Numerical investigation on the effect of g-load on high-g ultra-compact combustor

Yan, Peiliang; Fan, Weijun; Qi, Shuchan; Zhang, Rongchun; Liu, Jie; Bai, Ning; Zhao, Wensheng; Yang, Xiaohu

doi:10.1016/j.ast.2021.107305

Cited by 10 publications

(4 citation statements)

References 32 publications

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“…Additionally, pesticides can indirectly affect soil microbiomes by altering plant communities and reducing the diversity of organic inputs to the soil [113]. Urbanization, another major form of land-use change, can also have significant impacts on soil microbial communities [115]. Urban soils are often characterized by high levels of disturbance, compaction, and contamination, which can create stressful conditions for microbes [116].…”

Section: Land-use Intensification and Soil Biodiversity Lossmentioning

confidence: 99%

Unraveling the Complex Dynamics of Soil Microbiome Diversity and Its Implications for Ecosystem Functioning: A Comprehensive Review

Singh,

Rai

2024

MRJI

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Soil microbiome diversity plays a pivotal role in shaping terrestrial ecosystems and the myriad functions. This comprehensive review delves into the intricate dynamics of soil microbial communities, exploring their composition, interactions, and responses to environmental factors. By synthesizing findings from cutting-edge research, we aim to elucidate the complex interplay between soil microbiome diversity and ecosystem functioning. We discuss the application of advanced techniques, such as high-throughput sequencing and metagenomic analysis, which have revolutionized our understanding of soil microbial diversity. The review highlights the influence of biotic and abiotic factors, including plant diversity, soil properties, climate, and land-use practices, on the structure and diversity of soil microbial communities. We examine the mechanisms through which soil microbes drive critical ecosystem processes, such as nutrient cycling, carbon sequestration, and plant productivity. The review also explores the resilience and adaptability of soil microbial communities in the face of global change pressures, such as climate change, land-use intensification, and biodiversity loss. We discuss the potential implications of altered soil microbiome diversity for ecosystem functioning and the provision of essential ecosystem services. Furthermore, we identify knowledge gaps and propose future research directions to advance our understanding of soil microbiome diversity and its role in maintaining healthy and productive ecosystems. This review provides a comprehensive framework for understanding the complex dynamics of soil microbiome diversity and underscores its critical importance in shaping the functioning and sustainability of terrestrial ecosystems in a changing world.

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Section: Land-use Intensification and Soil Biodiversity Lossmentioning

confidence: 99%

Unraveling the Complex Dynamics of Soil Microbiome Diversity and Its Implications for Ecosystem Functioning: A Comprehensive Review

Singh,

Rai

2024

MRJI

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“…In addition, the cost of LSB is low. Sulfur elements are abundant in nature, and their cost is relatively low [3].…”

Section: Advantages and Disadvantages Of Lsbmentioning

confidence: 99%

A comparison study between the lithium sulphur battery and fuel cell in new energy vehicle applications

Gan,

Li,

2023

J. Phys.: Conf. Ser.

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In recent years, the development of new energy vehicles has been rapid to solve the emerging energy depletion and carbon emission problems. Lithium-sulfur batteries and fuel batteries have become the most competitive two development directions in the new generation of power batteries for electric vehicle applications. Lithium-sulfur battery has a high specific capacity, low production cost and is environmentally friendly. However, some problems include low coulomb efficiency and short life span in the process of lithium-sulfur battery production. Fuel cells are also environmentally friendly, energy-efficient and drive efficiently. But fuel cells are extremely expensive, and their longevity problems regarding the membranes and electrode materials and supporting infrastructure, such as the hydrogen and oxygen storage obstacles, must also be overcome. This paper focuses on analyzing the two new energy vehicle power resource principles, advantages and disadvantages of two kinds of typical batteries, the current development bottleneck, and respectively put forward suggestions for future development.

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“…The superior combustion performance of high- g technology has motivated many researchers to conduct experiments to verify this phenomenon, − and numerous studies have been conducted to obtain a more detailed flame mechanism through simulations. − Recently, researchers have pointed out that the high- g combustion mechanism is more complex and may be related to the Rayleigh–Taylor instability. − Briones et al reproduced Lewis’s experiments using a two-dimensional computational domain to simulate a rotating combustion tube and found that higher values of g -loading were not better, and at larger values of g -loading, the flame front broke up and disrupted its own mixing with the fuel, which led to localized quenching and slowed down flame propagation. Briones proposed that Rayleigh–Taylor instability affects the localized flow rate of the flame and thus the flame propagation rate.…”

Section: Introductionmentioning

confidence: 99%

Gear-Shaped High-g Combustion Chamber for Micro Turbojet Engine Applications

Huang,

Chen,

long

et al. 2024

ACS Omega

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Enhancing combustion efficiency and optimizing the thrust-toweight ratio are critical technical challenges encountered in the development, application, and growth of micro turbojet engines. The high-centrifugal (high-g) combustion chamber, as an innovative combustion chamber system, has the capability to replace the primary combustion chamber of the traditional turbojet engine, reducing the length of the combustion chamber while maintaining engine performance. Previous studies on the structure of the high-g combustor (HGC) have shown problems such as uneven temperature distribution of the turbojet rotor. To improve the feasibility of HGC integration into micro turbojet engines, this study conducts relevant experiments on a 120 N thrust engine. Subsequently, the results of these experiments were used to analyze the structural design of HGC through a simulation approach. Including six main configurations, the first four structural designs focused on establishing a suitable highly centrifugal environment to stabilize and improve the combustion performance, which was successfully achieved by designing the outer ring gearshaped inlet with four different angles. Subsequent structural designs were based around improving the uniformity of the temperature distribution at the combustion chamber outlet. The final design of the HGC combustion efficiency is not much different from the original combustion chamber, and it can shorten the axial length of the combustion chamber by nearly 30%. The design of the air inlet holes and the baffle plate effectively improves the temperature uniformity at the outlet of the combustion chamber. Moreover, without changing the combustion chamber material, the corresponding engine weight can be reduced by about 10.7%, and the engine thrust-to-weight ratio can be improved by up to 12% with the same thrust, which provides design ideas for further lightweight applications.

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Numerical investigation on the effect of g-load on high-g ultra-compact combustor

Cited by 10 publications

References 32 publications

Unraveling the Complex Dynamics of Soil Microbiome Diversity and Its Implications for Ecosystem Functioning: A Comprehensive Review

Unraveling the Complex Dynamics of Soil Microbiome Diversity and Its Implications for Ecosystem Functioning: A Comprehensive Review

A comparison study between the lithium sulphur battery and fuel cell in new energy vehicle applications

Gear-Shaped High-g Combustion Chamber for Micro Turbojet Engine Applications

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