Fluid Dynamic Loss Model with Wide Applicability for Aeroengine Transmission Gears

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-10-11 DOI:10.1115/1.4063714
Hidenori Arisawa, Mitsuaki Tanaka, Hironori Hashimoto, Tatsuhiko Goi, Takahiko Banno, Hirofumi Akahori
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Abstract

Abstract In high-speed gear systems for aeroengines, it is important to reduce the fluid dynamic loss, which accounts for the majority of power loss, to improve the fuel efficiency. For reasonable loss-reduction and the standardization of low-power-loss designs, a fluid dynamic loss model with wide applicability is needed. However, there are few reports of loss models considering the gear shroud effect on the oil dynamic loss. This study developed a loss model based on fluid dynamic loss phenomena. Specifically, fluid dynamic loss models were developed for the "air side-flow loss," "air pumping loss," "oil-jet acceleration loss," and "oil re-acceleration loss" in the gear meshing part, and "air vortex loss" and "oil churning loss" in the gear peripheral part, with consideration to the shrouding effect. Moreover, an experimental method and a numerical method for loss classification are proposed. The fluid dynamic loss models were validated by experiments or experimentally validated numerical simulations. To demonstrate the effectiveness of the loss model for low-power-loss design, the influence of the design parameters was investigated, and the typical parameters were optimized.
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适用范围广的航空发动机传动齿轮流体动力学损失模型
摘要在航空发动机高速齿轮传动系统中,降低占动力损失大部分的流体动力损失,提高燃油效率是非常重要的。为了合理降低损耗和规范低功耗损耗设计,需要一种适用性广泛的流体动力损耗模型。然而,考虑齿轮盖对油液动态损失影响的损失模型鲜有报道。本研究建立了一种基于流体动力损失现象的损失模型。具体而言,在考虑叶冠效应的情况下,建立了齿轮啮合部分的“空气侧流损失”、“抽气损失”、“油射流加速度损失”和“油再加速度损失”以及齿轮外围部分的“空气涡流损失”和“油搅拌损失”的流体动力学损失模型。此外,还提出了一种试验方法和数值方法进行损失分类。通过实验或数值模拟验证了流体动力损失模型。为了验证损耗模型在低功耗设计中的有效性,研究了设计参数的影响,并对典型参数进行了优化。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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