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1. Chemical Kinetics of Hydrogen Combustion

Author

Undavalli, Vamsi Krishna, Berwal, Pragya, Khandelwal, Bhupendra, Agarwal, Avinash Kumar, Series Editor, Kumar, Sudarshan, editor, Agarwal, Avinash K., editor, Khandelwal, Bhupendra, editor, and Singh, Paramvir, editor

Published
2024
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7. List of contributors

Author

Abraham, Ajith, primary, Agarwal, Vernika, additional, Ahmed, Waqar, additional, Aiba, Umme, additional, Bhutani, Ritambhara, additional, Bora, Bhaskor Jyoti, additional, Borugadda, Venu Babu, additional, Chaudhary, Nidhee, additional, Chinyere, Anagbogu Florence, additional, Dalai, Ajay K, additional, Darvishi, Yousef, additional, Das, Ashok K., additional, Dhar, Atul, additional, Duvvuri, Pavan Prakash, additional, Faruk Görçün, Ömer, additional, Ghasemi, Peiman, additional, Goodarzian, Fariba, additional, Gul, M., additional, Gurrani, Swapnil, additional, Inambao, Freddie, additional, Jain, Akshay, additional, Jeyaseelan, Christine, additional, Kalam, Abul, additional, Karami, Hamed, additional, Kaul, Arshia, additional, Kaushal, Rajneesh, additional, Khandelwal, Bhupendra, additional, Küçükönder, Hande, additional, Kumar, Niraj, additional, Kumar, Parmod, additional, Kumar, Rakesh, additional, Kumar, Sudarshan, additional, Kumar, Vineet, additional, Masjuki, H.H., additional, Mujtaba, M.A., additional, Muñuzuri, Jesús, additional, No, Soo-Young, additional, Paul, Debarati, additional, Razzaq, Luqman, additional, Roy, Sukanta, additional, Sahu, Saket, additional, Saluja, Rajesh Kumar, additional, Saxena, Vinod Kumar, additional, Saxena, Vishal, additional, Sham, Radhey, additional, Sharma, Ayushi, additional, Sharma, Saurabh, additional, Shukla, Shailendra K., additional, Shukla, Shiv Kant, additional, Shukla, Susmita, additional, Singh, Paramvir, additional, Soudagar, Manzoore Elahi M., additional, Srivastava, Alankrit, additional, Tirumareddy, Priyanka, additional, Undavalli, Vamsi Krishna, additional, and Verma, Shivani, additional

Published
2023
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11. Experimental Investigation of Aromatic Blended Binary Fuel on Pollutant Emissions from Compression Ignition Engine

Author

Singh, Paramvir, Sharma, Saurabh, Almohammadi, Bandar Awadh, Kumar, Sudarshan, Khandelwal, Bhupendra, Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, Gupta, Ashwani K., editor, Mongia, Hukam C., editor, Chandna, Pankaj, editor, and Sachdeva, Gulshan, editor

Published
2021
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14. Impact of Aromatic Hydrocarbons on Emissions in a Custom-Built High-Pressure Combustor.

Author

Yu, Qiming and Khandelwal, Bhupendra

Subjects
*GAS turbine combustion, *PARTICULATE matter, *AROMATIC compounds, *CARBON monoxide, *HIGH temperatures
Abstract

This study addresses the ongoing demand for increased efficiency and reduced emissions in turbomachinery combustion systems. A custom-built high-pressure combustor was designed and manufactured at the Low Carbon Combustion Centre (LCCC) of the University of Sheffield to investigate the impact of different aromatic hydrocarbons on emission rates. The research involved the comprehensive testing of Jet−A1 fuel and six aromatic species blends under high-pressure conditions of 10 bar. Based on the numerical CFD simulations by ANSYS 19.2, tangential dual air injection and a strategically placed V-shaped baffle plate were utilised to enhance fuel-air mixing and combustion stability. Experimental results demonstrated a negative correlation between combustion temperature and particulate matter (PM) emissions, with higher temperatures yielding lower PM emissions. Unburned hydrocarbons (UHCs), nitrogen oxides ( N O x ), carbon monoxide ( C O ), and carbon dioxide ( C O 2 ) emissions were also analysed. Ethylbenzene produced the highest UHC and C O emissions, while Indane exhibited the lowest levels of these pollutants, suggesting more complete combustion. O−xylene generated the highest N O x emissions, correlating with its higher combustion temperatures. This research enhances our understanding of gas turbine combustor design and the combustion behaviour of aromatic species, providing valuable insights for developing low-emission, high-efficiency gas turbine combustion technologies. [ABSTRACT FROM AUTHOR]

