine evaluation items, including mining area environment, resource development methods, comprehensive utilization of ore resources, energy saving and emission reduction, technological innovation and smart mines, corporate management and corporate image, etc. The relevant concepts, relevant laws and policies, implementation measures, inspection points, and materials that enterprises should provide, have been vividly expounded based on the actual situation and specific cases of green mine construction. This book is useful as a reference for managers, engineering and technical personnels, teachers and students from mining enterprises, government departments, consulting services and evaluation agencies, colleges and secondary professional schools.  

This book is a compilation of selected papers from the 16th Annual Meeting Conference on Porous Media (InterPore 2024). The work focuses on novel techniques for porous media materials, transport mechanisms in porous media, multiscale multiphysics, pore-scale modeling, and porous media mechanics. The contents make valuable contributions to academic researchers, engineers in the industry, and regulators of aviation authorities. As well, readers will encounter new ideas for problems in porous media science and engineering.

This book provides a theoretical basis and technical support for carbonate acid stimulation design. Carbonate reservoirs are one of the most important sources of fossil fuels. Acid stimulation is an effective technique for enhancing reservoir performance and boosting production. The book stands as a fundamental guide in implementing acid stimulation techniques in carbonate reservoirs. It models the acid stimulation process, contemplating mass, momentum, and energy changes alongside the real mineral composition of the carbonate rock matrix. Comprehensive sensitivity studies are conducted to elucidate the targeted mechanisms and optimization principles for designing acid stimulation applications in carbonate reservoirs. This book also serves as an excellent foundation for numerical simulation, providing detailed descriptions of how finite volume methods and sequential decoupling algorithms are utilized for numerical discretization and solving decoupled solutions on staggered grids. This book is an essential reference for reservoir engineers, academics, and students interested in studying and performing acid stimulation in carbonate reservoirs. It also helps readers obtain an understanding of modeling reactive flow in porous media with coupling multi-physical fields, including hydrologic–chemical-thermal processes and multi-scale characteristics. In addition, this book also delves into scale-up methods, such as the fundamental theoretical foundations and important theorems of the volume averaging approach. The book is used as a textbook for senior undergraduate and graduate courses in petroleum engineering. 

This book investigates in detail the mathematical methods and computation methods in efficient solution of some open nonlinear seepage flow problems involved in engineering problems. Developed engineering technologies and some relevant practical field applications are also provided. The introduced open nonlinear problems include nonlinear quadratic pressure gradient term problem, compressible gas seepage flow problem and low-velocity non-Darcy seepage flow problem. Studies on these nonlinear seepage flow problems have attracted engineers and scientists from various disciplines, such as geo-energy engineering, civil and environmental engineering, fluid mechanics, applied mathematics and computation. In particular, the book systematically establishes a fundamental theory for a strongly nonlinear problem of low-velocity non-Darcy seepage flow from a new perspective of moving boundary, while emphasizing the usage of mathematical linearization transformation methods and computational methods into the analytical and numerical solution of the strongly nonlinear partial differential equations. Sufficient knowledge of mathematics is always introduced ahead of model solution to assist readers. And the procedure of strict formula deduction in the model solution process is provided in detail. High-solution figures and tables from model solution are rich in the book. Therefore, it is very helpful for the readers to master the nonlinear model solution methods and engineering technologies. The book is intended for upper undergraduate students and graduate students who are interested in engineering technology, fluid mechanics and applied mathematics, researchers and engineers working on geo-energy science and engineering and field applications.