Results 21 to 30 of about 3,357 (178)

Air Breathing Propulsion Controls and Diagnostics Research at NASA Glenn Under NASA Aeronautics Research Mission Programs [PDF]

The Intelligent Control and Autonomy Branch (ICA) at NASA (National Aeronautics and Space Administration) Glenn Research Center (GRC) in Cleveland, Ohio, is leading and participating in various projects in partnership with other organizations within GRC ...
Garg, Sanjay
core   +5 more sources

Atmospheric potential oxygen: New observations and their implications for some atmospheric and oceanic models [PDF]

, 2006
Measurements of atmospheric O2/N2 ratios and CO2 concentrations can be combined into a tracer known as atmospheric potential oxygen (APO ≈ O2/N2 + CO2) that is conservative with respect to terrestrial biological activity.
Andres, Andrew C. Manning, Battle, Battle, Bender, Bender, Bender, Bill Paplawsky, Caroline Simonds, Conway, David T. Ho, Denning, Garcia, Gloor, Gruber, Gurney, Kalnay, Keeling, Keeling, Keeling, Keeling, Keeling, Mahlman, Mark Battle, Marland, Marland, Melissa B. Hendricks, Michael L. Bender, Najjar, Nicolas Gruber, Pieter P. Tans, Ralph F. Keeling, Robert Mika, Sara Mikaloff Fletcher, Stephens, Takahashi, Tans, Thoning, Tohjima   +38 more
core   +2 more sources

Exergy Analysis of Gas Turbine Open Cycle with Pressure Gain Combustion Based on Humphrey Cycle

Journal of Physics: Conference Series
This paper describes an exergy comparison of the pressure gain combustion (PGC) gas turbine (GT) with conventional GT. PGC has recently emerged as a promising approach to achieve major performance improvements in the current gas turbines operating on the
Abhishek Dubey, A. Sorce
semanticscholar   +1 more source

A Comparison of Steady-State Models for Pressure Gain Combustion in Gas Turbine Performance Simulation

, 2019
Pressure gain combustion (PGC) is widely considered to improve gas turbine thermal efficiency substantially. However, there is no consensus on the modelling in gas turbine performance simulation.
Nicolai Neumann, D. Woelki, D. Peitsch
semanticscholar   +1 more source

Performance and Exergy analysis of TurboJet and TurboFan configurations with Rotating Detonation Combustor

International Journal of Thermofluids
Conventional gas turbine is reaching its saturation level and further improvement in the cycle efficiency is possible through redesigning the cycle. One of the effective methods is to introduce a Pressure Gain Combustor (PGC) in place of the conventional
Gokkul Raj Varatharajulu Purgunan, Panagiotis Stathopoulos   +1 more
doaj   +1 more source

Congo Basin Carbon Cycle Responses to Global Change

Global Change Biology, Volume 32, Issue 1, January 2026.
Understanding the resilience of the Congo Basin carbon cycle in the face of current and future pressures requires a detailed understanding of its response to past and present drivers of change. Building on a pantropical framework of drivers and possible regional mechanisms for resilience, this review provides the first comprehensive assessment of Congo
Sarah Worden, Rong Fu, A. Anthony Bloom, Marijn Bauters, Hans Verbeeck, Temilola Fatoyinbo, Wannes Hubau, Lydie‐Stella Koutika, Steve Kwatcho Kengdo, Sybryn L. Maes, Vincent Medjibe, Nicholas J. Russo, Sassan Saatchi, Le Bienfaiteur Sagang, Thomas B. Smith, Denis J. Sonwa, Pascal Boeckx, Elsa M. Ordway   +17 more
wiley   +1 more source

Determining the Pressure Gain of Pressure Gain Combustion [PDF]

Over the past few decades, there has been significant research into propulsion concepts attempting to employ pressure gain combustion. Pressure gain combustion concepts to date have resulted in dynamic, non-uniform gas flows which are difficult to ...
Paxson D.E., Paxson D.E., Paxson D.E., Paxson D.E., Paxson D.E., Paxson D.E., Perkins H.D.   +6 more
core   +2 more sources

Implementation and Evaluation of Emission‐Driven Land‐Atmosphere Coupled Simulation in E3SMv2.1

Journal of Advances in Modeling Earth Systems, Volume 17, Issue 12, December 2025.
Abstract Emissions‐driven (prognostic CO2) simulations are essential for representing two‐way carbon‐climate feedback in Earth System Models. We present an emissions‐driven land–atmosphere coupled biogeochemistry (BGC) configuration (BGCLNDATM_progCO2) in version 2.1 of the Energy Exascale Earth System Model (E3SMv2.1).
Sha Feng, Bryce E. Harrop, Daniel M. Ricciuto, Susannah M. Burrows, Qing Zhu, Wuyin Lin, Nathan Collier, Ben Bond‐Lamberty, Chengzhu (Jill) Zhang, Ryan M. Forsyth, Jonathan D. Wolfe, Xiaoying Shi, Peter E. Thornton, Yohei Takano, Mathew E. Maltrud, Balwinder Singh, Yilin Fang, Jennifer A. Holm, Nicole Jeffery, L. Ruby Leung   +19 more
wiley   +1 more source

Advancements in combustion technologies: A review of innovations, methodologies, and practical applications

Energy Conversion and Management: X
This review comprehensively examines key advancements in combustion technologies, multi-scale modeling approaches, and experimental diagnostics, highlighting their contributions to enhancing energy efficiency, reducing emissions, and advancing ...
Abdellatif M. Sadeq, Raad Z. Homod, Husam Abdulrasool Hasan, Bilal Naji Alhasnawi, Ahmed Kadhim Hussein, Ali Jahangiri, Hussein Togun, Masoud Dehghani-Soufi, Shahbaz Abbas   +8 more
doaj   +1 more source

Aerodynamic Investigation of Guide Vane Configurations Downstream a Rotating Detonation Combustor

Journal of Engineering For Gas Turbines and Power, 2020
Any outlet restriction downstream of pressure gain combustion (PGC), such as turbine blades, affects its flow field and may cause additional thermodynamic losses.
M. Asli, P. Stathopoulos, C. Paschereit
semanticscholar   +1 more source