Published
2024
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17. IN MEMORIAM: PROFESSOR DARRELL W. PEPPER – A TRIBUTE TO AN EXCEPTIONAL ENGINEERING EDUCATOR AND RESEARCHER

Author

Runchal, Akshai K., primary, Carrington, David B., additional, Sherif, S. A., additional, Chiu, Wilson K. S., additional, Longtin, Jon P., additional, Battaglia, Francine, additional, Tao, Yongxin, additional, Jaluria, Yogesh, additional, Plesniak, Michael W., additional, Klausner, James F., additional, Prasad, Vish, additional, Kassab, Alain J., additional, Lloyd, John R., additional, Shafeyeva, Yelena, additional, Strasser, Wayne, additional, Cremaschi, Lorenzo, additional, Shih, Tom I-P., additional, Abdel-Salam, Tarek, additional, Amano, Ryoichi Samuel, additional, Gupta, Ashwani K., additional, Ozalp, Nesrin, additional, Wang, Ting, additional, Anderson, Kevin R., additional, Aggarwal, Suresh K., additional, Acharya, Sumanta, additional, Mashayek, Farzad, additional, Michaelides, Efstathios E., additional, Khandelwal, Bhupendra, additional, Wang, Xiuling, additional, Hajimirza, Shima, additional, Dowding, Kevin J., additional, Mazumder, Sandip, additional, Divo, Eduardo A., additional, Douglass, Rod, additional, Hogan, Roy E., additional, Hansen, Glen, additional, Beale, Steven B., additional, Nithiarasu, Perumal, additional, Vanka, Surya Pratap, additional, Cotta, Renato M., additional, Reizes, John A., additional, Timchenko, Victoria, additional, De, Ashoke, additional, Woodbury, Keith A, additional, Tencer, John T., additional, Wemhoff, Aaron P., additional, Jones, Gerard F., additional, Chen, Leitao, additional, Fisher, Timothy S., additional, Boetcher, Sandra K. S., additional, Oosthuizen, Patrick H., additional, Najafi, Hamidreza, additional, Webb, Brent W., additional, Sadhal, Satwindar Singh, additional, and Abdelmessih, Amanie, additional

Published
2024
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18. Lean Blowout Studies

Author

Rock, Nicholas, primary, Stouffer, Scott, additional, Hendershott, Tyler, additional, Heyne, Joshua, additional, Blunck, David, additional, Zheng, Lukai, additional, Khandelwal, Bhupendra, additional, Emerson, Benjamin, additional, Mastorakos, Epaminondas, additional, and Colket, Meredith, additional

Published
2021
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19. Fuel Impacts on Combustor Efficiency and Emissions

Author

Corporan, Edwin, primary, Khandelwal, Bhupendra, additional, Zheng, Lukai, additional, Chishty, Wajid, additional, Canteenwalla, Pervez, additional, Chan, Tak W., additional, Culbertson, Brad, additional, DeWitt, Matthew, additional, Klingshirn, Chris, additional, and West, Zach, additional

Published
2021
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31. Contributors

Author

Almohammadi, Bandar Awadh, primary, Dwyer, Matthew, additional, Ghali, Pierre, additional, Gierulski, Maciej Piotr, additional, Hamilton, Jerry, additional, Khandelwal, Bhupendra, additional, Lei, Huanrong, additional, Ling, Chenxing, additional, Sadat, Yousef, additional, Undavalli, Vamsi Krishna, additional, Wijesinghe, Charith J., additional, and Zheng, L., additional

Published
2021
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36. Development of gas turbine combustor preliminary design methodologies and preliminary assessments of advanced low emission combustor concepts

Author

Khandelwal, Bhupendra, Singh, R., and Sethi, Vishal

Subjects
621.43, Combustor, Gas Turbine Combustor Design, Novel Combustors, Hydrogen synthesis, kerosene reforming, Hydrogen enriched combustion
Abstract

