Professor Wang Zhirong, Ph.D. in Engineering, (Level 2) Professor and Doctoral Supervisor, Dean of the College of Emergency Management at Nanjing Tech University, and Dean of Jiangsu Emergency Management College. He is recognized as a leading talent in Science and Technology Innovation under the National Talent Plan, a recipient of the China Youth Science and Technology Award, the leader of both the Jiangsu University Excellent Science and Technology Innovation Team and the Jiangsu Province "Six Talent Peaks" Innovation Team. Additionally, he is honored as a Distinguished Professor of Jiangsu Province, receiving special funding for his contributions.Since joining Nanjing Tech University in 2005, Prof. Wang's career has been characterized by rapid professional advancement and significant contributions to emergency management and safety technology. He was promoted to professor ahead of schedule by 2013 and broadened his academic experience as a visiting professor at the University of Maryland. He has directed over 50 research projects, including one key project and one sub-project under the National Key R&D Program, four projects funded by the National Natural Science Foundation, and over ten provincial and ministerial research projects.Prof. Wang has published over 200 SCI papers as the first author or corresponding author in renowned domestic and international journals, affirming his leadership in emergency management research. He has also played a pivotal role in developing three industry (group) standards. His research outcomes have been included in proposals by the China Association for Science and Technology, publications by the Ministry of Education, and several decision-making advisory newsletters in Jiangsu Province, leading to endorsements from senior leaders of the Jiangsu Provincial Party Committee and Government.Moreover, Prof. Wang occupies significant positions on national and provincial safety, energy, and environmental committees. His extensive work has earned him prestigious awards such as the Gold Medal for Innovation and the National Technological Progress Second Prize, highlighting his substantial impact on science, technology, and education. As a mentor in the national "Challenge Cup" competition, he has excelled in inspiring and guiding the next generation of scientists and engineers, solidifying his role as a cornerstone of scientific innovation and educational excellence. Professor Cao Xingyan, Doctor of Engineering in Chemical Process Machinery, Discipline Professor and Master's Supervisor at the School of Safety Science and Engineering, Nanjing University of Technology, and previously worked at the pressure vessel and pipeline technology foundation department of Hefei General Machinery Research Institute. Vice President of Science and Technology of Jiangsu Province's high level innovation and entrepreneurship talent program. National natural science foundation of china communications review expert. He is the expert in safety production/emergency management review in pukou district of jiangsu province, and the expert in the major special project evaluation of the science and technology departments of shandong and guangdong provinces.Since joining Nanjing Tech University in 2020, aiming at the needs of major national engineering construction, emphasizing the intersection and integration of disciplines, and focusing on the safety of petrochemical processes and equipment, he had long been committed to the basic and applied research of industrial medium explosion disaster theory and prevention technology, as well as process equipment safety control technology. He has successively undertaken projects such as the National Natural Science Foundation, the National Natural Science Youth Fund, the China Postdoctoral Fund, the Jiangsu Province Natural Science Major Project, the Jiangsu Province Postdoctoral Fund Project, and the Central Enterprise Youth Fund Project. As a key member of the project, He has participated in multiple national and Jiangsu Province key research and development projects.Prof. Cao has published over 30 SCI papers as the first author or corresponding author in renowned domestic and international journals and authorized multiple patents, affirming his scholarly competence in industrial safety protection research. He had won multiple first-class awards for technological progress in various industries based on research results.

• Introduction.- Gas explosion characteristics in the confined spaces.- Structure effect of connected vessels on gas explosion characteristics.- Scale effect of gas explosion in the confined space.- DDT propagation characteristics of gas explosion inside the vessel.

Professor Wang Zhirong, Ph.D. in Engineering, (Level 2) Professor and Doctoral Supervisor, Dean of the College of Emergency Management at Nanjing Tech University, and Dean of Jiangsu Emergency Management College. He is recognized as a leading talent in Science and Technology Innovation under the National Talent Plan, a recipient of the China Youth Science and Technology Award, the leader of both the Jiangsu University Excellent Science and Technology Innovation Team and the Jiangsu Province "Six Talent Peaks" Innovation Team. Additionally, he is honored as a Distinguished Professor of Jiangsu Province, receiving special funding for his contributions.Since joining Nanjing Tech University in 2005, Prof. Wang's career has been characterized by rapid professional advancement and significant contributions to emergency management and safety technology. He was promoted to professor ahead of schedule by 2013 and broadened his academic experience as a visiting professor at the University of Maryland. He has directed over 50 research projects, including one key project and one sub-project under the National Key R&D Program, four projects funded by the National Natural Science Foundation, and over ten provincial and ministerial research projects.Prof. Wang has published over 200 SCI papers as the first author or corresponding author in renowned domestic and international journals, affirming his leadership in emergency management research. He has also played a pivotal role in developing three industry (group) standards. His research outcomes have been included in proposals by the China Association for Science and Technology, publications by the Ministry of Education, and several decision-making advisory newsletters in Jiangsu Province, leading to endorsements from senior leaders of the Jiangsu Provincial Party Committee and Government.Moreover, Prof. Wang occupies significant positions on national and provincial safety, energy, and environmental committees. His extensive work has earned him prestigious awards such as the Gold Medal for Innovation and the National Technological Progress Second Prize, highlighting his substantial impact on science, technology, and education. As a mentor in the national "Challenge Cup" competition, he has excelled in inspiring and guiding the next generation of scientists and engineers, solidifying his role as a cornerstone of scientific innovation and educational excellence. Professor Cao Xingyan, Doctor of Engineering in Chemical Process Machinery, Discipline Professor and Master's Supervisor at the School of Safety Science and Engineering, Nanjing University of Technology, and previously worked at the pressure vessel and pipeline technology foundation department of Hefei General Machinery Research Institute. Vice President of Science and Technology of Jiangsu Province's high level innovation and entrepreneurship talent program. National natural science foundation of china communications review expert. He is the expert in safety production/emergency management review in pukou district of jiangsu province, and the expert in the major special project evaluation of the science and technology departments of shandong and guangdong provinces.Since joining Nanjing Tech University in 2020, aiming at the needs of major national engineering construction, emphasizing the intersection and integration of disciplines, and focusing on the safety of petrochemical processes and equipment, he had long been committed to the basic and applied research of industrial medium explosion disaster theory and prevention technology, as well as process equipment safety control technology. He has successively undertaken projects such as the National Natural Science Foundation, the National Natural Science Youth Fund, the China Postdoctoral Fund, the Jiangsu Province Natural Science Major Project, the Jiangsu Province Postdoctoral Fund Project, and the Central Enterprise Youth Fund Project. As a key member of the project, He has participated in multiple national and Jiangsu Province key research and development projects.Prof. Cao has published over 30 SCI papers as the first author or corresponding author in renowned domestic and international journals and authorized multiple patents, affirming his scholarly competence in industrial safety protection research. He had won multiple first-class awards for technological progress in various industries based on research results.

• Introduction.- Gas explosion characteristics in the confined spaces.- Structure effect of connected vessels on gas explosion characteristics.- Scale effect of gas explosion in the confined space.- DDT propagation characteristics of gas explosion inside the vessel.