马六甲香蒲耕地大涡模拟

IF 1.6 3区农林科学 Q2 AGRONOMY

Plant Production Science Pub Date : 2023-10-18 DOI:10.1080/1343943x.2023.2272810

Moe Shiraishi, Hiroaki Hayashi, Hiroaki Shimada, Shin-Ichi Satake

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引用次数: 0

摘要

本研究对马六甲香蒲(Cyperus malaccensis Lam)的honami现象进行了研究。建立了一种模拟技术，可以准确地再现它的波浪，并预测其上方和穿过它的风的流动，这与它的生长有关。分析程序是在大涡模拟(LES)的基础上构建的。LES模型基于非旋转相干结构Smagorinsky模型(NRCSM)，是Smagorinsky模型的扩展。此外，本文还对基于植被运动的一束水稻进行了求解，利用Newmark-beta方法结合LES对田间植被和空气的运动进行了分析。结果，涡旋结构和植被振荡被可视化。我们不仅观察了马六甲叶尖附近的流向涡结构。还有一些特征结构，它们在植被震动的同时沉入植被。因此，我们发现马六甲草的振动。受植物内空气流入的影响。

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Large-eddy simulation of cultivated fields with Cyperus malaccensis Lam

In this study, the honami phenomenon in Cyperus malaccensis Lam. was reproduced to establish a simulation technique that can accurately reproduce the waves of it and predict the wind flow over it and through it, which is related to its growth. The analysis code was constructed on the basis of a large-eddy simulation (LES). The LES model is based on the nonrotating coherent-structure Smagorinsky model (NRCSM), which is an expansion of the Smagorinsky model. In addition, this code is solved for a bundle of reaped rice plants, which are based on the vegetation movement, using the Newmark-beta method with an LES to analyze the movement of vegetation and air in the field. As a result, vortex structures and vegetation oscillations were visualized. We observed not only the streamwise vortex structures near the tips of C. malaccensis Lam. but also characteristic structures that sink into the vegetation simultaneously with vegetation shaking. Consequently, we found that the vibration of C. malaccensis Lam. is influenced by air inflow within the planting.

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来源期刊

Plant Production Science 农林科学-农艺学

CiteScore

5.10

自引率

4.00%

发文量

审稿时长

>36 weeks

期刊介绍： Plant Production Science publishes original research reports on field crops and resource plants, their production and related subjects, covering a wide range of sciences; physiology, biotechnology, morphology, ecology, cropping system, production technology and post harvest management. Studies on plant production with special attention to resource management and the environment are also welcome. Field surveys on cropping or farming system are also accepted. Articles with a background in other research areas such as soil science, meteorology, biometry, product process and plant protection will be accepted as long as they are significantly related to plant production.