It is widely accepted that climate change is a very serious environmental concern. Levels of carbon dioxide (CO2) and other emissions in the global atmosphere have increased substantially since the industrial revolution and now increasing faster than ever before. There is a thought that this has already led to dangerous warming in the Earth’s atmosphere and relevant changes around. Emissions legislations are going to be stringent as the years will pass. Hydro carbon fuel cost is also increasing substantially; more over this is non- renewable source of energy. There is an urgent need for novel combustor technologies for reducing emission as well as exploring alternative renewable fuels without effecting combustor performance. Development of novel combustors needs comprehensive understanding of conventional combustors. The design and development of gas turbine combustors is a crucial but uncertain part of an engine development process. At present, the design process relies upon a wealth of experimental data and correlations. Some major engine manufacturers have addressed the above problem by developing computer programs based on tests and empirical data to assist combustor designers, but such programs are proprietary. There is a need of developing design methodologies for combustors which would lead to substantial contribution to knowledge in field of combustors. Developed design methodologies would be useful for researchers for preliminary design assessments of a gas turbine combustor. In this study, step by step design methodologies of dual annular radial and axial combustor, triple annular combustor and reverse flow combustor have been developed. Design methodologies developed could be used to carry out preliminary design along with performance analysis for conventional combustion chambers. In this study the author has also proposed and undertaken preliminary studies of some novel combustor concepts. A novel concept of a dilution zone less combustor has been proposed in this study. According to this concept dilution air would be introduced through nozzle guide vanes to provide an optimum temperature traverse for turbine blades. Preliminary study on novel dilution zone less combustor predicts that the length of this combustor would be shorter compared to conventional case, resulting in reduced weight, fuel burn and vibrations. Reduced fuel burn eventually leads to lower emissions. Another novel concept of combustor with hydrogen synthesis from kerosene reformation has been proposed and a preliminary studies has been undertaken in this work. Addition of hydrogen as an additive in gas turbine combustor shows large benefits to the performance of gas turbine engines in addition to reduction in NOx levels. The novel combustor would have two stages, combustion of ~5% of the hydrocarbon fuel would occur in the first stage at higher equivalence ratios in the presence of a catalyst, which would eventually lead to the formation of hydrogen rich flue gases. In the subsequent stage the hydrogen rich flue gases from the first stage would act as an additive to combustion of the hydrocarbon fuel. It has been preliminary estimated that the mixture of the hydrocarbon fuel and air could subsequently be burned at much lower equivalence ratios than conventional cases, giving better temperature profiles, flame stability limits and lower NOx emissions. The effect of different geometrical parameters on the performance of vortex controlled hybrid diffuser has also been studied. It has been predicted that vortex chamber in vortex controlled hybrid diffuser does not play any role in altering the performance of diffuser. The overall contribution to knowledge of this study is development of combustor preliminary design methodologies with different variants. The other contribution to knowledge is related to novel combustors with a capability to produce low emissions. Study on novel combustor and diffuser has yielded application of two patent applications with several other publications which has resulted in a contribution to knowledge. A list of research articles, two patents, awards and achievements are presented in Appendix C.

Published
2012

37. In Memoriam: Professor Essam E. Khalil —A Tribute to An Outstanding Educator and Researcher

Author

Awad, Mohamed M., primary, Sherif, S. A., additional, Khalil, Heba Allah Essam E., additional, Khalil, Adel, additional, Shih, Tom I-P., additional, Abdelaziz, Omar, additional, Abdel-Salam, Tarek, additional, Amano, Ryo S., additional, Gupta, Ashwani K., additional, Brooks, Michael, additional, Khandelwal, Bhupendra, additional, Ozalp, Nesrin, additional, Carrington, David, additional, Aggarwal, Suresh K., additional, Acharya, Sumanta, additional, Mashayek, Farzad, additional, Wang, Xiuling, additional, and Lear, William E., additional

Published
2023
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42. Recent advancements in sustainable aviation fuels

Author

Undavalli, Vamsikrishna, primary, Gbadamosi Olatunde, Olanrewaju Bilikis, additional, Boylu, Rahim, additional, Wei, Chuming, additional, Haeker, Josh, additional, Hamilton, Jerry, additional, and Khandelwal, Bhupendra, additional

Published
2023
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45. Aviation Fuels

Author

Khandelwal, Bhupendra, Khandelwal, Bhupendra, Khandelwal, Bhupendra, and Khandelwal, Bhupendra

Abstract

Aviation Fuels provides up-to-date data on fuel effects on combustion performance and use of alternative fuels in aircraft. This book covers the latest advances on aviation fuel technologies, including alternative fuels, feedstocks and manufacturing processes, combustion performance, chemical modeling, fuel systems compatibility and the technical and environmental challenges for implementing the use of alternative fuels for aviation. Aviation fuel and combustion researchers, academics, and program managers for aviation technologies will value this comprehensive overview and summary on the present status of aviation fuels. Presents an overview on all relevant fields of aviation fuels, including production, approval, fuel systems compatibility and combustion (including emissions) Discusses the environmental impacts and carbon footprint of alternative fuels Features a chapter on electric flight and hydrogen powered aircraft and how its implementation will impact the aviation industry

Published
2021

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