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Using Mpi Portable Parallel Programming With The Message Passing Interface

https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.358

Current status, challenges, and policy suggestions for coalbed methane industry development in China: A review

Deep learning for topology optimization of 2D metamaterials

The atmospheric methane burden is increasing rapidly, contrary to pathways compatible with the goals of the 2015 United Nations Framework Convention on Climate Change Paris Agreement. Urgent action is required to bring methane back to a pathway more in line with the Paris goals. Emission reduction from “tractable” (easier to mitigate) anthropogenic sources such as the fossil fuel industries and landfills is being much facilitated by technical advances in the past decade, which have radically improved our ability to locate, identify, quantify, and reduce emissions. Measures to reduce emissions from “intractable” (harder to mitigate) anthropogenic sources such as agriculture and biomass burning have received less attention and are also becoming more feasible, including removal from elevated-methane ambient air near to sources. The wider effort to use microbiological and dietary intervention to reduce emissions from cattle (and humans) is not addressed in detail in this essentially geophysical review. Though they cannot replace the need to reach “net-zero” emissions of CO2, significant reductions in the methane burden will ease the timescales needed to reach required CO2 reduction targets for any particular future temperature limit. There is no single magic bullet, but implementation of a wide array of mitigation and emission reduction strategies could substantially cut the global methane burden, at a cost that is relatively low compared to the parallel and necessary measures to reduce CO2, and thereby reduce the atmospheric methane burden back toward pathways consistent with the goals of the Paris Agreement.

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2019RG000675

Methane Mitigation: Methods to Reduce Emissions, on the Path to the Paris Agreement

Deep learning for plasticity and thermo-viscoplasticity

This work is a numerical investigation on the stability of a hydrogen flame in a swirl-stabilized burner configuration using large-eddy simulation with tabulated chemistry. Experimental results from this combustor showed that the axial injection influences the vortex breakdown (VB) position and therefore, the propensity of the burner to produce flashback. It is found that depending on the combination of primary swirl flow and amount of axial air injection, the flow can exhibit self-excited oscillations, and more importantly, it can control the flashback safety. Numerical simulations are used here to investigate different combinations of axial air injection and evaluate its impact on flame stability and flashback resistance. It is found that the axial air injection influences the flame stabilization and the position of the central recirculation zone. The penetration of the flame in the mixing tube introduces a strong expansion and acceleration of the flow, which results in a reduction of the spreading angle and eventually a flashback event.

https://upcommons.upc.edu/bitstream/2117/375727/1/GPPS-TC-2022_paper_76.pdf

Daniel Mira

Papers

Influence of axial air injection on the flame stability of a technically premixed hydrogen flame